PROBLEM

IRasterGeometryProc::Merge produces empty raster output

Last Published: April 25, 2020

Description

When two rasters are merged using the IRasterGeometryProc::Merge functionality, and the result is used as input to another operation, such as creating a raster of slope, the resulting slope raster is filled with NoData values.

Cause

The returned raster object from the IRasterGeometryProc::Merge operation only holds band pointers. This means the pixel values are not written to the output raster. When attempting to use the raster object, it is not yet available, and thus the slope operation attempts to get information from data that is not there.

Solution or Workaround

Do not use the returned output raster object directly. Release the object (set the object to Nothing), reopen the merge result from the persisted file on disk, and continue to use the next operation on the persisted raster object.

    Article ID: 000005345

    Software:
    • ArcMap

    Receive notifications and find solutions for new or common issues

    Get summarized answers and video solutions from our new AI chatbot.

    Download the Esri Support App

    Discover more on this topic

    Esri Community

    Search for related information

    Training

    Find training related to this topic

    ArcGIS Ideas

    Explore ideas and give feedback

    Get help from ArcGIS experts

    Contact technical support

    Download the Esri Support App

    Go to download options