I have a regular grid of points with wind values with a distance between the points of approx. 300 m. I would like to visualize this and get a TMS (with TileStache) as a regular grid of arrows (direction + strength as size or colour) for every zoom level.
I expect it to look something like this:
Grid of wind arrows
or like this from WXTiles
I tried to get something similar with TileMill but the results are not convincing as you can see on the images:
TileMill and Markers
TileMill and Shields
What would be a way to get a regular grid of arrows in every zoom level? Do I have to prepare a separate file of points for every zoom level with different point intervals? Do you have any suggestions? If possible that would work with TileStache.