Draw from PLY File

Use the option Draw from PLY File, (POLYDRAW GX), from menus Map Tools or Database Tools > Window Data, to draw the polygons from a polygon file on the map.

Draw from PLY File dialog options

Polygon file name (.ply)	The name of the polygon file. Script Parameter: POLYDRAW.FILE
Map view	Map view in which to draw, select from the list. Script Parameter: POLYDRAW.VIEW
Clip to view	Determines if polygon should be clipped to current view or not. Default is ‘Yes’. Script Parameter: POLYDRAW.NOCLIP (0 – Yes, 1 – No)
Draw as polylines	Only draws polylines and do not close open polygons. Default is ‘No’ Script Parameter: POLYDRAW.POLYLINE(1 – Yes, 0 – No)
Draw multiple polygons as single item	Determines if polygon should be clipped to current view or not. Default is ‘Yes’. Script Parameter: POLYDRAW.POLYMULTI (0 – Yes, 1 – No)
Line thickness (mm)	The polygon outline line thickness in mm. Script Parameter: POLYDRAW.LINETHICK
Line colour	Select a line colour from the list. Script Parameter: POLYDRAW.LINECOLO
Fill colour (ignored for polylines)	Select a fill colour from the list. Script Parameter: POLYDRAW.FILLCOLO

Application Notes

Polygons are ASCII files with default extension .ply. A polygon file contains a list of X,Y coordinates that define one or more polygons. The file may contain any number of polygons, and each polygon may have any number of vertices. The first and last points in each polygon are assumed to connect. If the file will contain more than one polygon, each polygon must start with a line 'poly #' ('p' or 'P' in column 1). Comment lines are indicated by a '/' in column 1.

Clip polygon files may also be generated interactively by using the digitising tools in the Map Tools menu.

Example of a single polygon file: