Global Mapper v25.0

GM 16.2 displays Palette+Alpha Geotiff as Grayscale

GeoloGIS
GeoloGIS Global Mapper UserTrusted User
edited May 2015 in Bug Report
Trying GM 16.2 64-bit (note that the DL link is now dead)

Something got broken between versions 16.1 and 16.2.
Geotiff files consisting of color palette data + alpha band (metadata reported as "PHOTOMETRIC=Palette-Color" and "BIT_DEPTH=16") now display as grayscale. Still the Raster options > Palette tab correctly lists the color palette.

Please find here a tiny sample file illustrating the bug.

Comments

  • bmg_bob
    bmg_bob Global Mapper Programmer
    edited May 2015
    Hello,

    I recommend that you send a description of your workflow, data, and results to Blue Marble Geographics Support (geohelp@bluemarblegeo.com). This will ensure that the support team knows about the problem, and will expedite a solution. Thank you.

    Cheers,

    Bob
  • GeoloGIS
    GeoloGIS Global Mapper User Trusted User
    edited May 2015
    Thanks. Found a workaround, fix no longer needed.