[Qgis-user] SAGA Add Grid Value to point

[Lene Fischer]

Hi Victor,
Thanks!
This is great - I have shown my students the mailing list, and in the first mail it gives such a great result.
My students next year have to find another issue  for the mailing list ;-)
Regards
Lene

-----Oprindelig meddelelse-----
Fra: Qgis-user [mailto:qgis-user-bounces at lists.osgeo.org] På vegne af Victor Olaya
Sendt: 8. januar 2016 08:19
Til: Nicolas Cadieux
Cc: qgis-user
Emne: Re: [Qgis-user] SAGA Add Grid Value to point

Lene

SAGA algorithms using several raster layers must use rasters with the same extent and cellsize, so they match. In SAGA terminology, they must use the same grid system

Certain algorithms do not need that (as it is in your case), but that has to be explicitely stated in the algorithm definition. It seems that we forgot to add that in this case.

I have added the AllowUnmatching tag for that algorithm and the Add grid values to shapes as well

It is available in master

Hope this helps.

Cheers!

2016-01-06 15:21 GMT+01:00 Nicolas Cadieux <nicolas.cadieux at archeotec.ca>:
> Hi,
> I do not use Saga for that type of operation as QGIS has an excellent 
> point sampling plugin that you can install.
>
> However, I imagine that you are using Saga via the QGIS processing plugin?
> If so, I recommend you try the tool directly in Saga.  This way, you 
> can have a better idea of the error you are getting and do the trouble 
> shooting there.
>
> It's a good idea to make sure that all layers are in the same CRS 
> before you launch this type of tools especially in "mission critical" 
> situation.  I can check more on my end if you are still stuck.
>
> Nicolas Cadieux M.Sc.
> Les Entreprises Archéotec inc.
> 8548, rue Saint-Denis Montréal H2P 2H2
> Téléphone: 514.381.5112  Fax: 514.381.4995 www.archeotec.ca
>
> On Jan 6, 2016 06:53, "Lene Fischer [via OSGeo.org]" <[hidden email]> wrote:
>
> Hi,
>
> I´m writing this mail on behalf of a student, who encountered a 
> problem today during lecture.
>
> Hope to get help with this issue.
>
> Regards
>
>
>
> Lene Fischer
>
>
>
> Hello
>
>
>
> 1.      I´m trying to use “SAGA - Add grid values to points” in QGIS 2.12.0
> Lyon /Windows 64 bit
>
> 2.      I have opened two raster layers with DSM and DTM
>
> 3.      I have made a new scratch layer where I have digitized 10 points
>
> 4.      In Grid>Multiple selection I choose the 2 layers
>
> 5.      When I press “run” I´m told the input layers do not have the same
> grid extent and stop calculating.
>
> 6.      This problem comes from the two layers that does not have the exact
> same extend
>
> Can any help with this problem
>
>
>
> Regards
>
> Søren Børsting
>
>
>
>
>
>
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