4

I want to create a windmap. So I created a csv with coordinates with values for wind speed and direction, these represent my weather stations. I loaded the csv up in QGIS and marked a station. Then I chose Raster ==> interpolation ==> I chose the value direction and clicked "add". Then I chose the interpolation method Inverse Distance Weighting (IDW) for processing. Now I have a raster for my speed value and I have also processed one for the direction value.

Here is my Question:

Now I want to put a regular points grid over my interpolated rasters but it doesn't shows up? So I go to Vector ==> research tools ==> regular points.

Every time I want to create a regular points grid it proceeds and gives a result wich is an empty "regular points" layer?

I tried to use a layer, as a mask, and also tried it without a mask layer.

There are no errors or obvious failures? I tried it with other rasters and there were no problems at all.

It would be great to get some ideas and help.

3

I found the simple solution.... the failure was the distance (point spacing)... i choosed a scale wich was to wide. So just keep a small distance between the points of your grid and it it will work.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.