Update Data

Feature Description

Replaces the corresponding parts of a target raster dataset with the content from one or more raster datasets.

The following diagram demonstrates a batch update operation: The left image shows the target dataset to be updated, the middle shows multiple raster datasets used for updating corresponding areas, and the right displays the result after updating.

Data used for updating raster datasets must meet these requirements:

  • The pixel format must be consistent between the target dataset and update datasets;
  • The extents of both raster datasets must overlap. Only overlapping areas will have their values replaced in the target dataset.

Feature Entry

  • Data Tab->Data Processing->Raster->Update Data.
  • Toolbox->Data Processing->Raster->Update Data.

Parameter Description

  • Datasource: Specifies the datasource containing the target dataset.
  • Dataset: Specifies the target dataset.
  • Source Dataset: The data source section includes toolbar buttons and a list box.
    • Use toolbar buttons to add, remove, select, and reorder source datasets.
    • The list box displays one or more raster image datasets used for updating the target dataset. Updates are applied sequentially from bottom to top in the list.
Notes:
  • When updating image data with source datasets using DCT encode type, blurred edges may occur due to lossy compression altering boundary values. For encode type details, see Dataset Compression Encode Type. Avoid using DCT-encoded images for updates to prevent edge artifacts.

Related Topics

Image Composite

Raster Resampling

Raster Reclassifying

Raster Mosaic

Raster Aggregation

Raster Splice

Extract Outline