Data Bar - Data Points Grid
- Last UpdatedSep 04, 2023
- 3 minute read
The Data Points grid provides a presentation of data point details, and a direct means of editing certain attributes.
Position coordinates and tangent values can be typed in directly, or copied and pasted (using <Ctrl+C> and <Ctrl+V> respectively) both within the grid and to and from external spreadsheet-type grids. It is recommended (though not essential) that data points are visible in the graphics views during this type of editing, so the impact of changes on curve geometry can be clearly seen.
Data Points grid column functions
Each row in the grid corresponds to a single data point. The contents of the columns are as follows:
|
Column |
Description |
|---|---|
|
Curve |
Name of the curve that the data point belongs to (read only). |
|
Index |
Index of the data point within the curve's set (read only). |
|
Point Type |
This setting determines the tangency conditions at the data point, and whether tangents can be specified for the curve going 'into' and coming 'out of' the point (see comments below) |
|
Active |
Indicates whether or not the curve is fitted to the point. This is only relevant if the Correspondence setting (Curves grid) for the curve in question is Fitted. Inactive data points are displayed greyed in the graphics views. |
|
x |
Longitudinal position of the data point, expressed in the appropriate longitudinal units (constant dimensions such as meters or decimal feet, or in terms of frame or station position) |
|
y |
Transverse position (offset) of the data point |
|
z |
Vertical position of the data point |
|
pre |
Angle about the x-axis of curve tangent going into the data point (see comments below) |
|
pre |
Angle about the y-axis of curve tangent going into the data point (see comments below) |
|
pre |
Angle about the z-axis of curve tangent going into the data point (see comments below) |
|
post |
Angle about the x-axis of curve tangent coming out of the data point (see comments below) |
|
post |
Angle about the y-axis of curve tangent coming out of the data point (see comments below) |
|
post |
Angle about the z-axis of curve tangent coming out of the data point (see comments below) |
Cells that do not accept user input (either read only columns or as a result of a locked axis) are greyed out.