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Release history

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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.

 


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 1.2.1

  • 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 1.2.2

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

 


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 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).
 

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