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Create a multidimensional mosaic dataset from a set of time series images

This workflow demonstrates how to use imagery in a time series to create a multidimensional mosaic dataset.

Multidimensional mosaic dataset requirements

A multidimensional mosaic dataset must contain three fields:

  • A string field named Variable
  • A string field named Dimensions, which stores the comma-separated dimension names
  • One or more fields that define the dimensions

If your mosaic dataset has those three prerequisites, you can make a multidimensional mosaic dataset from a set of time series images.

Add the three fields, populate the values, then synchronize the mosaic dataset with the aggregating information option. For example, a set of TIFF images with the following file names WinterTemperature_2001_12.tif; WinterTemperature_2002_12.tif; WinterTemperature_2013_12.tif. You can deduce the variable and dimension information from the file names, as these will be the values in the mosaic dataset's Name field.

  1. Create a mosaic dataset using the Create Mosaic Dataset tool.
  2. Use the Add Rasters to Mosaic Dataset tool to add the time series data to the mosaic dataset using the Raster Dataset raster type.
  3. Add the mosaic dataset to the Map view or the Contents pane.
  4. In the Contents pane, right-click the Footprint sublayer, and click Open Attribute Table.
  5. Add a Field named Variable with a Type of text and a size of 20.
  6. Add a Field named Dimensions with a Type of text and a size of 10.
  7. Add a Field named StdTime with a Type of date.
  8. Save the changes and close the Field tab.
  9. Calculate the Variable field with the Python syntax Variable = !Name![0:17].
  10. Calculate the Dimension field with the string value Dimensions = “StdTime”.
  11. Calculate the StdTime field with the Python syntax StdTime = getDate( !Name!), where the function getDate is defined in the code block as:

    def getDate(name):
    year = name[18:22]
    month = name[23:25]
    return time.strftime("/".join(["1", month, year]))

  12. Open the Synchronize Mosaic Dataset tool.
    1. Uncheck the Update Existing Item checkbox.
    2. Check the Refresh Aggregate Information checkbox.
    3. Click Run to run the tool.

The mosaic dataset, as a capability, can be viewed as a container for raster data. It contains and manages complex datasets and their metadata, and can be time-enabled.

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