Problem with Idrisi mask file

[Jakob Lanstorp]

I am trying to make an IDW interpolation with Gstat using a 16 bit Idrisi raster grid (the *.doc and *.img files) I keep getting this error: gstat: read failed on file `C:\Dev\gstat\gstat-2.3.6\Test3\idrisi16_mask.doc' (mapio.c, line 713)   My command file (gst file) looks like this:   data(data): 'C:\Dev\gstat\gstat-2.3.6\Test3\ut_10.eas', x=1, y=2, v=3; mask: 'C:\Dev\gstat\gstat-2.3.6\Test3\idrisi16_mask'; predictions(data): 'C:\Dev\gstat\gstat-2.3.6\Test2\ut_10_Output'; set idp=2.0; set zero=1.0e-10; set debug=3; set logfile='C:\Dev\gstat\gstat-2.3.6\Test3\ut_10.log';   The Idrisi mask has a data setup as explained in the gstat manual.   The data textfile (ut_10.eas), command file (ut_10.gst), Idrisi mask files (idrisi16_mask.doc and idrisi16_mask.img) and gstat log can all be downloaded from http://www.lanstorp.com/files/testgstat.zip (5kb)   Using surfer as mask file I can run the job just fine. But I am developing with Inovagis using the Idrisi raster format.   Thanks, Jakob Lanstorp