r.in.ascii

[Radoslav Bonk]

On Fri, 16 Jan 1998, Houxiang Wang GEO Grad 96 wrote:

> Hi dear GRASS users:
> 
> I am having troubles importing files from idrisi, and hereby securing helps from 
> you.
> 
> I have exported idrisi files using ascii raster format. And then I edited the 
> file (deleting the first two lines of projection and zone, so there are six 
> lines as the header). After ftp them to GRASS, I ran r.in.ascii. Everything 
> looked okay. However, when I tried to display it, it was blank--three or four 
> non-sense colorful lines at the top, and elsewhere was just white. I checked the 
> file under cellhd directory. It reads:
> 	 proj:       1
> 	 zone:       16
> 	 north:      4386270
> 	 south:      4351770
> 	 east:       730110
> 	 west:       686490
> 	 cols:       1454
> 	 rows:       1150
> 	 e-w resol:  30
> 	 n-s resol:  30
> 	 format:     0
> 	 compressed: 1
> 	 
> Actually it is in UTM 16, and it is within the current region. I am not sure of 
> the last sentence. Does it mean that the file is compressed so that GRASS could 
> not process it correctly?
> 
> I also tried to export from idrisi using binary format, which produces two 
> directories--cell and cellhd, each containing one file of the same name. In 
> grass I then ran r.support to get a color table for it. However, this time it 
> was even worse--I couldn't get the file done.
> 
> I am stuck. Could someone give me some hints? Thanks a lot in advance.
> 
> Houxiang
> 
Dear Houxiang
I have never done importing files from IDRISI to GRASS, but when I tried
import *.tif files into GRASS a problem was occured by current mask at my
location. So try to remove a mask from your location by r.mask.
Good luck,
           
Rado Bonk