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How To: Copy and mosaic rasters into ArcSDE

Summary

Instructions provided describe how to mosaic raster datasets into ArcSDE. There are two steps; adding the raster dataset into ArcSDE and mosaicking the dataset.

There are two methods for adding a raster dataset into ArcSDE; creating a new raster dataset or copying one of the constituent raster datasets. The first method, creating, acts as a place holder. The second method, discussed below, copies an existing raster dataset into ArcSDE first.

Procedure

Follow the steps below to create a mosaic using Copy Raster to copy one of the raster datasets into ArcSDE first. The rest of the datasets are then mosaicked to it. The advantage of this method, over Create Raster, is that little has to be known about the constituent rasters.

  1. Start ArcToolbox.
  2. Start the Copy Raster tool by selecting
    Data Management Tools > Raster > Copy Raster.
  3. Navigate to and select the Input Raster.
  4. Navigate to the ArcSDE location and type the name for the Output Raster Dataset.
  5. Enter parameters for loading the raster:
    - Select a Configuration Keyword, if desired.
    - Use the Ignore Background Value option to remove one background pixel value from the input rasters.
    - Use the NoData Value option to convert any pixels with the specified value to NoData.
    - Check the Convert 1-bit to 8-bit option to allow monochrome (0's and 1's) and to convert to an 8-bit range (0's and 255's). This results in better rendering.
    - Check the Colormap to RGB option to convert a single band pseudocolor image to a multiband RGB composite image.
  6. Select OK.
  7. Start ArcCatalog.
  8. Start the Mosaic tool by right-clicking on the new raster dataset and select Load > Load Data.

    Note:
    This tool is available in ArcToolbox as well. Select Data Management Tools > Raster > Mosaic.

  9. Navigate to and select all of the input rasters, except the raster loaded in Step 2.A.
  10. Enter parameters for loading the rasters:
    - Use the Mosaic Method option to determine the overlapping cell values.
    - Use the Mosaic Colormap Mode option only when working with colormapped (pseudocolor) images and specifying how to combine the colormaps.
    - Use the Ignore Background option to specify what pixel value in the input raster will be removed in the output raster.
    - Use the NoData Value option to convert any pixels with the specified value to NoData.
    - Check the Convert 1-bit to 8-bit option to allow monochrome (0's and 1's) and to convert to an 8-bit range (0's and 255's). This results in better rendering.
    - Use the Mosaic Pixel Tolerance controls for pixel resampling. If the offset between rasters is less than the tolerance, no resampling is done and a shift is performed.
  11. Verify the statistics are calculated and analyze the dataset after the rasters are mosaicked.
  12. Right-click on the raster dataset and select 'Analyze'.
    - Select any applicable checkbox to improve performance.

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