Reading in .tif using readgeoraster

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Autumn P
Autumn P 2022-3-30
评论： Autumn P 2022-3-30
Hi all,
I am trying to read in a raster DEM in .tif format using readgeoraster and am having some trouble. The code I am using is:
[A,R] = readgeoraster('postSally_breachFill.tif');
A=double(A);
When I look at the values in A and visualize it using :
mapshow(A,R)
There are numerous -99999 or NaN values when the file does not have any NaN values when visualized in ArcGIS (values range from -13 to 12). Is there a reason it is unable to accurately pull in the correct elevation values? I have also tried
[A,R] = readgeoraster('postSally_breachFill.tif','OutputType','double');
Any help to get the accurate values would be appreciated!
I have tried adding in pictures to show the difference. Perhaps it is a resolution issue?
  2 个评论
KSSV
KSSV 2022-3-30
May be ARCGIS replacing those values with zeros.
Autumn P
Autumn P 2022-3-30
Can you elaborate a bit on that? What do you mean? 0 would represent sea level not NaN.

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