I'm trying to get elevation data for various parts of the globe, using https://elevation.arcgis.com/arcgis/rest/services/WorldElevation/Terrain/ImageServer/exportImage. I've figured out how to grab the areas I want, at the resolution I want, and save the images, but I'm at a loss as to how to interpret the pixel values. With a pixel format of "F32", there ought to be enough values to represent everything from the shores of the Dead Sea to the peak of Everest, but the downloaded image is effectively grayscale (R=G=B) thereby constraining the range to only 256 values. (I've attached an elevation map of southern part of the Himalayas to illustrate the point.)
Am I missing some parameter(s)? I'm currently supplying token, f, bbox, bboxSR, imageSR, adjustAspectRatio, format, size, pixelType, noData
Is there some other REST endpoint I should be calling to get the data I need?
Thanks
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