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links:gps:jgw_tfw

JGW/TFW

OruxMaps supports tfw, for jgw just rename extension from jgw to tfw. The batch conversion tool has not yet support for tfw/jgw.

If the map is of unsupported datum and/or projection, or you want to use batch tool.

  1. For jpeg-maps: rename the extensions, jpeg to jpg and tfw to jgw, for OziExplorer to be able to find the files, if needed.
  2. jpg maps uses jgw as calibration file, tiff/bmp uses tfw.
  3. Import the converted file(s) as DRG maps in OziExplorer. Ozi will create map-files for each jpg-file.
  4. Convert all maps using OruxMapsDesktop, use projection UTM. To be able to do this in a batch (while so many map tiles are created) do as follow:
    • add “RT 90|RT90Swedish” to the file Ozi2Orux.txt in the OruxMapsDesktop install directory if the map uses RT90 datum.
    • if needed: in all created map-files, change “(SG) Swedish Grid” to “(UTM) Universal Transverse Mercator”, this because the batch converter in OruxMapsDesktop currently do not support Swedish grid.
links/gps/jgw_tfw.txt · Last modified: 2020-11-06 10:37 by 127.0.0.1