Exporting a raster in ArcMap

The Export Raster Data dialog box in ArcMap allows you to export the entire raster dataset or the portion in the display.

Steps:

1. In the ArcMap table of contents, right-click the raster dataset you want to export, click Data, then click Export Data.

The Export Raster Data dialog box will appear.

2. Choose the appropriate radio button for the extent to use when exporting.
   • The Data Frame (Current) option will export only the portion of the raster dataset that is in the current data frame.
   • The Raster Dataset (Original) option will export the entire extent of the input raster dataset.
   • The Selected Graphics (Clipping) will clip and export the raster dataset based on the selected graphics in the display; this option will retain the data inside the graphic. If you export your data with the Selected Graphics (Clipping) option, your image extent will be the union of your selected graphic and the extent of the raster. Alternatively, you can check the Clip Inside option to remove the data within the graphic and keep the rest of the data.
3. Choose the appropriate radio button for the spatial reference to use when exporting.
   • The Data Frame (Current) option will export the raster dataset using the spatial referencing specifications of the data frame.
   • The Raster Dataset (Original) option will export the raster dataset using the spatial referencing specifications of the raster dataset.
4. Optionally, check the Use Renderer check box if you want to export the raster dataset with the current renderer options. Additionally, check the Force RGB check box if you want to export the output raster as a three-band RGB raster dataset with the current renderer.

   If this exported raster dataset is brought back into ArcGIS, the stretched type should be set to None, since it is already stretched.

5. Optionally, check the Square check box if you want the output raster dataset to have square pixels.
6. Choose the appropriate radio button for the output size of the raster dataset.
   • Click Cell Size (cx, cy) and change the values to adjust the pixel size of the output raster dataset.
   • Click Raster Size (columns, rows) to specify the size of the raster dataset and adjust the values to your specifications.

   The default is to export by using the raster dataset's original cell size.

7. Optionally, specify a NoData value for your output. This is recommended if you are exporting to a file-based raster dataset and graphic clipping is chosen.

   When exporting your data using a selected graphic to a file-based raster dataset, it is recommended that you enter a NoData value. When a graphic is used to clip your data, NoData pixels will most likely exist in the output. Specifying the NoData value will allow you to control the pixel depth and the value that will store NoData. If a NoData value is not specified, the program will find an empty value to use as the NoData placeholder, which may not be desired or expected.

8. Click the Location browse button to navigate to the proper location to save the exported raster dataset.
9. Type the name for the exported raster dataset in the Name text box.

   Geodatabase raster datasets cannot have spaces in the file name.

10. Click the Format drop-down arrow and choose the format in which to save the raster export.

    You will be able to save the export as one of the following types: BIL, BIP, BMP, BSQ, ENVI, GIF, Esri Grid, ERDAS IMAGINE, JPEG, JPEG 2000, PNG, or TIFF. If the output location is a geodatabase, the output type will automatically be the correct geodatabase type.

11. If JPEG or JPEG 2000 format is chosen, then you need to set the compression quality (1 to 100).

    Valid values for compression quality are 1 to 100. This includes situations where you are saving your raster dataset to a JPEG or JPEG 2000 compression within a geodatabase.

12. Click Save.
13. If NoData pixels exist in the output and a NoData value was not specified in the dialog, a dialog box will pop up and prompt you about the output pixel depth. Choose the desired action.
14. When the export is completed, you can choose whether or not to add the exported raster dataset to the display.