[GRASSLIST:5985] Re: problem with r.in.ascii

[H Bowman]

Problem is, r.in.ascii doesn't take x,y,z as input. It takes blocks of
numbers.

For x,y,z data, use s.in.ascii and s.to.rast and see how it goes.


Alternatively, get good with Matlab/Octave and convert in into the form
r.in.ascii does like:

EXAMPLE (from the man page)
The following is a sample input file to r.in.ascii:

north: 4299000.00
south: 4247000.00
east: 528000.00
west: 500000.00
rows: 10
cols: 15
null: -9999

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15



> Ok - now I revise my question, the output is x,y,z and the grid
> spacing (20x20m) is of lower resolution than the location (1x1m).
> How do I create a raster layer from this data? Does anyone have
> any quick suggestions or scripts to get the data into the right
> format?
> 
> The grid is 500 rows x 500 columbs

[...]

> Here is a sample header from the file
> 
> south: 4179541
> east: 567376
> west: 566376
> rows: 2500
> cols: 3
> 
> 566376.00000 4179541.00000 0.02640
> 566396.00000 4179541.00000 0.02788
> 566416.00000 4179541.00000 0.02962