Create Sample Lines - By Station Range Dialog Box

Use this dialog box to create sample lines along an alignment for a specified range of stations.

General

Alignment

Displays the name of the currently selected alignment associated with the range of stations.

Station Range

From Alignment Start

Specifies whether the station range starts at the beginning of the alignment (that is, at the station located at the beginning of the alignment):

• True: Begins the station range at the start of the alignment.
• False: Specifies the beginning station in the range. Enter or pick a beginning station.

Start Station

Specifies the beginning station in the range. Enter a station value directly or click to pick from the drawing. Available if From Alignment Start is False.

To Alignment End

Specifies whether the station range ends at the end of the alignment (that is, at the final station along the alignment):

• True: Ends the station range at the end of the alignment.
• False: Specifies the ending station in the range. Enter or pick an editing station.

End Station

Specifies the end station in the range. Enter a station value directly or click to pick from the drawing. Available if To Alignment End is False.

Left Swath Width

Snap To An Alignment

Specifies that the sample line extends out to an alignment at each station (rather than being a hard-coded width).

• True: Creates the left swath by snapping to a specified offset alignment at each station. If you specify True, then select the alignment to use from the Alignment list.
• False: Does not snap to an offset alignment. If you specify False, then use the Width setting to specify the swath width.

Alignment

Specifies the alignment to which the left swath is extended. Available if Snap To Alignment is True.

Note: Although all alignments in the current drawing are listed, do not select the parent alignment. The resulting length will be zero.

Width

Specifies the swath width to the left of the alignment, using the actual ground units. Enter a positive value in ground units. Available if Snap To Alignment is False.

Right Swath Width

Snap To An Alignment

Specifies that the sample line extends out to an alignment at each station (rather than being a hard-coded width).

• True: Creates the right swath by snapping to a specified offset alignment at each station. If you specify True, then select the alignment to use from the Alignment list.
• False: Does not snap to an offset alignment. If you specify False, then use the Width setting to specify the swath width.

Alignment

Specifies the alignment to which the right swath is extended. Available if Snap To Alignment is True.

Note: Although all alignments in the current drawing are listed, do not select the parent alignment. The resulting length will be zero.

Width

Specifies the swath width to the right of the alignment, using the actual ground units. Enter a positive value in ground units. Available if Snap To Alignment is False.

Sampling Increments

Use Sampling Increments

Specifies whether sample lines are created at incremental stations along the alignment:

• True: Changes the default sample increments for either tangents, curves, or spirals. For example, you may want to decrease the values for curves and/or spirals.
• False: Sample lines are not created at stations along the alignment.

Increment Relative To

Specifies how the station range is incremented.

• Absolute Station: Increments the stations from station 0 of the alignment.
• Station Range Start: Increments the stations from the start station of the alignment (which may not be 0) or from the station specified under Station Range as the Start Station .

Increment Along Tangents

Specifies the sample increment distance along tangents, using the actual ground units. Enter a positive value in ground units.

Increment Along Curves

Specifies the sample increment distance along curves, using the actual ground units. Enter a positive value in ground units.

Increment Along Spirals

Specifies the sample increment distance along spirals, using the actual ground units. Enter a positive value in ground units.

Note: Changing sampling increments can affect performance on rebuild. A shorter increment means more sampling stations, and thus a larger drawing.

Additional Sample Controls

At Range Start

Specifies whether a sample line is created at the beginning of the specified range.

At Range End

Specifies whether a sample line is created at the end of the specified range.

At Horizontal Geometry Points

Specifies whether additional sample lines are created at horizontal geometry points, such as, at the start of a spiral, or at a spiral-curve point.

At Superelevation Critical Stations

Specifies whether additional sample lines are created at superelevation critical stations.