[GRASS-user] creating two new maps from one existing raster

GRASS GRASS user
1

Hi, Janet and all.

can anyone tell me how to make 2 rasters out of my 1 along a user specified
line, or how to successfully digitize this?
thank you,

I wrote a small shell script <r.split.line> for splitting the raster map into parts with the line(s). Hope it will be useful.

./r.split.line -help

Description:
Split raster into parts with vector line(s). Lines MUST intersect the whole raster map.

Keywords:
raster,vector

Usage:
r.split.line raster=name line=name [–verbose] [–quiet]

Flags:
–v Verbose module output
–q Quiet module output

Parameters:
raster Name of input raster map
line Name of vector map with line(s)

The script is attached.

Spearfish example (raster <elevation.10m>) with animation in GIF:
http://img708.imageshack.us/img708/7835/rsplitline.gif

(attachments)

r.split.line.gz (1.47 KB)

2

Hello Alexander,
if You are not willing to make it into GRASS addon, then, please,
submit it to issue tracking system so it doesn't get lost in ML.

Thanks!
Maris.

2012/8/22 Alexander Muriy <amuriy@gmail.com>:

Hi, Janet and all.

can anyone tell me how to make 2 rasters out of my 1 along a user
specified
line, or how to successfully digitize this?
thank you,

I wrote a small shell script <r.split.line> for splitting the raster map
into parts with the line(s). Hope it will be useful.

--------------------------------------------------
./r.split.line -help

Description:
Split raster into parts with vector line(s). Lines MUST intersect the whole
raster map.

Keywords:
raster,vector

Usage:
r.split.line raster=name line=name [--verbose] [--quiet]

Flags:
--v Verbose module output
--q Quiet module output

Parameters:
  raster Name of input raster map
    line Name of vector map with line(s)
---------------------------------------------------

The script is attached.

Spearfish example (raster <elevation.10m>) with animation in GIF:
http://img708.imageshack.us/img708/7835/rsplitline.gif

---------------------------------------------------

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3

Hi Maris and all.

<r.split.line> is already in my github repository (https://raw.github.com/amuriy/GRASS-scripts/master/r.split.line) and on GRASS AddOns wiki page (http://grass.osgeo.org/wiki/GRASS_AddOns#r.split.line).

2012/8/23 Maris Nartiss <maris.gis@gmail.com>

Hello Alexander,
if You are not willing to make it into GRASS addon, then, please,
submit it to issue tracking system so it doesn’t get lost in ML.

Best regards for all GRASS’ers,
Alexander.