jiayuasu commented on code in PR #614: URL: https://github.com/apache/incubator-sedona/pull/614#discussion_r855801004
########## sql/src/main/scala/org/apache/spark/sql/sedona_sql/expressions/raster/Functions.scala: ########## @@ -771,3 +771,45 @@ case class RS_Normalize(inputExpressions: Seq[Expression]) } +/// Append the Normalized Difference between two bands to the image array data as a new band Review Comment: I am kind of confused by this new function. In the current Sedona Raster DataFrame, each individual band is a single column. So if these GeoTiffs have 9 bands, our raster dataframe will have 9 columns. But in your case, it seems that you put all bands in one column? This is different from what the GeoTiff reader does. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
