Add image on top of raster

I'm certain someone can come up with a more complete solution, but look into the following transformers

• BoundsExtractor, to get the coordinate extents of the heat map raster
• RasterGeoreferencer to place the legend somewhere within the heat map
• RasterMosaicker to blend the heat map with the legend. Be sure to set Overlapping Values = Last, and make sure that the legend arrives after the heat map.

@francois_binnem

Hi.

Yes, use a boundsextractor on both the heatmap and the logo. Make sure to name the x,y coordinates differently.

Scale the logo to your liking. Using the extracted bounds. (or eyeball it)

Boundsextract the logo again (as you have scaled it)

Use an affiner to move the logo box to where you want it.

If you write straight to a rastertype you need to sort them (counter and sort),

If you use a Mapnikrasteriser you can have the drawingorder set in that.

The MapnikRasterizer is a great suggestion, it replaces the RasterMosaicker (in my answer) and is a lot more flexible.

Thank you very much for the suggestions, as well as the workbench example. I am trying to implement this in my solution but currently have a huge loss in quality of the wind heat map. It may be due to my setup, so I am still fiddeling with it. I will let you know if I can resolve it or have more questions. Just want to try to figure out what is going wrong right now.

Hi gio and david_r

I managed to figure out what the issue with the quality was. The MapnikRasterizer has a cell spacing property which I have set to 0.001, which resolved that. I also found that I did not require the FeatureMerger transformer. But Gio's example gave the answer I needed. Thanks a lot - appreciated!