[GRASS-user] Piping Commands

[Pablo Carreira]

Hi, Javier!

Let me explain:
I have a very large vector of rivers, with many CATs. Here in Brazil we have a law that say that, in general, a 30m area aside of rivers should be preserved with trees.
Them I look in a high resolution orbital image and where I find a portion river without trees I v.extract that portion of river, v.buffer 30m, v.patch that buffer to larger common vector of buffers, g.remove the buffer and the extracted vector.

It is not a batch process, but I think it could be indeed scripted, and I would apreciate some help with that.

Anyway, I still want to discover is if it is possible to pipe grass commands, I don't know much of programing but if I'm not wrong piping mean that the output of an application becomes the input of another application.

Achim told me not to pipe, but I am a obstinate kind of person (I think most of us are)...

ops, I almost forgot, in the company I use windows (becouse I can't use linux there), but at home I use Ubuntu linux.

Regards

Pablo Torres Carreira




From: fjgarciaprieto at hotmail.com
To: pablotcarreira at hotmail.com
Subject: RE: [GRASS-user] Piping Commands
Date: Mon, 23 Nov 2009 19:28:29 +0000








Hi, I'm not an expert or anything else, but maybe I can help you.

You are using Windows or Linux?

Sometime ago I have to upload a large number of images (Ortophotos) to grass (more than the command aloud me and I use a Linux script to do that performed over the basis of processing each group of files and then perform another operations on the result.

Is this what are you looking for?

From: pablotcarreira at hotmail.com
To: grass-user at lists.osgeo.org
Date: Mon, 23 Nov 2009 12:56:46 -0200
Subject: [GRASS-user] Piping Commands









Hi, 

I want to do the following:
v.extract some lines from a vector and them
v.buffer those lines

How do I pipe these commands?





Pablo Torres Carreira


 		 	   		  
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