<br><font size=2 face="sans-serif">Hi,</font>
<br>
<br><font size=2 face="sans-serif">I'm using GRASS 6.0 and - I'm trying
to pan-sharpen a Landsat 7 ETM image. I've imported bands 1, 2, 3 and 8
(panchromatic band) into GRASS (they were originally in GeoTIFF format).
I've set the correct projection, and each of the bands I import display
in the proper location in the display window. So, now I can complete the
pan-sharpening by the following steps:</font>
<br>
<br><font size=2 face="sans-serif">Apply a contrast stretch</font>
<br>
<br><font size=2 face="sans-serif">g.region res=25</font>
<br><font size=2 face="sans-serif">r.colors tm.1 color=grey.eq</font>
<br><font size=2 face="sans-serif">r.colors tm.2 color=grey.eq</font>
<br><font size=2 face="sans-serif">r.colors tm.3 color=grey.eq</font>
<br>
<br><font size=2 face="sans-serif">RGB view of RGB channels:</font>
<br>
<br><font size=2 face="sans-serif">d.rgb r=tm.3 g=tm.2 b=tm.1</font>
<br>
<br><font size=2 face="sans-serif">That works perfectly up to here. Then,
in the next step I have some problems...</font>
<br>
<br><font size=2 face="sans-serif">RGB to IHS transformation:</font>
<br>
<br><font size=2 face="sans-serif">g.region res=12.5</font>
<br><font size=2 face="sans-serif">i.rgb.his red_input=tm.3 green_input=tm.2
blue_input=tm.1 hue_output=hue intensity_output=int saturation_output=sat</font>
<br>
<br><font size=2 face="sans-serif">When I run this command, GRASS just
sits there and does not process, but yet there is no error message...</font>
<br>
<br><font size=2 face="sans-serif">Please, is there a patch or another
command to fix this? Am I doing something wrong? Should I install a different
version of GRASS?</font>
<br>
<br><font size=2 face="sans-serif">If anyone knows the answer please, please
let me know!!</font>
<br>
<br><font size=2 face="sans-serif">Thank-you,</font>
<br>
<br><font size=2 face="sans-serif">Nat</font>
<br>
<br>
<br>