Had the same problem. I first projected the polygon shape (but nothing happened). Then, inside "Advanced Parameters" I changed "Output Data type" to "Int16" and it solved the blank raster problem. In my case the cell values range from 1 to 5, so you'll need to try different Data types if your values are smaller than 0 (or are decimal). Hope this helps a bit.
The layer ring_road is already existing vector layer. If you wish to generate contour, you need to go to geoprocessing menu and there you will find extraction with two options - clip and contour. Select contour, the DEM (Raster, contour of which is to be found). And then you will get Contour from Raster.
![[QGIS] CREATING CONTOUR IN QGIS](http://i.ytimg.com/vi/SBgrKTE7EY8/mqdefault.jpg)
![[QGIS] CREATING CONTOUR IN QGIS](/img/tr.png)
I got such error during conversion from vector to raster:
The following layers were not correctly generated.
Any help?
Did you correctly project the layer?
1. try "fix geometries"- type it in search bar,
2. give the horizontal and vertical resolution values (dont keep zero)
When i try to convert, the raster archive stay in blank, any idea of what happening?
yah! mee too, I also got a blank raster, without any data. please help me, if you sorted this
Had the same problem. I first projected the polygon shape (but nothing happened). Then, inside "Advanced Parameters" I changed "Output Data type" to "Int16" and it solved the blank raster problem.
In my case the cell values range from 1 to 5, so you'll need to try different Data types if your values are smaller than 0 (or are decimal).
Hope this helps a bit.
@@LUMIGOCHA yeah will try this..and will let you know if this works... thank you so much
Thanks for the knowledge
how did you choose number of column and row?
How can you extract from a 2D raster automatically a contour like ring_road layer??
The layer ring_road is already existing vector layer. If you wish to generate contour, you need to go to geoprocessing menu and there you will find extraction with two options - clip and contour. Select contour, the DEM (Raster, contour of which is to be found). And then you will get Contour from Raster.
help me pls !! Contour step3 I'm not understand. T^T