Sextante: create grid
Arnd Kielhorn
does anyone having experience with the seytante extension for OJ and know what the function Raster creation Tools>constant grid in detail do?
I found nothing about it in the manuals or help dialogs...
Kindly regards
Arnd
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Jukka Rahkonen
This odd page which does not let to select text for copy-paste suggests
that it creates a raster file where all the cells contain the same value.
http://forge.osor.eu/plugins/wiki/index.php?diff=The%20algorithms&id=13&type=g
-Jukka Rahkonen-
Arnd Kielhorn kirjoitti:
Arnd Kielhorn
now I understand...but didn't found the sense of this function.
And the user manuals are poor or missing.
Anyway...I now found a grid creating function under Tools for vector layers>Create graticule. But is not comfortable because the user have to wright down the min and max of the two directions.
Arnd
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Jukka Rahkonen
Have a try with OpenJUMP plugins "PIROL Tools grid toolbox" or "GeoSTAF
Graticule Creator".
gvSIGMac
On 13/09/2011, at 16:32, "Arnd Kielhorn" <a.kie...@gmx.de> wrote:
> Many thanks Jukka,
>
> now I understand...but didn't found the sense of this function.
> And the user manuals are poor or missing.
IMHO It comes handy if you want to divide by say 2 a bunch of raster files, or for 100. Or if you want to assign the same value to a bunch of points. There are other ways to do this kind of things but having a mask of a determined value is one of them.
> Anyway...I now found a grid creating function under Tools for vector layers>Create graticule. But is not comfortable because the user have to wright down the min and max of the two directions.
>
Well, you can copy and paste your values for any other tool including Notebook. Unfortunately you can't add this values pinching a map though.
Michaël Michaud
Don't know if the attached BeanTool can help
Throw it in lib.ext.Beantools folder and click
Customize>Beantools>CreateGrid
It creates a grid made of polygons with a user defined width and height.
The grid completely covers all layers of the project (would be easy to
make a variant covering one layer).
X, Y of the grid origin is a multiple of the grid width and height.
Easy way to learn how to make a beantool using a user input.
Michaël