This command will station a polyline or centerline file at a given
interval distance. The options
for this command are set in the dialog shown below. After setting the
options, click OK on the
dialog and then pick the polyline or select the centerline file.
Distance for Stations is the primary interval for stationing.
Distance for Intermediate Stations is the intermediate interval for stationing.
Beginning Station is the beginning station of the centerline for stationing.
Locate Even Stations labels the stations at the distance interval (i.e. 2+00, 3+00, etc.).
Locate Odd Stations labels the non-interval stations at the polyline/centerline end points and PC and PT points.
Locate User-Entered prompts you for individual stations to label.
Without the Increment Station Labels from Beginning Station option, the program increments the station labels from zero. For example, if the station interval is 100 and the polyline starting station is 145, then the program will label 2+00, 3+00, etc. With this option active, the station labels are incremented from the starting station. In this example, the program would then label 2+45, 3+45, etc.
When Specify Start/End Stations is checked, only the
stations
between and including the
specified starting and ending stations will be labeled. If locate
centerline points and offset points are
toggled on, only points within the specified stations will be located.
When Erase Previous
Station Labels is checked, previous station labels are
erased when new ones are generated.
Draw PC Lines draws perpendicular lines at the
starting and ending (PC and
PT) stations of an arc of the polyline/centerline. The lines are drawn
up to the radius point of the
arc or to the distance set in the Max Length field.
Max Length controls the maximum length for the PC lines
to be drawn described above.
When Label PC On Centerline is
checked, the station of the PC and PT will be labeled on
the centerline as well as the PC and PT lines. When not checked
only the PC and PT lines will be labeled.
Draw PI Lines
draws a 2 segment polyline in both tangent directions from the PI as a
marker for the PI.
When Label PI Stations is
checked, the PI station is labeled at the PI point.
When Locate PI Points is checked
a point will be created at the PI of a horizontal curve graphically and
written to
the active coordinate file.
When Label Station Text is checked, this command places
station
text along the polyline at the
angle of the corresponding segment. After toggling this option
on, the Label
Setup button will become available for selection. Select it to
configure the label settings as desired. Select the Marker Setup
options to modify the size of the markers for certain types of
stations. See definitions following the dialog box.
Label Setup
The Marker
Setup options control the size of markers for different station
types as well as the layer the markers will be drawn on.
Specify whether to define the Centerline By
picking a 2D polyline or 3D polyline in the drawing or selecting a
centerline
(.CL) file.
Use Station Type to specify the stationing format to use.
Use Type of Curves to specify whether you are labeling a roadway curve (arc definition) or railroad curve (chord definition).
Locate Centerline Points will
locate
points and store them in
the current CooRDinate file.
Locate Radius Points will locate
the radius points of any arc segments.
Starting Point Number determines the
starting point number
for the points to be located.
There are two ways to Set Elevations for the centerline
points and offset points to be
created.
When Include Station in
Description is checked, the station along the
centerline will be included in the resulting offset point.
Description Prefix
is an optional user-specified prefix to be added to the point
description.
Description Suffix is an optional user-specified suffix to be added to the point description.
When Label Sta Equations is checked on any station equation, contained in a centerline (*.cl) file will be labeled. This option is only available when stationing a centerline file (*.cl).
Locate Offset Points will create points at the
specified left and right offset
distances from the centerline. Options for setting the elevations
and descriptions of the points are available from the Offset Setup
dialog.
Station Polyline Dialog
Polyline should have been drawn in direction of increasing
stations.
Select polyline that represents centerline: select a polyline
Closeup of Station + at Tick Mark option |
Labels with Label PC on Centerline checked on |
Labels set to perpendicular and Max Length of PC lines set to 75.0 |
Labels with Draw PI Lines, Label PI Stations and Locate PI Points all checked on |
Labels using Centerline By 2D Polyline (Horzontal Station) |
Labels using Centerline By 3D Polyline (Slope Station) |
Pulldown Menu Location: Centerline
Keyboard Command: stapl
Prerequisite: A polyline or CL file
File Name: \lsp\staent.lsp