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<span class="ul-threaded" style="margin: 0.5em 0pt 0pt -20px;"><span class="text-cell">Hi,
<br><br>I've got a problem when I was following a tutorial in Grass wiki
<br><br><a href="http://grass.osgeo.org/wiki/Help_with_3D#Region_settings" target="_top" rel="nofollow" link="external">http://grass.osgeo.org/wiki/Help_with_3D#Region_settings</a><br><br>I
import the 3D volume ASCII file （vox_data50.txt） into Grass. Then I try
to see profiles in NVIZ. I set several constants. But I can only see a
empty 3D box with nothing inside.
<br><br>I successfully followed the example of Slovakia 3D
precipitation. It works well and I can see beautiful profiles.
<br><br>I also manually create some 3D
ASCII files. None of them can be properly displayed in NVIZ. For
example, I import the following 3D ASCII file into grass but failed to see its profiles. I was working with Grass on WinXP SP3.<br><br>Is anyone can tell me what the problem is?<br><br>By the way, when I type g.region rast3d=[name], it always display:<br><b>G3d_readWindow: unable to find [C:/.../PERMANENT/grid3/vox_data50/cellhd].<br>ERROR: Invalid region: North must be larger than South</b><br><br>north: 5
<br>south: 0
<br>east: 5
<br>west: 0
<br>top: 5
<br>bottom: 0
<br>rows: 5
<br>cols: 5
<br>levels: 5
<br>2.5000 3.5000 4.5000 5.5000 6.5000
<br>4.0000 5.0000 6.0000 7.0000 8.0000
<br>6.5000 7.5000 8.5000 9.5000 10.5000
<br>10.0000 11.0000 12.0000 13.0000 14.0000
<br>14.5000 15.5000 16.5000 17.5000 18.5000
<br>5.5000 6.5000 7.5000 8.5000 9.5000
<br>7.0000 8.0000 9.0000 10.0000 11.0000
<br>9.5000 10.5000 11.5000 12.5000 13.5000
<br>13.0000 14.0000 15.0000 16.0000 17.0000
<br>17.5000 18.5000 19.5000 20.5000 21.5000
<br>10.5000 11.5000 12.5000 13.5000 14.5000
<br>12.0000 13.0000 14.0000 15.0000 16.0000
<br>14.5000 15.5000 16.5000 17.5000 18.5000
<br>18.0000 19.0000 20.0000 21.0000 22.0000
<br>22.5000 23.5000 24.5000 25.5000 26.5000
<br>17.5000 18.5000 19.5000 20.5000 21.5000
<br>19.0000 20.0000 21.0000 22.0000 23.0000
<br>21.5000 22.5000 23.5000 24.5000 25.5000
<br>25.0000 26.0000 27.0000 28.0000 29.0000
<br>29.5000 30.5000 31.5000 32.5000 33.5000
<br>26.5000 27.5000 28.5000 29.5000 30.5000
<br>28.0000 29.0000 30.0000 31.0000 32.0000
<br>30.5000 31.5000 32.5000 33.5000 34.5000
<br>34.0000 35.0000 36.0000 37.0000 38.0000
<br>38.5000 39.5000 40.5000 41.5000 42.5000
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