TransLT V1.1 (2010, May)
It was introduced the possibility to draw polygons, paths or points in Google Earth.
The program was adapted for TopoLT, another product of our company, to draw entities from AutoCAD or IntelliCAD in Google Earth.
It was introduced the possibility to reverse columns from tables with input data from the section Universal Transformations.
Lines with information (lines that do not represent coordinates) from coordinates files are ignored in the calculation of tables.
It was introduced the possibility to convert coordinates file with external call from the command line or call from another program.
It was eliminated an error regarding the incorrect saving of coordinates from the table with output data from section Universal Transformations in the case of geographic coordinates.
TransLT V1.2 (2010, June)
It was introduced the possibility to upload or download, through internet, transformation models from the database kept on www.topolt.com. Downloading the models can be also done directly from TransLT Models page.
Files with extension .mtr containing transformation models can be 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 for the oblique stereographic projection are now used when introducing projection parameters. In precedent versions those were introduced under 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 V1.2.1 (2010, June)
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.
When reading information from the EPSG database the following information was added: CRS Scope, Remarks and Information Source.
It was added the possibility to copy the displayed information about one CRS or about an operation with coordinates.
In the Google Earth drawing window was added the possibility to reverse the coordinates from the table.
There was removed an error occuring when reading negative angles of the form -0°00'1.0".
There was removed an error occuring when reading geographic coordinates with sign N,E,S,W from .txt files.
TransLT V1.2.2 (2010, September)
The grid file EGG97_QGRJ.GRD was changed with the file from TransDatRo version 4.01.
TransLT V1.2.3 (2010, October)
It was removed one error that occurred when loading data from TopoLT when the separator character for CSV files was different from the one used in TopoLT.
TransLT V2.0 (2011, January)
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. In relation to the former version it can be currently chosen if the initial and final coordinate systems are 2D or 3D (with or without altitude), in the case of the geographical coordinates or projection plane coordinates.
The generation of transformation models using the EPSG database was revised by considering also 2D coordinate reference systems.
Improvements were made regarding operating in the program tables.
In contextual menu of tables were added the command for loading coordinates from a file and the command for saving coordinates in a file.
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 the Universal Transformations section, elements from the list can be moved using the drag and drop procedure.
The way of presenting 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 the transformation types group.
At Google Earth drawing was introduced the possibility to preview the entity's balloon description.
The information about the Coordinate System (CS) was added when viewing the information about the CRS taken from the EPSG database.
The program was adapted according to the last changes made in the EPSG V7.6 database (November 2010).
Changes referring to projections name:
- Hotine Oblique Mercator becomes Hotine Oblique Mercator (Variant A) – EPSG method code 9812;
- Oblique Mercator becomes Hotine Oblique Mercator (Variant B) – EPSG method code 9815;
- Mercator (1SP) becomes Mercator (1SP) (Variant A) - EPSG method code 9804;
- Mercator (2SP) becomes Mercator (2SP) (Variant B) - EPSG method code 9805;
- Krovak Oblique Conformal Conic (South Orientated) becomes Krovak Oblique Conformal Conic (North Orientated) - EPSG method code 1041.
Added 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 grid files types:
- Grid file of geoidal model type OSGM02;
- Grid file type OSTN02/OSGM02 – EPSG method codes 9633 and 9663.
Corrected error: The Latitude of false origin parameter for projection Polar Stereographic Variant C had not been taken when reading 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 exchanged 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 assuring a centimeter precision for a range of up to ±4° of longitude from the central meridian. Map projections affected by this changing: Transverse Mercator, Transverse Mercator (South Orientated) , Transverse Mercator Zoned Grid System and Universal Transverse Mercator (UTM) .
General
Starting from this version the program uses Unicode characters. Also, the 64-bit version is available which has still a lower calculation precision then the 32-bit version because the 64-bit Windows reserves 64 bites for real numbers (15 - 16 significant numbers) and the 32-bit Windows reserves 80 bites for real numbers (19 - 20 significant numbers).
The section Steps transformations becomes General transformations and the 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 tables has the following commands: save to 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 is retained as unformatted text. When entering the cell for editing the text is displayed unformatted and at exiting from cell it 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.
The 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 the projection "Tunisia Mining Grid" with EPSG method code 9816.
There were added grids used in France with EPSG method codes: 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.
The 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 support 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.
The buttons inside 2D and 3D preview windows disappear when not used and appear again when the mouse goes 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 the 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 (cadaster 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 loss of some transformation models the program issues a warning message when closing the main program window.
The program was translated into french.
External call
It was introduced the option to use the transformation model in direct or reverse direction when converting coordinate files. The option is available only for reversible transformation models. Also for this command are accepted files with multiple transformation models, mtrs extension files.
It was introduced the possibility to convert as well files with entities and then to draw the entities in Google Earth.
To view all program commands available for external accessing, type the following command "TransLT.exe" "/h" in the "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 drawings of entities 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 the 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 sizes, layout and margins, settings used both when saving reports in rtf or html format and when exporting tables in Microsoft Excel or Microsoft Word.
It was introduced the possibility to re-display hidden messages.
In the 3D preview the drawing of continents, borders or hydrography can be selected.
For Google Earth drawings you can choose measurement units for surfaces and distances, setting used by the 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 decimals 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 tables of common points 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) approximate coordinates, at A System page.
Transformation models
The alternate names for the North and East axes for the initial and final system were also introduced in the properties of the transformation model. Here were also introduced buttons to invert the properties of the two systems and to select from the EPSG database the properties of the initial and final system.
The possibility to copy and then insert a model was introduced in the contextual menu of the transformation models list.
Model can be inverted for reversible transformation models.
The model validation test was introduced both in the contextual menu and for the calculation of coordinates using 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, as follows: 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 the 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 a maximum of 10 points calculated with the transformation model.
Coordinate operations
There can be introduced both the name of method and the EPSG code in the properties of coordinates operation. Also, the information about the operation with coordinates from the 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. The information is taken from "_About_grids.mdb" file that is installed in the "Grids" folder. Also here was introduced the possibility to visualize the properties of the selected grid file, including those of sub-grids from the gsb files (Ntv2 format).
The possibility to also introduce formulas for reverse calculation was introduced at Own formulas section as well as other four new functions such as: TanH, ArcSinH, ArcCosH and ArcTanH.
Another calculation mode for offsets 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 method code 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" offsets at filtering when choosing a coordinate operation from the EPSG database.
It was introduced the possibility to filter by the method code too when searching coordinate operations or CRSs in the EPSG database.
The information about source and destination CRSs can be shown in a window at the description of an operation with coordinates from the EPSG database.
When searching the routes between the CRSs from the 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 the EPSG database.
Eliminating calculation error for projections:
- Lambert Conformal Conic (2SP) - EPSG method code 9802;
- Lambert Conformal Conic (2SP) Belgium - EPSG method code 9803.
When creating the transformation models from the EPSG database for the operations that used the EPSG code method 9633 "Ordnance Survey National Transformation" a supplemental operation about the projection given by the projection type CRS was omitted while forming the coordinate operations.
When searching a route through the EPSG database CRSs the intersection of these areas is incorrectly made if the value 180° was in the West to East zone.
It was added two projections: "Lambert Conformal Conic (2SP) Michigan" with EPSG method code 1051 and "Colombia Urban Projection" with EPSG method code 1052.
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.
TransLT V3.1.0.5 (2015, February)
The program was adapted according to the last changes made in the EPSG V8.6 database (2014, November).
The program was adapted according to the last changes made in the EPSG V8.7 database (2015, April).
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 V4.0.0.2 (2018, December)
The EPSG V9.5 database was added (2018, September).
TransLT V4.0.0.11 (2020, February)
The EPSG V9.8.6 database was added (2020, January).
Added the "Equal Earth" projection with the EPSG method code 1078.
Added grid format for NTv2_Vel point motion used in Canada with the EPSG method code 1070.
When creating a coordinate operation in the "Offset by grid file" section, it was added to the type of corrected coordinates (φ,λ,h).
The 3D transformation method "Point motion (Cartesian geocentric)" with the code of the EPSG 1064 method was added.
When selecting coordinate operations from the EPSG database, the parameters "Source CRS code" and "Destination CRS code" were added to the filtering.
When creating the transformation model from the EPSG database, operations with coordinates that have the source CRS identical to the destination CRS can be added. Special case for the coordinate transformations with movement in time, the coordinates remain in the same system.
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 V5.0.0.15 (2020, October)
The EPSG V9.9.1 database was added (2020, August).
TransLT V6.0.0.0 (2020, December)
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 V6.0.0.4 (2021, February)
The possibility to update the program online has been introduced.
TransLT V6.0.0.5 (2021, February)
The EPSG V10.0.15 database was added (2021, February).
A hint message was entered when the file was identified in the list of parameters of the operation with the mouse hover over a text with the name of the grid file. The search is performed in the "Grids" directory on the path where the program is installed or in the directory where the program is installed. The message contains the file found with the full name with the path.
Correction introduced when creating transformation models using the EPSG database in the case of operations with coordinates from a simple CRS to a compound CRS, or vice versa. If the coordinate operation produces a vertical transformation then the additional step from the coordinate operation from the horizontal CRS to the vertical CRS is no longer applied.
The following methods have been introduced for coordinate operations:
- Geog3D to Geog2D+GravityRelatedHeight (BEV AT) - EPSG method code 1089;
- Geog3D to Geog2D+GravityRelatedHeight (CGG 2013) - EPSG method code 1090;
- Geog3D to Geog2D+GravityRelatedHeight (CI) - EPSG method code 1091;
- Geog3D to Geog2D+GravityRelatedHeight (EGM2008) - EPSG method code 1092;
- Geog3D to Geog2D+GravityRelatedHeight (Gravsoft) - EPSG method code 1093;
- Geog3D to Geog2D+GravityRelatedHeight (IGN1997) - EPSG method code 1094;
- Geog3D to Geog2D+GravityRelatedHeight (IGN2009) - EPSG method code 1095;
- Geog3D to Geog2D+GravityRelatedHeight (OSGM15-Ire) - EPSG method code 1096;
- Geog3D to Geog2D+GravityRelatedHeight (OSGM-GB) - EPSG method code 1097;
- Geog3D to Geog2D+GravityRelatedHeight (SA 2010) - EPSG method code 1098;
- Geog3D to Geog2D+GravityRelatedHeight (EGM) - EPSG method code 1103;
- Lambert Conic Conformal (1SP variant B) projection - EPSG method code 1102;
Corrected errors:
- The parameters for the Polar Stereographic (variant C) projection have been corrected;
- When searching for the route between two CRSs in the "Create transformation model using EPSG database" window, an error occurred in some cases due to unsynchronization of the threads.
TransLT V6.0.0.8 (2021, March)
Incorrect display of icons when using the Windows taskbar with hidden label buttons has been removed.
An error that occurred while installing the program on a 32-bit operating system was eliminated.
TransLT V6.0.0.9 (2021, March)
The update service has been improved.
TransLT V6.0.0.10 - V6.0.1.03 (2021, April)
The type of educational licensing has been added.
Minor improvements to the appearance of the windows.
20 new window styles have been introduced.
TransLT V6.0.1.04 (2021, July)
In order to avoid a calculation error related to the convergence of points, the number of iterations for all methods of calculation of transformation parameters was increased.
TransLT V6.0.1.09 - TransLT V6.0.1.10 (2021, September)
It has been added the ability to view a report with all registered licenses for the license key with which the program is activated. You can find the command in the „About TransLT and licensing” window.
The number of window styles has been reduced, only the appropriate styles for CAD programs have been retained.
TransLT V6.0.1.11 (2021, October)
An error was removed from the grid in the EGG97_QGRJ_&_zitaBucx.gsb file that was created using the grids from the EGG97_QGRJ.GRD and zitaBucx.grd files. The NTV2 format does not support worthless nodes, so the north row and the east column, the worthless nodes defined in this grid, have been removed from the zitaBucx.grd grid. Also related to this grid file zitaBucx.grd, the value -9999.0 is now accepted as a valueless node.
The flicker of some windows that appeared when they were opened when the style of the window was dark was eliminated.
EPSG database V10.0.37 (2021, October) has been added.
TransLT V6.0.1.13 - V6.0.1.18 (2021, October - December)
An error synchronizing threads with VCL components has been eliminated.
The flickering of dark windows on their opening has been eliminated.
EPSG database V10.0.39 (2021, November) has been added.
TransLT V14.0.0.9 - V14.0.0.11 (2022, February)
This version was made using the latest versions of integrated development environments used by our company to develop software applications.
The design of the icons has been changed to fit the dark or light background.
The upgrade service has been improved.
When viewing CRS or CooOp information, the ability to view coordinate operation method information has been added.
The upgrade service has been improved.
EPSG V10.0.54 database (February 2022) has been added.
The grids used in Romania according to TransDatRO V4.07 have been updated.
TransLT V14.0.0.12 - V14.0.0.19 (2022, February - 2022, July)
The following methods have been introduced for coordinate operations:
- Geographic3D to GravityRelatedHeight (PL txt) - EPSG method code 1099;
- Geog3D to Geog2D+GravityRelatedHeight (PL txt) - EPSG method code 1100;
- Vertical Offset by Grid Interpolation (PL txt) - EPSG method code 1101;
- Change of Vertical Unit - EPSG method code 1104;
- Zero-tide height to mean-tide height (EVRF2019) - EPSG method code 1107;
- Geographic3D to Depth (Gravsoft) - EPSG method code 1109;
- Geog3D to Geog2D+Depth (Gravsoft) - EPSG method code 1110;
- Transverse Mercator 3D - EPSG method code 1111.
1D and 3D grids with the GUGiK Poland text ascii format have been introduced.
“Windows 11 Modern Dark” style has been added for windows.
The license report is presented in a table.
EPSG database V10.063 (2022, May) has been added.
Activation of educational licenses has been introduced using the online platform education.topolt.com.
During updates when reinstalling, an error has been removed regarding the language in which the program was originally installed.
EPSG database V10.066 (2022, July) has been added.
TransLT V14.0.0.20 - V14.0.0.27 (2022, July - 2022, December)
The libraries for converting RTF files to PDF have been updated to correct the allocation of space to comply with page layout.
The window with information about the program and about licensing has been completed.
The following methods have been introduced for coordinate operations:
- Vertical Offset by Grid Interpolation (NRCan byn) - EPSG method code 1112;
- Vertical Offset by velocity grid (NRCan byn) - EPSG method code 1113;
- Geographic3D Offset by velocity grid (NRCan byn) - EPSG method code 1114;
EPSG database V10.077 (2022, November) has been added.
TransLT V15.0.0.0 - V15.0.0.15 (2022, December - 2023, September)
The following methods have been introduced for coordinate operations:
- Geographic3D to GravityRelatedHeight (ISG) - EPSG method code 1117;
- Geog3D to Geog2D+GravityRelatedHeight (ISG) - EPSG method code 1118;
EPSG database V10.081 (2023, January) has been added.
An error related to the ETaskbarException exception that appeared in the case of some particular settings of the Taskbar in Windows was removed.
A check for updates button has been introduced in the product activation window.
In the program configuration window in the Export in Microsoft Office section, the width scale was added to be able to size the coordinate tables saved in RTF format. Using this setting, font type and text height you can enlarge or reduce the coordinate tables.
Fixed a bug related to product activation.
The way of generating the PC serial number has been changed due to the emergence of special situations in the cases of motherboards without a serial number.
Adaptation for EPSG database V10.083 (March 2023) has been made.
The libraries used to convert files from RTF format to PDF format have been updated.
INI files used by the application are now tested and signaled with a message in cases where these files cannot be read, cannot be overwritten, or if special permissions are required to access the file.
The Romanian grids have been updated.
Adaptation for EPSG database V10.091 (July 2023) has been made.
Adaptation for EPSG database V10.093 (July 2023) has been made.
The following methods have been introduced for coordinate operations:
- Geographic3D to Depth (gtx) - EPSG method code 1121;
- Geog3D to Geog2D+Depth (gtx) - EPSG method code 1122;
TransLT V16.0.0.0 - V16.0.0.11 (2023, October - 2024, April)
Adaptation for EPSG database V11.001 (Decembre 2023) has been made.
The "RTF to PDF Converter" library produced by Sub Systems, Inc. has been updated.
The name of the projection "Azimuthal Equidistant" has been changed to "Azimuthal Equidistant (J.P. Snyder formulas)" to avoid confusion for this projection which can be calculated with the formulas of C.F.F. Karney, according to the EPSG method with code 1125.
TransLT V16.1.0.0 - V16.1.0.12 (2024, April)
Adaptation for EPSG database V11.006 (March 2024) has been made.