This application will create a GML (Geography Mapping Language) file containing drawing instruction for a user defined latitude/longitude graticule (grid). The MAPFILE provides definition of map projection parameters while user input 'Options' define how specific latitude and lines are drawn. The resulting GML file can be viewed by various applications such as QGIS, Snowflake GML Viewer, GAIA, etc. In addition, GML files produced via this program can be manipulated by GDAL utilities for conversion to other usable formats. For example, the "ogr2ogr" utility can produce DXF and ESRI Shape files readable by Adobe Illustrator and Arc applications respectively.

This example shows the qgis display of a sinusoidal projection created by this application. The following mapfile was used in the mapgrid application to create the grid.

Group = Mapping
  ProjectionName     = Sinusoidal
  TargetName         = MARS
  EquatorialRadius   = 3396190.0 <meters>
  PolarRadius        = 3376200.0 <meters>
  LatitudeType       = Planetocentric
  LongitudeDirection = PositiveEast
  LongitudeDomain    = 360
  CenterLongitude    = 180.0
End_Group
End
         

This example shows the qgis display of a lambert conformal projection created by this application. The following mapfile was used in the this application to create the grid.

Group = Mapping
  ProjectionName         = LambertConformal
  TargetName             = MARS
  EquatorialRadius       = 3396190.0 <meters>
  PolarRadius            = 3376200.0 <meters>
  LatitudeType           = Planetocentric
  LongitudeDirection     = PositiveEast
  LongitudeDomain        = 360
  CenterLongitude        = 20.0
  CenterLatitude         = 40.0
  FirstStandardParallel  = 32.0
  SecondStandardParallel = 43.0
End_Group
End