Very long export time for jpg export from gmg files

I am exporting utilizing the following script.  The very long export times come from each empty jpg in the 1 degree by 1 degree minor being created then deleted upon finishing the build.  Essentially I'm building 625 images and then the 233 empty ones are not saved.  However, the empty maps take a very long time to build.  Anything I can do?

EXPORT_RASTER FILENAME="%OUT_FOLDER%\N41W124\N41W124.jpg" \ 

TYPE=JPEG \ 
QUALITY=100 \ 
GEN_WORLD_FILE=YES \ 
GEN_PRJ_FILE=YES \ 
FORCE_SQUARE_PIXELS=YES \ 
FILL_GAPS=NO \ 
SPATIAL_RES=".00001,.00001" \ 
GRID_TYPE_PIXEL_SIZE="4000,4000" \ 
GRID_NAMING=SEQUENTIAL \ 
LAT_LON_BOUNDS="-124.00,41.00,-123.00,42.00" 
SAVE_WORKSPACE FILENAME="\\ad.garmin.com\cartography\Sources\Marine\Hi-Res_Relief_Shading_Sources\v2020.0\JPG_Images\N41W124.gmw" 

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Answers

  • Ice Age MarkIce Age Mark Global Mapper User Posts: 299Trusted User
    Hello,

    Do you really want SPATIAL_RES=".00001,.00001"?  I believe the units for this are in Meters, and this is extremely small, especially for a 1 x 1 degree area.  That would make exports take a very long time to complete.  1 meter resolution data is the best I have seen for your region of interest.

    Good luck,

    Mark
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