Missing rf_local_biased_add in pyrasterframes

[lepitrust]

I found this function on scala source code, but not working on pyrasterframes...

I need to make data + nodata = data and not data + nodata> = nodata
If understand the code
rf_local_add consider data + nodata = nodata
rf_local_biased_add consider data> + nodata> = data

anyone can help me to do this without this function (maybe masking etc)?

Thanks

[lepitrust]

Up... Anyone know why this feature is not available in pyrasterframes?

https://github.com/locationtech/rasterframes/blob/dc72ece3534a1d8d9a9eebfb1ce4b90e9c3f6ce8/core/src/main/scala/org/locationtech/rasterframes/expressions/localops/BiasedAdd.scala

Thanks

[pomadchin]

Hey @lepitrust mb it just was not registered and than not exposed; I'll be glad to help you with framing a PR in case you want to handle that yourself.

As a workaround you may try to reg this function and use CQL to call it.

mb there was also smth behind it cc @metasim

[lepitrust]

Hi, thanks @pomadchin! Any alternative is welcome ;)
I have a little spark cluster with pyrasterframes correctly working.
I'm trying to use for sum two raster after mul operation. beam and diff are raster tiles, k_b a k_d are float number.

This working, but diff raster contain a lot of NoData which must be ignored in the sum...
The solution can be a biased op... ;)

df_rf_ghi = df_rf_max \ .select(rf_extent(F.col('beam')).alias('new_extent'), rf_crs(F.col('beam')).alias('new_crs'), \ F.col('dims').alias('ghi_dims') rf_local_add(\ rf_local_multiply(F.col('beam'), F.col('k_b')), \ rf_local_multiply(F.col('diff'), F.col('k_d')) \ ).alias('new_raster'))