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Group: |
15) Define Features |
Methodology | |
| Command: | 15.1 |
| Alpha Alias: | Feature Def |
| Description: | Define a feature code for plotting commands |
| Data Format: | 15.1 Feature-Code Layer-Name Line-Color Line-Style Line-Thickness ; |
| Problem: | Given known points and lines defining a right of way and centerline. Define the feature codes necessary to draw the right-of-way lines and centerline using different plotting parameters. |
| Solution: | 15.1 RW RW 1 1 1 ; 15.1 CL CL 3 1 1 ; |
Data Description
| Command | 15.1 | Defines a unique feature code as follows. |
| Feature-Code | RW | Feature code to use for plotting right-of-way lines. |
| Layer-Name | RW | Layer name used in the graphics display and for DXF export. This value is also attached as extended entity data to polylines during DXF export. |
| Line-Color | 1 | Line color using the standard Autodesk AutoCAD 256 color pallette. The line color is exported to DXF. If the color is 0, only points will be drawn and lines will be ignored. |
| Line-Style | 1 | Line style using the graphic control's line styles. The following style numbers are recognized by the graphic control. The scale of the line style is not adjustable at this time. Recommend using line-style 1 for most operations. The line-style is NOT exported to DXF.
1 solid 2 dashed 3 dotted 4 dash_dot 5 short_dash 6 medium_dash 7 long_dash 8 short_dash_X2 9 medium_dash_X2 10 long_dash_X2 11 medium_long_dash 12 medium_dash_short_dash_short_dash 13 long_dash_short_dash 14 long_dash_dot_dot 15 long_dash_dot 16 medium_dash_dot_short_dash_dot 17 sparse_dot |
| Line-Thickness | 1 | Line thickness using the graphic control's line thickness settings. The thickness is set at run time in the graphic control and remains static. The line-thickness is NOT exported to DXF.
The thickness width of 1 corresponds to the logical coordinate system unit of 1. Therefore, to set a thickness equivalent to a number 1 pen for a particular plot scale, use the plot scale * 100 to estimate this value. |
| End Command | ; | All commands end with a semi-colon. |
Example Command File
$ Example data set for the 15.1
$ (FEATURE DEF) command.
$ Set the initial points.
0 1 1000 1000 ;
1 2 1 -1 45 0 0 300
-2 60 0 0 600
-1 60 0 0 300
-2 65 0 0 300 ;
$ Set the points to define the road.
11 60 10 1 2 3 290 0 20 4 0 210 30 5 0 0 ;
$ Setup feature codes with the 15.1 command
$ cmd feature, layer, color, style, thickness
15.1 RW RW 1 1 1 ;
15.1 CL CL 3 1 5000 ;
$ Note: approx thickness for a number 1
$ pen at 50 scale=50*100=5000
$ Turn plot on
91 ;
$ Activate the RW feature code with the 15 command
15 RW ;
100 Inverse right of way lines;
7 1 15 10.1 16 23 20.1 35 30.1 36 ;
7 1 13 10.1 14 25 20.1 33 30.1 34 ;
$ Activate the CL feature code with the 15 command
15 CL ;
100 Inverse road centerline;
7 1 1 11 10.1 12 21 20.1 31 30.1 32 5 ;