I am trying to extract values from my rasters : slope, aspect, landcover etc. for my animals group locations. I used Spatial analyst>Extract multi values to points but when I look in my attribute table after the process the results are the same for all the points and make no sence : e.g. 0 for a landcover, -3x10-38 for a slope etc.
Do you have an idea what I am doing wrong? I am working with ArcGIS 10