[GRASS-user] DTM with contour lines and points

GRASS GRASS user
1

Hello all,

I usually use v.surf.rst to build DTM from contour lines. However, this time I have, in addition to the contour lines, a wide range of elevation points.

How can I use isolines and points at the same time to generate the DTM?

I thought a way to get around, which is to convert the contours to equally spaced points and join these points whith the elevation points layer. Is there a more correct and straightforward way to do?

Thank you very much!

Best regards,
Pedro Venâncio

2

Il 20/04/2012 00:51, Pedro Venâncio ha scritto:

I thought a way to get around, which is to convert the contours to equally spaced points and join these points whith the elevation points layer. Is there a more correct and straightforward way to do?

your real data are vertices anyway, so I think extracting them and
patching them with points is the straightforward way.
All the best.

--
Paolo Cavallini
See: http://www.faunalia.it/pc

3

Thank you Paolo!

Best regards!
Pedro

----- Original Message -----
From: Paolo Cavallini

Il 20/04/2012 00:51, Pedro Venâncio ha scritto:

I thought a way to get around, which is to convert the contours to equally spaced points and join these points whith the elevation points layer. Is there a more correct and straightforward way to do?

your real data are vertices anyway, so I think extracting them and
patching them with points is the straightforward way.
All the best.

--
Paolo Cavallini
See: http://www.faunalia.it/pc

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