Station Lines¶
Concepts¶
The plugin creates station lines with some parameters
Stations choices¶
Stations can be at vertices and/or at equally spaced distance.
If both are checked, stations are ordered along the path of the polyline.
Side¶
Side is:
- Left: station lines are on left side
- Right: station lines are on right side
- Both: station lines are on left and right side
Input:
| Field: | String value with: |
|---|
- 0 = Right
- 1 = Left
- 2 = Both
- Right (and all variants: RIGHT, RigHt, ...)
- Left (and all variants: LEFT, LEfT, ...)
- Both (and all variants: BOTH, BotH, ...)
| Value: | A fixed string value |
|---|
Length¶
A negative value provide the opposite side. For example, Right side with a negative value is like Left side with a positive value.
Input:
| Field: | Field with a numerical value (Int or Float) |
|---|---|
| Value: | A fixed numercial value |
Angle¶
Angles are in degree and are normalized.
Examples by side (Red line is a polyline):
Right¶
Left¶
Both¶
Input:
| Field: | Field with a numerical value (Int or Float. Can be negative) |
|---|---|
| Value: | A fixed numercial value between 0 and 360 |
Output¶
Station lines are created on a single layer with these attributes:
- FID: ID of the original linestring
- SL_ID: ID of the station lines. Each SL have a unique ID
- SL_SEGMENT: ID of the segment of the linestring
- SL_ANGLE: Angle of the SL
- SL_LENGTH: Length of the SL
- SL_ORIENT: Orientation/Side of the SL