I am a beginner in ArcGIS, and I am using ArcGIS 9.2.
I uploaded a raster data, registered it and set the datum as WGS_84. For digitizing some points over this data I have also created a shapefile with the data fixed as WGS_84, but while digitizing it is warning me that the co-ordinate system are not same, that may be causing an error.
Please solve me this problem
Mapping Center Answer:
When you first added the raster image to ArcMap and registered it -- how did you do that? Did you add another file to the ArcMap session that you knew was in WGS_84 and then register the raster image to that? If so, then double check that the file you used to register the raster image really is in WGS_84.
If instead you added the raster image to ArcMap and used the Define Projection tool to simply define the raster as WGS_84, then you missed the step of registering the image to a file with the known WGS_84 projection. Simply defining it as WGS_84 does not actually make it WGS_84 if it really was not in the projection to start with.
Therefore, you need to check two things: 1) that the image you registered REALLY is in WGS_84 and 2) that the shapefile you want to create is defined to have the WGS_84 projection. If you take care of this and still have the problem, please get back in touch with us and we will try to help you further.
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