[Qgis-user] How do display xyz data as shaded raster?

[Matt Boyd]

Hi fellow qgis-users,
I'm sure there is a way to do this but I can't figure it out, it's
been bugging me for some time.
I've got a text/ascii file with xyz data exported from another
application. It's basically the cooords of a point and the depth to
each point, it's been gridded and the points are in a grid.
I can get the points to load and display as dots/symbols and I can
even shade them according to value but ideally I want it to display as
a continuous image and I can't find a way to do this in qgis.
I'd also like to be able to do this with the data from the SRTM plugin.

Thanks
Matt

[Saber Razmjooei]

You can use GRASS plugin and r.in.xyz module.
Cheers
Saber

Post by Matt Boyd
Hi fellow qgis-users,
I'm sure there is a way to do this but I can't figure it out, it's
been bugging me for some time.
I've got a text/ascii file with xyz data exported from another
application. It's basically the cooords of a point and the depth to
each point, it's been gridded and the points are in a grid.
I can get the points to load and display as dots/symbols and I can
even shade them according to value but ideally I want it to display as
a continuous image and I can't find a way to do this in qgis.
I'd also like to be able to do this with the data from the SRTM plugin.
Thanks
Matt
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[zehari zehari]

you can use INTERPOLATION in QGIS.

cheers,

zehari

Post by Saber Razmjooei
You can use GRASS plugin and r.in.xyz module.
Cheers
Saber

Post by Matt Boyd
Hi fellow qgis-users,
I'm sure there is a way to do this but I can't figure it out, it's
been bugging me for some time.
I've got a text/ascii file with xyz data exported from another
application. It's basically the cooords of a point and the depth to
each point, it's been gridded and the points are in a grid.
I can get the points to load and display as dots/symbols and I can
even shade them according to value but ideally I want it to display as
a continuous image and I can't find a way to do this in qgis.
I'd also like to be able to do this with the data from the SRTM plugin.
Thanks
Matt
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http://lists.osgeo.org/mailman/listinfo/qgis-user

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[F. Patrick Graz]

Hi Matt,
I go along with Sabre. Also, once you have a grid you can use a
hillshade to display your data - though usually used for terrain
analysis. This makes it easier to see actual features in your landscape
(or 'depth-scape' in your case :-) )

Patrick