RasterCalculator
hgleixner
Global Mapper UserTrusted User
Mike,
as far as I see I am not able to use the raster calculator - even using small test formulas as
B1=B1-3
B2=B2-3
B3=B3-3
B4=B4-3
See the attachments! (And change *.txt back into *.gm_formula)
In case of a three band RGB image (3*8bit) with palettes I succeeded, but not using 4 bands and 16 bit each.
Any idea?
Henry
as far as I see I am not able to use the raster calculator - even using small test formulas as
B1=B1-3
B2=B2-3
B3=B3-3
B4=B4-3
See the attachments! (And change *.txt back into *.gm_formula)
In case of a three band RGB image (3*8bit) with palettes I succeeded, but not using 4 bands and 16 bit each.
Any idea?
Henry
Comments
-
It worked perfectly for me of a 24-bit RGB input. Can you provide a sample of your input?
Thanks,
Mike
Global Mapper Guru
geohelp@bluemarblegeo.com
Blue Marble Geographics for Coordinate Conversion, Image Reprojection and Vector Translation -
Mike,
"upload failed" - several times: *.zip instead of *.tif, instead of *.xyz, instead of *.txt (8 MB)
I'm giving up.
Henry -
Henry,
You can email to geohelp@bluemarblegeo.com if it's just 8MB. Also I see you are going to calculated 16-bit per channel settings. What do you have set on the Color/Contrast Adjustment tab of the Options dialog for the created layer? You would likely need some kind of contrast stretch to view 16-bit per channel data in a useful manner.
Thanks,
Mike
Global Mapper Guru
geohelp@bluemarblegeo.com
Blue Marble Geographics for Coordinate Conversion, Image Reprojection and Vector Translation -
Henry,
I received your file. There certainly was an issue! No calculated images with more than 8 bits per channel would display right if the calculated values were greater than 255. I've fixed this now. I have placed a new build at http://www.bluemarblegeo.com/downloads/global-mapper/global_mapper15.zip with the latest changes for you to try. Simply download that file and extract the contents into your existing v15.xx installation folder to give it a try. If you are using the 64-bit v15 version there is a new build at http://www.bluemarblegeo.com/downloads/global-mapper/global_mapper15_64bit.zip .
Thanks,
Mike
Global Mapper Guru
geohelp@bluemarblegeo.com
Blue Marble Geographics for Coordinate Conversion, Image Reprojection and Vector Translation
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