Global Mapper v26.0

4 channel TIF export not possible with MapCatalogues

STH
STH Global Mapper UserTrusted User
edited June 2010 in Bug Report
When I load a couple of 4 channel TIFs as usual and then Export Raster - GeoTiff - Crop to Selected Areas it gives a popup to select which bands can be used for which bands (Band 1, Band 2... Band 4) - You can choose between Band 1 and Band 4.

However when puttin the same files in a MapCatalogue and doing the export the I can also choose 4 bands, however the input-values can only be chosen from channels 1 to 3 (see screenshot).


I guess 4 channels are not supported when using a MapCatalogue? It would be nice to add this, because loading 2000 TIF-files with no overviews takes some time even on a large computer.

I also wonder if it is possible to do this in a GlobalMapper-script - however i have not been able to do this - I guess it is the same problem, it is not possible to use a MapCatalogue as an input to the 4 channel TIF-output there either?

(I guess this post could also be placed in the request-category, however if I put it here since I am hoping for a quick-fix)

Comments

  • global_mapper
    global_mapper Administrator
    edited June 2010
    The problem is that map catalogs don't necessarily have a consistent set of band structures in the contained files, so there is not support for configuring the band layout of tiles within a map catalog. For now you will need to load the files separately if you need to alter the band layout.

    Thanks,

    Mike
    Global Mapper Support
    support@globalmapper.com

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