Hi Mo, This issue is only about adding support for the raster UDT in the current geotiff writer.
I also proposed https://issues.apache.org/jira/browse/SEDONA-268 which could be used to implement support for many different kinds of raster formats. Br Martin Andersson Den tors 23 mars 2023 kl 14:57 skrev Mo Sarwat <mosar...@apache.org>: > Hi Martin, > > Thanks for proposing this feature. Will the writer generate cloud-optimized > GeoTiFF. I am asking because Cogs are becoming industry standards for > storing raster in object stores. > > -Mo > > On Thu, Mar 23, 2023 at 6:53 AM Martin Andersson (Jira) <j...@apache.org> > wrote: > > > Martin Andersson created SEDONA-268: > > --------------------------------------- > > > > Summary: Add support for raster types in Geotiff writer > > Key: SEDONA-268 > > URL: https://issues.apache.org/jira/browse/SEDONA-268 > > Project: Apache Sedona > > Issue Type: Improvement > > Reporter: Martin Andersson > > > > > > As discussed in: [ > > https://lists.apache.org/thread/kbwqnj7kn9omtpsoyzbn0zsslvd8cm5t] > > > > With the introduction of raster types in SEDONA-251, it is now possible > to > > enhance the existing Geotiff writer to directly support writing Geotiffs > > from rasters. > > > > Currently, the Geotiff writer requires six columns to create Geotiff > > files: origin, geometry, width, height, nBands, and data. However, for > > rasters, only two columns would be necessary: origin and raster. > > > > To achieve this, we propose modifying the Geotiff writer to first attempt > > to use the existing six-column format. If the input DataFrame does not > meet > > the necessary criteria, the writer should instead look for the origin > > column and a column with the raster UDT. > > > > For the origin column we could use the existing configuration parameter > > (fieldOrigin). The raster column could be detected by type. If there are > > several columns of type raster, the writer would throw an exception. For > > DataFrames with several raster columns users would need to select one at > a > > time. Example: > > {code:java} > > df_many_rasters = ... > > df_many_rasters.select("origin","raster1").write... > > df_many_rasters.select("origin","raster2").write... > > {code} > > > > > > > > > > > > > > > > > > > > > > -- > > This message was sent by Atlassian Jira > > (v8.20.10#820010) > > >
