Version history

TopoLT

TopoLT 13

Errors fixed:

  • A communication error on the serial port has been removed.

Improvements:

  • Adaptation for AutoCAD 2021.
  • Adaptation for ZwCAD 2021.
  • Adaptation for BricsCAD V21.
  • The TransLT V6 library has been introduced.
  • The possibility to search and replace texts has been introduced in the tables. Coordinate tables can also be saved in PDF format.
  • When drawing level curves, the possibility to draw the texts of the main curves outside the 3D model was introduced. You can find the setting when configuring the program in the 3D Model Section – Contour Level.
  • A new ChM3D command has been introduced with which you can change the shape of the 3D model using lines that force the change of slopes.
  • Functions that use 3D models have been improved.
  • For areas, the setting to draw or not the polyline that frames the text in the Areas Section – Labels has been introduced.
  • Minor fixes related to display in TopoLT windows.
  • This version was made using the latest versions of integrated development environments used by our company to develop software applications.
  • The tables marked the current row and the cell in the table header of the current column.
  • For the DimPl and MDimPl polyline sizing commands for some dimension texts that are written at an angle that makes them difficult to read, their rotation has been applied so that they can be easily read.
  • At the HasPl command, the label texts have been removed from being hatched if they exist and are attached to the polyline.
  • The precision for accepting the last polyline was introduced at the MDetas multiple detachment command.
  • The MRefLink command has been introduced to reconnect between polylines (plots) and texts describing plots.
  • A new MIpct command has been introduced for multiple insertion of graphic points.

TopoLT 12

  • Starting with this version, the program works with Unicode characters, and the 64-bit version was also created. Old versions of CAD programs that do not support Unicode format have been removed.
  • Adapting for Windows 10 and for high-definition displays (retina display).
  • It was introduced the possibility to choose the style of the windows.
  • The SensPoly command has been introduced to to change the starting point and the direction of points of some polylines.
  • The TabParc command has been introduced to display the TopoLT land plots in the table.
  • The DxfExp command was introduced to export the drawing in dxf format with the ability to filter entities on the layers.
  • Coordinate tables can be exported to Microsoft Word or Excel.
  • At saving and loading coordinates the XML file format was entered, and the RTF file format for saving the coordinates from the tables.
  • The ProjM3D command can now project POINT entities and TopoLT points on the 3D model.
  • At the ARR command, the table with the analytical calculation of the area is saved in a file with the RTF format, respectively arr.rtf.
  • Adaptation for BricsCAD V20.
  • It was removed an error that occurred when saving the coordinate tables from the calculation window of the polar points (Crad).
  • It was removed an error that occurred at the versions of AutoCAD installed in a language other than English.

TopoLT 11.5

  • Adaptation for the following 32-bit and 64-bit AutoCAD versions: 2016, 2017, 2018, and 2019
  • Adaptation for the following 32-bit and 64-bit BricsCAD versions: V17.2, V18.2, and V19.1
  • Adaptation for the following 32-bit and 64-bit ZWCAD versions: 2019 SP1
  • To transform the coordinates and draw in Google Earth, the TransLT version 4.0 library was introduced.
  • When changing the scale of the plan with the TopoCfg command, selecting entities for scaling is made only once.
  • It was introduced the possibility to cancel the license registration in order to move it to another computer when desired. For special cases, a computer failure, loss, or destruction, the transfer of the license to another computer may be made by a written request stating the reason for the transfer of the license.

TopoLT 11.4

  • Adaptation for BricsCAD V16.2;
  • Adaptation for Windows 10.

TopoLT 11.3

  • Adaptation for ZwCAD+ 2015 SP1;
  • When saving configuration in file now the files associated to configuration are also saved, respectively the files with codes, layers, lines and shape.

TopoLT 11.2

  • Adaptation for ZwCAD+ 2015, BricsCAD V15 and for AutoCAD 2015.

TopoLT 11.1

  •  It was introduced the new TransLT library V3.1 that now supports the time-dependent transformations, supports a new type of grid file, two new projection methods, etc.

TopoLT 11.0

  • Adaptation for ZwCAD+ 2012 and 2014, BricsCAD V14 and for AutoCAD 2014.
  • A new section regarding coordinate transformations was introduced at setup options: Transformations Section.
  • Coordinate transformation does not require anymore TransLT program. Starting with this version TransLT library version 3.0 was introduced. With this library you can transform coordinates using your own transformation models.
  • GEdraw command was changed so that drawing in Google Earth is done directly or the data can be saved to a file.
  • A new command was introduced TrCoo that helps you to transform coordinates of points from drawing, resulting coordinates are saved in a text file.

TopoLT 10.5

  • Adaptation for BricsCAD V13.

TopoLT 10.4

  • Adapted to work on AutoCAD 2013, BricsCAD V12, ProgeCAD 2011, CADian 2011and ZwCAD 2012.
  • When entering the new points in drawing, manually or automatically, you can choose whether to fix or not the number of decimals of points coordinates. In this way you can avoid the small changes of parcels areas made by this fixing.
  • When calculating volume you can choose whether to draw 3D objects as Polygon Mesh or Solid 3D and in the case of 3D Solids objects you can choose whether the bodies unite to create a single 3D Solid.
  • Now the codes that contain “+” character are accepted.
  • When changing points under the new configuration points are drawn without being passed through the tables to keep the number of decimals of the coordinates.

TopoLT 10.3

  • Adapted to work on BricsCAD V11.2.3.
  • Improvements made for working in program’s tables.
  • For polar points calculation command, for all tables was introduced a new column with row’s ID.

TopoLT 10.2.2

  • Fixed one error that occurred while drawing in Google Earth when the separator character for CSV files was different from the one used in the TransLT program.

TopoLT 10.2.1

  • Possibility to choose the attribute for the plan scale used to write the plan scale with NrPlan or DrPln commands.

TopoLT 10.2

  • The files used for configuration are also searched on the path were the program is installed;
  • When using command PUR, if errors occur when calculating polylines areas then through redialing the command errors are avoided. Errors are determined by the way command AREA functions in AutoCAD 2011 in the case of polylines that contain curves that intersect each other.
  • Changing command GEdraw to work properly with TransLT 1.2.

TopoLT 10.1

  • Adapted to work on Windows 64-bit, AutoCAD 2010 and 2011 versions on 64-bit;
  • New command to restore the links of a parcel with its definition texts. In versions made before 9.0 these links are not done;
  • Possibility to draw polygons, paths or points in Google Earth with the assistance of the software TransLT.

TopoLT 10.0:

  • Entities that define the points may be copied or inserted into another drawing without wasting links between entities.
  • The saving and repositioning of georeferentiated images can be done correctly also for images that are not evenly rotated and scaled. TopoLT respects now file format „world” ESRI. If you have images that have been georeferentiated with TopoLT, images that are not evenly rotated and scaled, we recommend to save them once again with this version of TopoLT.
  • You can use „Copy” and „Paste” for an instrument from the list with instruments from Section – Instruments.
  • You can import files with a defined format in instruments section that contain only: Point name, X and Y. In former versions there could be imported only the lines that contained all 5 values such as: Point name, X, Y, Z and Point code.
  • It has been introduced the possibility to scale blocks that are allocated for grid’s crosses.
  • Now the entities that have extruding defined, entities to which have been applied 3D rotations, 3D alignments, etc. are correctly interpreted.
  • A new command was introduced in order to interpolate points on 3D plane.
  • A new command was introduced in order to fix the elevations of point to the elevations of the entities that define points (the block allocated for points).
  • A new command was introduced in order to recalculate polylines areas and change the text labels with the new area.
  • Starting with this version for areas obtained by detachment that will change polylines with one of these commands: AutoPct, FixPct, IPCT, InsVx then the areas will be recalculated and will automatically change the text labels.
  • A new command was introduced Mbr in order to break one or more polylines to a point.
  • It has been introduced the possibility of inverting rows or selection from the table from multiple detachments.
  • It has been introduced the possibility to choose separation character for CSV files.
  • The loading process of program into CAD program (AutoCAD or IntelliCAD) was optimized.

ProfLT

ProfLT 13

  • Adaptation for AutoCAD 2021.
  • When drawing profiles, the option to remove vertical lines and row texts for points that are below a certain distance was introduced. This option is useful for removing overlapping text from areas where the points are too close.
  • When drawing points from a file with the DrawPts command, the ability to search and replace texts in the coordinate table was introduced.
  • This version was made using the latest versions of integrated development environments used by our company to develop software applications.

ProfLT 12

  • Starting with this version, the program works with Unicode characters, and the 64-bit version was also created. Support for old versions of CAD programs that do not support Unicode format has been removed.
  • Adapting for Windows 10 and for high-definition displays (retina display).
  • It was introduced the possibility to choose the style of the windows.
  • Coordinate table can be exported to Microsoft Word or Excel.
  • For gradients, the possibility to choose the unit of measure and the number of decimals was introduced.

ProfLT 11.5

  • Adaptation for the following 32-bit and 64-bit AutoCAD versions: 2016, 2017, 2018, and 2019
  • Adaptation for the following 32-bit and 64-bit BricsCAD versions: V17.2, V18.2, and V19.1
  • Adaptation for the following 32-bit and 64-bit ZwCAD versions: 2019 SP1
  • It was introduced the possibility to cancel the license registration in order to move it to another computer when desired. For special cases, a computer failure, loss, or destruction, the transfer of the license to another computer may be made by a written request stating the reason for the transfer of the license.

ProfLT 11.4

  • Adaptation for BricsCAD V16.2;
  • Adaptation for Windows 10.

ProfLT 11.3

  • Adaptation for ZwCAD+ 2015 SP1;
  • When saving configuration in file now the files associated to configuration are also saved, respectively the files with rows, codes, layers and lines.

ProfLT 11.2

  • Adaptation for ZwCAD+ 2015, BricsCAD V15 and for AutoCAD 2015.

ProfLT 11.0

  • Adaptation for ZwCAD+ 2012, 2014, BricsCAD V14 and for AutoCAD 2014.

ProfLT 10.5

  • Adaptation for BricsCAD V13.

ProfLT 10.4

  • Adaptation for AutoCAD 2013, BricsCAD V12, CADian 2011, ProgeCAD 2011 and ZwCAD 2012.
  • It was introduced the possibility to draw empty rows in the profiles tables.
  • At the additional rows it is possible to choose the way to generate the vertical lines that mark the texts.
  • For the rows with vertically written texts it was introduced the possibility to arrange text to avoid overlapping.
  • It was introduced the CalcDcl command to calculate and draw polyline gradients in row.
  • CalcZ command was improved, now you can choose also points to calculate projected heights, also you can avoid the overlapping of the texts.
  • For rows calculated with CalcZ and CalcDcl commands you can choose at configuration the text height and width.
  • For longitudinal profiles that contain objects it was introduced the possibility to draw or not the elevation and the height of the object and also the elevation of the object bottom.
  • Now the codes that contain “+” character are accepted.
  • It was removed an error that occurs when the points from profile have negative heights which means the profiles are incorrectly drawn.

ProfLT 10.3

  • Adapted to work on BricsCAD V11.2.3.
  • Improvements made for operating in program’s tables.
  • Fixed that occurred at profiles positioning in page when profiles overdrew the available space from page.

ProfLT 10.2.2

  • Fixed one error about incorrect drawing longitudinal profiles with the reference elevation entered by the user.

ProfLT 10.2.1

  • Possibility to choose attributes for length scale and elevation scale for the page title block.
  • Fixed one error which occured in drawing longitudinal profiles when they were divided. For the resulting longitudinal profiles the text settings were not correct.

ProfLT 10.2

  • The files used for configuration are also searched on the path were the program is installed.

ProfLT 10.1

  • Adapted to work on Windows 64 bit, AutoCAD 2010 and 2011 versions on 64 bit.

ProfLT 10.0:

  • Entities that define the profiles may be copied or inserted into another drawing without wasting links between entities.
  • It was introduced the possibility of scaling the distances from profiles in order to eliminate the linear deformation of the map projection.
  • Points are regenerated when changing the plan scale.
  • Now the entities that have extruding defined, entities to which have been applied 3D rotations, 3D alignments, etc. are correctly interpreted.
  • No more lost items tables when there is no assigned file.
  • It has been introduced the possibility to choose separation character for CSV files.

TransLT

TransLT V6.0.0.4

  • The possibility to update the program online has been introduced.

TransLT 6.0.0.0

  • Starting with this version, the license for the TransLT.Win32.dll and TransLT.Win64.dll libraries is granted free of charge, they can be used in any way without any conditioning, users can use these libraries even in commercial applications. The TransLT_SDK.zip file containing the technical documentation as well as some examples of how to implement it in your own applications can be downloaded from www.topolt.com or from the address www.3dspace.ro/download/TransLT_SDK.zip .
  • Starting with this version, the adaptation was made for the new EPSG database with version 10 (October 2020), the EPSG database file used has version 10.008 (December 2020).
  • In lists with information about database items, when hovering the mouse over the fields in the list that contain texts that exceed the allocated space, the hint message box has been enlarged so that the entire text is visible regardless of its length and is displayed in its entirety when it contains two or more lines of text.
  • When reading the angular values, the following texts are now accepted: 44.123456°N, 44.123456N, 23.456789°E, 23E W22.123456, W 22.123456, W,22.123456, N 44 12 34 56.789 or N,44 12 34 56.789.
  • The “Points motion (ellipsoidal)” method has been added to the coordinate operations in the Offset section. This method is time dependent and has the EPSG code 1067.
  • Grid file types added:
    • – Binary grid file format NADCON 5, GEOCON, GEOCON 11 and VERTCON 3.0 with b file extension – EPSG method codes 1074 and 1075;
    • – Deformation model grid file with NZGD2000 format with zip file extension – ESPG method code 1079;
    • – ASCII grid file geoidal model BEV AT format with csv file extension – EPSG method codes 1080 and 1081;
    • – Binary grid file geoidal model GTX format with gtx file extension – ESPG method codes 1084 and 9635;
    • – ASCII grid file geoidal model ASC format with asc file extension – ESPG method code 1085;
    • – ASCII grid file geoidal model DAT format with dat file extension – EPSG method codes 1059 and 1082;
    • – ASCII grid file geoidal model Gravsoft format with gri file extension – ESPG method code 1047;
    • – ASCII grid file geoidal model SURFER format with grd file extension.
  • For grid interpolation, the biquadratic interpolation method has been added.
  • Added transformation methods:
    • – Geographic3D to GravityRelatedHeight (Gravsoft) – EPSG method code 1047;
    • – Point motion (ellipsoidal) – EPSG method code 1067;
    • – NADCON5 (2D) – EPSG method code 1074;
    • – NADCON5 (3D) – EPSG method code 1075;
    • – New Zealand Deformation Model – EPSG method code 1079;
    • – Vertical Offset by Grid Interpolation (BEV AT) – EPSG method code 1080;
    • – Geographic3D to GravityRelatedHeight (BEV AT) – EPSG method code 1081;
    • – Geographic3D to GravityRelatedHeight (SA 2010) – EPSG method code 1082;
    • – Geog3D to Geog2D+Vertical (AUSGeoid v2) – EPSG method code 1083;
    • – Vertical Offset by Grid Interpolation (gtx) – EPSG method code 1084;
    • – Vertical Offset by Grid Interpolation (asc) – EPSG method code 1085;
    • – Geocentric translation by Grid Interpolation (IGN) – EPSG method code 1087;
    • – Geog3D to Geog2D+GravityRelatedHeight (gtx) – EPSG method code 1088.
  • In coordinate operations, for the case of grids defined in geographical coordinates that have a maximum longitude greater than 180°, the points with negative coordinates on the longitude are converted to the range [0°, 360°) to be framed within the grid. After applying the corrections, it returns to the interval in which the longitudes are defined.
  • Minor corrections were made regarding the generation of the text of the names of the coordinate operations and the texts of some error messages were modified.
  • When generating the transformation model from the EPSG database, the search for operations with coordinates between compound CRSs (Horizontal CRS + Vertical CRS) was introduced.
  • Only a few of the NADCON 5, GEOCON, GEOCON 11 and VERTCON 3.0 grids have been added to the installation. If you use these transformations, we recommend that you download the remaining files from https://geodesy.noaa.gov/NCAT/ (“Download” section) and copy the unzipped files to the “Grids” folder on the path where TransLT is installed.
  • For example, several grid files used in South Africa, Austria, Slovakia and Sweden have been added.

TransLT V5.0.0.15

  • The EPSG V9.9.1 database was added (2020, August).

TransLT V5.0.0.0

  • The EPSG V9.8.13 database was added (2020, July).
  • Calculation reports and tables can also be saved in PDF format.
  • Minor fixes related to display in TransLT windows.
  • This version was made using the latest versions of integrated development environments used by our company to develop software applications.

TransLT V4.0.0.0

  • Adaptation for Windows 10 and for high-definition screen (retina display).
  • At program options in the General section, it was introduced the possibility to choose the windows style.
  • You can disable the license to move to another computer and change the user name and company name to a new license registration.
  • Downloading points altitudes by using Google Maps Elevation API services.
  • In the Calculation Parameters section you can calculate with or without steps.
  • At drawing entities in Google Earth it was introduced the possibility to select multiple entities from the list in order to be able to change their properties simultaneously. Here you can also make selections by the type of the entity or by their names.
  • At drawing a polygon in Google Earth now you can draw or not the contour points.
  • It was added to save and load data from files with xml extension (Extensible Markup Language file) for the following types of data:
    • ellipsoids defined in options at section General – Predefined data;
    • entities used at drawing in Google Earth;
    • all types of points with coordinates.
  • At program options in the Units section, the following units of measurement was added:
    • US survey link;
    • Clarke’s foot;
    • Clarke’s yard;
    • Clarke’s link;
    • Clarke’s chain.
  • At program options in the Export to Microsoft Office section, it was introduced the possibility to choose the font and its size when exporting tables to Word or saving to rtf file.
  • In the Own formulas section of coordinate operations, two new functions rtod and dtor have been added to convert angles from radians to decimal degrees and vice versa.
  • The revision date is displayed on the CRS and CooOp informations from the EPSG database. The revision date is also used when coordinate operations are sorted when creating a transformation model by using the EPSG database.
  • When selecting the method from the EPSG database, information about the selected method is also displayed.
  • The program was adapted according to the last changes made in the EPSG V9.3 database (2018, April) and the following transformation methods was introduced:
    • Time-specific Position Vector transform (geocen) – EPSG method code 1065;
    • Time-specific Coordinate Frame rotation (geocen) – EPSG method code 1066;
    • Height Depth Reversal – EPSG method code 1068;
    • Change of Vertical Unit – EPSG method code 1069;
    • Geographic3D to GravityRelatedHeight (PNG) – Cod metodă EPSG 1059;
    • Vertical Offset by Grid Interpolation (NZLVD) – EPSG method code 1071;
    • Geographic3D to GravityRelatedHeight (OSGM15-Ire) – EPSG method code 1072.
  • The following grid file formats have been introduced:
    • geoid model with OSGM15 format (“OSGM15_Belfast.gri”, “OSGM15_Malin.gri”);
    • grid with OSTN15/OSGM15 format (“OSTN15_OSGM15_GB.txt”);
    • geoid model with PNG (Papua New Guinea) format (“PNG08.dat”);
    • geoid model with ISG format (files with “.isg.txt” extension);
    • geoid model with NZLVD (New Zealand) format (files with “.csv” extension);
    • geoid model with Carlson SurvCE GSF format;
    • geoid model with Trimble GGF format.

TransLT V3.1

  • It was introduced two 3D 15-parameter time-dependant transformation methods. The EPSG methods implemented together with these methods are as follows:

– Time-dependent Position Vector tfm (geocentric) – EPSG method code 1053;

– Time-dependent Position Vector tfm (geog2D) – EPSG method code 1054;

– Time-dependent Position Vector tfm (geog3D) – EPSG method code 1055;

– Time-dependent Coordinate Frame rotation (geocen) – EPSG method code 1056;

– Time-dependent Coordinate Frame rotation (geog2D) – EPSG method code 1057;

– Time-dependent Coordinate Frame rotation (geog3D) – EPSG method code 1058.

  • A new grid file type was added, CING11 (Cayman Islands National Grid 2011), with the EPSG 1050 method code.
  • The “Geographic3D to GravityRelatedHeight (CGG2013)” with the method code EPSG 1060 is now accepted.
  • Now the following transformation methods are accepted:

– Geographic3D to GravityRelatedHeight (CGG2013) – EPSG method code 1060;

– Molodensky-Badekas (PV geocentric domain) – EPSG method code 1061;

– Molodensky-Badekas (PV geog3D domain) – EPSG method code 1062;

– Molodensky-Badekas (PV geog2D domain) – EPSG method code 1063.

  • When defining an operation with coordinates, it is now possible to establish if the elevation calculated by it is the final elevation of the transformation model and if in the calculation of the operation with coordinates the elevation is retrieved from the coordinates of the initial system. With these two settings, the model can be used as a two-way calculation: height is calculated on one of the ways and the coordinates from the 2D domain on the other way.
  • The program was adapted according to the last changes made in the EPSG V8.7 database (2015, April).

TransLT V3.0.3

  • It was added two projections: “Lambert Conformal Conic (2SP) Michigan” with EPSG method code 1051 and “Colombia Urban Projection” with EPSG method code 1052.

TransLT 3.0

General

  • Starting from this version the program uses Unicode characters. Also, it is available 64-bit version which has still a lower calculation precision then 32-bit version because 64-bit Windows reserves 64 bites for real numbers (15 – 16 significant numbers) and 32-bit Windows reserves 80 bites for real numbers (19 – 20 significant numbers).
  • Section Steps transformations becomes General transformations and transformation steps of a transformation model are called now coordinate operations.
  • The encoding type: Unicode big endian, Unicode, UTF-8 or ANSI can be chosen for all text files when saving.
  • The contextual menu for all coordinate table has following commands: save in file, add file, load from file, export to Microsoft Excel or Microsoft Word, search text in table, renumber points, autofit and resize.
  • The data introduced in tables are retained as unformatted text. When entering the cell for editing the text is displayed unformatted and at exiting from cell is displayed formatted according to the decimal number set in options. By retaining these unformatted texts in tables coordinate transformations can be made without altering calculation precision for reverse transformations.
  • Button for reverse transformation was added for all sections with coordinate transformations. This button is active only for transformations where this action is possible.
  • Coordinate tables can be edited from both systems in all sections for coordinate calculation: 1D Transformation, 2D Transformation, 3D Transformation and Universal Transformations.
  • It was added projection “Tunisia Mining Grid” with EPSG method code 9816.
  • There were added grids used in France with EPSG methods code: 9644 and 9655.
  • For Ntv2 grid file format (files with extension gab) was also added the type of file that corrects h heights (case AUSGeoid09), EPSG method code 1048.
  • There were added grid files with EGM2008 format, EPSG method code 1025.
  • Button to calculate parameters for reverse transformation was introduced for all boxes with 1D, 2D or 3D transformation parameters. It is active only for transformations that supports this calculation. Still, there are cases where reverse transformation calculation can be applied but the calculation of the parameters for reverse transformation is not possible.
  • Buttons inside 2D Buttons inside 2D and 3D preview windows disappear when are not used and appear again when positioning mouse over them.
  • For 3D preview there were introduced automatic localization and focusing of points displayed.
  • A new functionality regarding quick drawing of a polygon in Google Earth using coordinates from projection system was introduced. This command is useful for individuals that are not specialists in geodesy such as real estate agents, banking officials, land owners and so on and can be used to draw parcels that have coordinates in projection system (cadastre coordinates).
  • In this version you can do modifications for transformation models from all opened windows of the program but saving is made for the last opened window. To avoid the lost of some transformation models program issues a warning message when closing the main program window.
  • The program was translated in French language.

External call

  • It was introduced the option to use transformation model in direct or inverse sense when converting coordinate files. Option is available only for reversible transformation models. Also at this command there are accepted files with multiple transformation models, mtrs extension files.
  • It was introduced the possibility to convert also entities files and then to draw the entities in Google Earth.
  • To view all program commands available at external accessing type the following command “TransLT.exe” “/h” in “Command Prompt” window.
  • Starting from this version two DLL 32-bit and 64-bit libraries were created through which you can do coordinate transformations and entities drawings in Google Earth by implementing them in your programs. More information about using “TransLT.Win32.dll” and “TransLT.Win64.dll” libraries can be found at Using DLL libraries.

Options

  • It was introduced the possibility to select the favorite EPSG coordinate operations.
  • To encode text files you can choose the default value of encoding type.
  • To preview reports about parameters calculation the following formats can be chosen: Plain Text, Rich Text or Web Page.
  • It was introduced the possibility to select page dimension, layout and margins, settings used both at reports saving in rtf or html format and at tables export in Microsoft Excel or Microsoft Word.
  • It was introduced the possibility to review hidden messages.
  • At 3D preview it is choosable the drawing of continents, borders or hydrography.
  • For Google Earth drawings you can choose measurement units for surfaces and distances, setting used by program to determine surfaces and lengths.
  • There were introduced options to export coordinates from tables to Microsoft Office (Excel or Word).
  • Now it is possible to choose the abbreviation for geocentric, geographic or plane coordinate axes.
  • There were introduced buttons to do the loading of default values, saving to file and loading from file.
  • It was introduced the possibility to fix or not the coordinates to the number of decimal when saving them in file.

Parameters calculation

  • There were introduced buttons to jump from a button to another in the order of calculations.
  • 3D transformation points from the table containing common points from A and B system can be viewed 2D, 3D or in Google Earth.
  • For the common points tables you can view now the vectors from system A to B too.
  • Another 3D transformation method, namely Helmert conform transformation with 7 parameters, was introduced at the calculation of (N,E,H) approximative coordinates, at A System page.

Transformation Models

  • The alternative names for North and East axes for the initial and final system were also introduced at transformation model properties. Still here buttons were introduced to invert the properties of the two systems and to select from the EPSG database the initial and final system properties.
  • The possibility to copy and then insert a model was introduced in the contextual menu from transformation models list.
  • Model can be inverted for reversible transformation models.
  • The model validation test was introduced both in contextual menu and at the calculation of coordinates that uses transformation models. The test checks the correctness of coordinate systems stringing through all coordinate operations.
  • The transformations from a system to another, at the transformation test for one point, can be made in four ways, such as: from system A to B and again to B, from A to B, from B to A and from B to A and again to B. In the cases where the test is used forwardly-backwardly too it is also shown the calculated difference between the coordinates from the system from which the transformation started and the coordinates calculated through forward-backward transformation.
  • All the models from the list can be saved in a file. Also, files containing one or more models can be loaded into the list, mtrs extension files.
  • The information whether the model is reversible or not is also shown at the preview of model properties that are loaded from internet database.
  • The obligation to introduce a test point at the publishing of a transformation model in the internet database was eliminated. It was introduced the possibility to add or not maximum 10 points calculated with the transformation model.

Coordinate operations

  • There can be introduced both method name and EPSG code at the properties of coordinates operation. Also, the information about the operation with coordinates from EPSG database can be viewed according to introduced code.
  • It was introduced the possibility to introduce parameters for reverse calculation too at Parameters transformation section for the transformations that are not reversible.
  • It was introduced a list in which is posted the information about the selected grid file at Translation with grid file section. Information is taken from “_About_grids.mdb” file that is installed in “Grids” folder. Also here it was introduced the possibility to visualize the properties of selected grid file, including those of sub-grids from gsb files (Ntv2 format).
  • The possibility to also introduce formulas for reverse calculation was introduced at Own formulas section and another four new functions such as: TanH, ArcSinH, ArcCosH and ArcTanH.
  • Another calculation mode for translations was introduced for coordinate operations. In this new section the following translation methods were introduced:

– Longitude rotation – EPSG method code 9601;

– Vertical Offset – EPSG method code 9616;

– Vertical Offset and Slope – EPSG method codes: 9657 and 1046;

– Geographic 2D offsets – EPSG method code 9619;

– Geographic 2D with Height Offsets – EPSG method code 9618;

– Geographic 3D offsets – EPSG method code 9660;

– Geographic 3D to 2D conversion – EPSG method code 9659;

– Geographic 2D CRS axis order reversal – EPSG method code 9843;

– Geographic 3D CRS axis order change – EPSG method code 9844;

– Change of vertical axis direction;

– Change of horizontal axes directions;

– Change of all axes directions;

– Change of vertical axis unit;

– Change of horizontal axes units;

– Change of all axes units.

Work with EPSG database

  • For code method 1049 “P6 (I = J-90°) Seismic Bin Grid Transformation (Left-handed)” there are taken the parameters for 2D transformations.
  • It was introduced the possibility to select only operations like “General Offsets” translation at filtering when choosing a coordinate operation from EPSG database.
  • It was introduced the possibility to filter by the method code too when searching coordinate operations or CRS-es in EPSG database.
  • The information about source and destination CRS-es can be shown in a window at the description of an operation with coordinates from EPSG database.
  • When searching the routes between the CRS-es from EPSG database if the same coordinate operations are found that have different versions it is taken as initial selected operation the one with the bigger version.

Corrected errors

  • Reading error of some angles expressed in sexagesimal (DMS) from EPSG database.
  • Eliminating calculation error for projections having EPSG method codes:

– Lambert Conformal Conic (2SP) – EPSG method code 9802;

– Lambert Conformal Conic (2SP) Belgium – EPSG method code 9803.

  • When creating the transformation models from EPSG database for the operations that were using EPSG code method 9633 “Ordnance Survey National Transformation” a supplemental operation about the projection given by the projection type CRS was being omitted while forming the coordinate operations.
  • When searching a route through the EPSG database CRS-es the intersection of these areas is incorrectly made if the value 180° exists between West and East zone.

TransLT 2.0

  • Added three more map projections: Krovak Oblique Conformal Conic Modified – EPSG method code 1042; Krovak Oblique Conformal Conic Modified (North Orientated) – EPSG method code 1043; Mercator (2SP) (Variant C) – EPSG method code 1044.
  • Added two more types of GRID files: Grid file of geoidal model type OSGM02; Grid file type OSTN02/OSGM02 – EPSG method codes 9633 and 9663.
  • Changes have been made to the name of some projections.
  • The program was adapted according to the last changes made in EPSG V7.6 database (November 2010).
  • For transformation models from Transformation in steps section, the type of initial and final coordinates was changed. The type of initial and final coordinates can be: Cartesian, Geographic 2D, Geographic 3D, Projection plane 2D or Projection plane 3D. With regards to the former version now you can choose if the initial and final coordinates systems are 2D or 3D (with or without altitude), in the case of the geographical coordinates or projection plane coordinates.
  • Generation of transformation models using EPSG database was revised by considering also 2D coordinates reference systems.
  • In tables contextual menu coordinates loading from file command and coordinates saving in file command were added.
  • The contextual menu of the transformation models list was improved, the model or step characteristics adding and editing commands are, from now on, explicitly shown.
  • In the transformation models list from Transformation in steps section, elements from the list can be moved using mouse drag and drop procedure.
  • The presentation of information about transformation models from Internet loading and downloading windows was changed.
  • All of the contextual menus were translated and icons were added to their commands.
  • In the Parameters calculation section accessing the page and selecting the transformation type can be done with double-click in pages list or in transformation types group.
  • At drawing in Google Earth was introduced the possibility to preview the entity’s balloon description.
  • The information about Coordinates System (CS) was added when viewing the information about CRS taken from EPSG database.
  • When converting files, if the output file is identical to the input file (allocated extension is identical) then output file name is changed by adding to its name (1), (2) or (…) until it is not found a file with this name.
  • To ensure a better precision for the Transverse Mercator map projection, calculation formulas were changed with JHS formulas that can be used for a wider range up to ±40º of longitude from the central meridian. USGS formulas previously used were ensuring a centimeter precision for a range of up to ±4º of longitude from the central meridian. Map projections affected by this change: Transverse Mercator, Transverse Mercator (South Orientated), Transverse Mercator Zoned Grid System and Universal Transverse Mercator (UTM).

TransLT 1.2.3

  • Fixed one error that occurred while loading data from TopoLT when the separator character for CSV files was different from that used in TopoLT.

TransLT 1.2.2

  • Grid file EGG97_QGRJ.GRD was changed with the file from TransDatRo version 4.01.

TransLT 1.2.1

  • It was introduced the possibility to choose the order of geographic coordinates (φ, λ) from tables and files.
  • Transformation accuracy has been added to the model transformation properties and in the database on the Internet.
  • At reading information from the EPSG database were added the following information: CRS Scope, Remarks and Information Source.
  • It was added the possibility to copy the displayed informations about one CRS or about an operation with coordinates.
  • In the Google Earth drawing window was added the opportunity to reverse the coordinates from table.
  • Remove error at reading negative angles of the form -0°00’1.0.
  • Remove error at reading geographic coordinates with sign N,E,S,W from .txt files.

TransLT 1.2

  • It was introduced the possibility to upload or download, through internet, transformation models from the database kept on www.topolt.com. Uploading or downloading the models can be also done directly from TransLT Models page.
  • Files with extension .mtr containing transformation models can de opened directly from Windows Explorer.
  • It was changed the format of files .mtr, files with the precedent format are still accepted.
  • The constant coefficients used at oblique stereographic projection are now used when introducing projection parameters. In precedent versions those were introduced at general options and when using this projection several times with different sets of constant coefficients it was not possible to do the differentiation.
  • Drawings for Google Earth can also be saved in a format compressed with the extension kmz.
  • For graphical entities that are drawn in Google Earth there is possible to introduce additional information (including a link to a web page) that will be posted in the description balloon of the entity from Google Earth.

TransLT 1.1

  • The possibility to draw polygons, paths or points in Google Earth.
  • Program was adapted for TopoLT to draw entities from AutoCAD or IntelliCAD in Google Earth.
  • Lines with information (lines that do not represent coordinates) from coordinates files are ignored in the calculation of tables.
  • Fixed an error regarding the incorrect saving of coordinates from table with output data from section “Transformation in steps” in the case of geographic coordinates.