[GRASS-user] Merge vector

GRASS GRASS user
1

Hello,

I want to merge two vector layers of type point.
The result should contain the latest point by timestamp attribute.

How I can do this?

Thanks

Stefan
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  Stefan Gasser
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  stefan.gasser@r3-gis.com
  
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2

On Thu, Jul 1, 2010 at 12:56 PM, Stefan Gasser <stefan.gasser@r3-gis.com> wrote:

Hello,

I want to merge two vector layers of type point.

For this you can use v.patch.

The result should contain the latest point by timestamp attribute.

This part of the question is not clear to me - what do you mean?
Do you have an example?

Markus

3

From latest point do you mean the ones collected later, let's say

today and not last month.
Well, I'd use a database query for that, probably v.extract...

Daniel

On Mon, Jul 5, 2010 at 4:38 PM, Markus Neteler <neteler@osgeo.org> wrote:

On Thu, Jul 1, 2010 at 12:56 PM, Stefan Gasser <stefan.gasser@r3-gis.com> wrote:

Hello,

I want to merge two vector layers of type point.

For this you can use v.patch.

The result should contain the latest point by timestamp attribute.

This part of the question is not clear to me - what do you mean?
Do you have an example?

Markus
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