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Currently I am working with two data set ASTER and SRTM. I want to check their accuracy with reference to toposheet.

How would I do that in ArcGIS Desktop 10.4?

I want to check accuracy in terms of area and length of my study area.

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  • i am yet to figure out how to compare these two data-set. I want to check weather there is any substantial difference in the derived DEM of the two satellite imagery which I am using Feb 17, 2017 at 7:49
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    What format is your topo data? Raster topo map, topographic vectors (contours, spot elevations, survey controls etc)?
    – user2856
    Feb 17, 2017 at 8:20
  • It is in contour format. Feb 17, 2017 at 14:40

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Digitize manually the polygons on the raster data which you want to compare and do the comparison.

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  • what short of comparison do i need in this case ? Feb 17, 2017 at 7:35

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