This dialog box displays when you select a Grid theme in the previous dialog (Create Thematic Map - Step 1 of 3) of the Create Thematic Map wizard.
Select a Table and a Field:
Table
Choose a source table for this thematic map from the list of open tables of the active Map window. All open, mappable tables are listed. If you have created a selection of objects in the map, the option Selection also displays. Using this option allows you to create a thematic map based on the selection you created.
Field
The drop-down list displays all the numeric fields in the table you chose from the Table list (integer, small integer, float or decimal, but not date or character). Choose the field or expression you want to use.
Ignore Zeroes or Blanks
Disabled for Dot Density. Select this check box to ignore zero values and blank values in the table. Because you are creating a thematic map based on one field in a table, any zero or blank values in that field will cause the whole record to be ignored. In the case of grids, points with a zero value are not interpolated if this box is selected.
Grid Options
Select a Table of Boundaries to Clip Against:
Table
Choose a table of regions to clip the grid against. Defaults to none.
Grid File Name
Specify the directory and name of the new grid file that will be created. By default the grid file and accompanied tab is named according to the source table and z-value expression. Also by default, the directory in which these files are placed is the one specified on the PRO tab, by clicking Options, and Directories.
Browse Button
Click this button to display the Choose Directory dialog box. Choose the path you want to save the thematic raster file to.
Navigation Buttons
Back
Choose Back to go back to the previous Thematic dialog box.
Next
Choose Next to go on to Step 3.
Cancel
Cancels the operation and returns you to the map.