Applying Focal Filter - MapInfo_Pro_Advanced - 2023

To apply a grid filter:

1. On the RASTER tab, in the Operations group, click Raster Operations and then click the Filter button to open the Filter dialog box.
2. Select a continuous/classified raster from the Input File drop-down list.
3. Select Focal Filter from the Select Category drop-down list.
4. Select a filter method from the Select Filter drop-down list.

   The supported focal filter methods are:

   • Minimum
   • Maximum
   • Majority
   • Standard Deviation
5. Enter the number of rows and column for processing. The rows and columns create a neighborhood matrix of cells (or pixels) for processing the cell value.
6. In the Output File box enter the name you want to specify for your output file. Click to browse to the location in your computer to save the output file and select the required output file format.
   1. Click Output Settings to specify the following. The values in Output Settings are controlled by the Raster Preferences dialog; however, you can override those settings here.
      • Display Output File - Select the check-box, if you want to open the output file in the Map window on completion of the operation. You can configure to make this the default behavior from the Raster Preferences dialog.
      • Compression Settings - If the file format to be saved is an MRR or TIFF, the Compression Settings options will appear. The available options are listed below.
        • Data Balanced
        • Data Speed
        • Data Space
        • Advanced

          The Data Balanced allows you to achieve a balance between data speed and space. With the other two options Data Speed and Data Space, you can choose between speed or space. Choose Advanced option to set the advanced compression options such as compression method, level, and encoding type. For details, on Advanced option, see Compression Settings.

      • Compression- Select a suitable compression method and level for the data. For more information on compression, see Compression methods.
      • Encoding Type - Select a suitable Encoding Type for the data from the list. It enables you to compress the data when saving a raster to MRR format. Encoding Type is enabled only when the raster field type is Continuous and the compression method is lossless such as ZIP, LZMA or LZ4. For more information, see Encoding Type.
7. Click Process button to perform the operation.