Golden Software Blanking .BLN Export Options Dialog
The Export Options dialog allows you to specify options which determine how information in the file is exported.
When exporting, the application specifies coordinates in Page Units (inches or centimeters) as indicated on the document rulers. You may want these values offset and/or scaled back to original map coordinates in the Golden Software Blanking .BLN file.
Attributes
The first ID attribute for all polyline, polygon, and symbol objects are automatically exported to all .BLN files. For contour maps, the elevation is exported as the "STD_ID1" attribute for all polylines in the contour map. If a different attribute other than the first listed attribute for objects is desired, rename the desired attribute to "STD_ID1". This named attribute will be used instead of the first attribute listed on the Info tab. The color, size, symbol shape, width, and other properties are not exported.
BLN Options Page
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Specify the BLN export options in the Export Options dialog. |
Break Apart Compound Areas
Choose Break apart compound areas to have compound areas (those containing islands or lakes) output as separate area entities. This option should be chosen if the .BLN file is to be used as a boundary file. Do not choose this option if the .BLN file is to be used as a blanking file.
Write Z (elevation) column
Choose Write Z (elevation) column to export the .BLN file with the Z values. If ZLEVEL values are not available for the object, 0 will be written in the Z column.
NoData Areas
Select whether to assign NoData values to areas Inside, Outside, or Use BLN_Flag attributes from application (if available). Selecting Inside writes the blanking flag as 1 in the .BLN file. Selecting Outside writes the blanking flag as 0 in the .BLN file. Selecting Use BLN_Flag attributes from application (if available) sets the blanking flag for each object to its BLN_Flag attribute value.
The blanking flag can be overridden in the Assign NoData to Grid dialog. However, the default option is to use the blanking flag from the BLN file to define the NoData direction.
Defaults
The Defaults button sets all options to default conditions.
Scaling Page
See the Scaling Page for detailed information.