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Export Mosaic Dataset Items


Saves a copy of processed images within a mosaic dataset to a specified folder and raster file format.

There are two common workflows that use this tool:

  • Export each processed item of a mosaic dataset to a new file. This allows you to have each processed item as its own stand-alone file. Make sure that you set the appropriate NoData value for the exported items so there are no black borders.
  • Export each image within a time series mosaic dataset, based on an area of interest. This allows you to have only the area of interest from each of the time slices.


  • By default, all the items will be exported to the specified folder. You can make a query or selection if you only want to export a subset of the images.

  • The images will be exported with all the processing from the function chains applied. Only the function chains at the item level are applied; function chains at the mosaic dataset level are ignored. This tool does not export the raw source images.


ExportMosaicDatasetItems(in_mosaic_dataset, out_folder, {out_base_name}, {where_clause}, {format}, {nodata_value}, {clip_type}, {template_dataset}, {cell_size})
ParameterExplanationData Type

The mosaic dataset that contains the images you want to save.

Mosaic Layer

The folder where you want to save your images.


A prefix to name each item after it is copied. The prefix will be followed by the Object ID.

If no base name is set, the text in the Name field of the mosaic dataset item will be used.


An SQL expression to save selected images in the mosaic dataset. For more information on SQL syntax, see SQL reference for elements used in query expressions.

SQL Expression

Choose a format for the downloaded raster datasets.

  • TIFFTagged Image File Format. This is the default.
  • BMPMicrosoft Bitmap.
  • Esri BILEsri Band Interleaved by Line.
  • Esri BIPEsri Band Interleaved by Pixel.
  • Esri BSQEsri Band Sequential.
  • GIFGraphic Interchange Format.
  • GRIDEsri Grid.
  • JP2JPEG 2000.
  • JPEGJoint Photographic Experts Group.
  • PNGPortable Network Graphics.
  • CRFCloud Raster Format
  • MRFMeta Raster Format

Set a value for pixels to be considered as NoData.

If you choose to clip your output data, it is recommended that you specify a NoData value.


Limit the extent of your raster dataset before you clip it. If you choose an extent or feature class that covers a larger area than your data, the output will have the larger extent.

  • NONEDo not clip. This is the default.
  • EXTENTSpecify an extent to clip to.
  • FEATURE_CLASSSpecify a feature class to clip to.

Specify a feature class or a bounding box to limit the extent.


Define the spatial resolution by specifying the horizontal (x) and vertical (y) dimensions of the output cells.

If not specified, the spatial resolution of the input will be used.


Derived Output

NameExplanationData Type

The updated output folder.


Code sample

ExportMosaicDatasetItems example 1 (Python window)

This is a Python sample for the ExportMosaicDatasetItems tool.

import arcpy
     "allitems", "", "TIFF", "", "NONE", "", "")
ExportMosaicDatasetItems example 2 (stand-alone script)

This is a Python script sample for the ExportMosaicDatasetItems tool.

#Export Mosaic Dataset items
import arcpy
arcpy.env.workspace = "c:/workspace"
#export mosaic dataset items using feature class as clipping extent
imdname = "exportmditem.gdb/exportmd" 
outfolder = "c:/workspace/outfolder"
basename = "Landsat8"
query = "OBJECTID = 1"
out_format = "TIFF"
nodata_value = "#"
cliptype = "FEATURE_CLASS"
clip_featureclass = "c:/workspace/featureclassdb.gdb/clip_FC"
cell_size = "#"

arcpy.ExportMosaicDatasetItems_management(imdname, outfolder, basename, 
     query, out_format, nodata_value, cliptype, clip_featureclass, cell_size)

Licensing information

  • Basic: No
  • Standard: Yes
  • Advanced: Yes