The RasterExpressionEvaluator supports only 1 or 2 rasters. It would be nice if you could add as many input ports as required. Similarly to how the MapnikRasterizer behaves.
While it is possible to workaround by using a RasterBandCombiner to combine all the rasters into 1, this is not very efficient and can make for complicated expressions.
Open
RasterExpressionEvaluator should support ad hoc rasters ports
+40- Contributor
+26- Enthusiast
This is a great idea. I agree, it would be great to have a "Connect Input" port as in the MapnikRasterizer, InlineQuerier, RCaller, FeatureWriter, and so on.
I was teaching a course this week and one participant asked about this feature. She was expecting the RasterExpressionEvaluator to be the equivalent to the Raster Calculator in ArcGIS, but she was missing that there you can use as many rasters as you want.
Login to the community
No account yet? Create an account
An FME Account is required to contribute
LoginEnter your E-mail address. We'll send you an e-mail with instructions to reset your password.