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  2. Knowledge Base
  3. GeoHECRAS
  4. Add Survey Points Command

Add Survey Points Command

Survey points are a collection of elevation points with x-, y-, and associated z-values. These points generally represent a series of points showing the high and low extremes in the terrain that define topographic features such as streams, levees, ridges, and other phenomena.

The Add Survey Points command of CivilGEO software is used to add survey point data as a layer to the Map View.

Follow the steps below to use the Add Survey Points command:

  1. From the Map Data ribbon menu, select the Add Survey Points command.
    Survey points command
  2. The Select Survey Points File dialog box will be displayed. Now, from the folder containing the supported survey points file, select the desired file type and then click the [Open] button.
    Select survey points file dialog box
  3. The Add Survey Points dialog box will be displayed showing the content details of the selected survey points file.
    Add survey points dialog box

The following sections describe the Add Survey Points command and how to interact with the above dialog box.

Point Layer Details

This section is used to select the file format into which the survey points data are to be imported. The file needs to be in an ASCII text file format, with either commas, tabs, or spaces delineating the data fields contained within each row of the survey points file.
Point layer details

The software will attempt to determine the selected survey points file format based on the file extension. However, the user can change the file format to be used after the file is selected.

For reference, Easting = X coordinate and Northing = Y coordinate.

The following survey points file formats are supported:

  • ASC (ASCII text file)
  • CSV (Comma-Separated Variables)
  • ENZ (Easting, Northing, Elevation)
  • NEZ (Northing, Easting, Elevation)
  • PENZ (Point, Easting, Northing, Elevation)
  • PENZD (Point, Easting, Northing, Elevation, Description)
  • PNEZ (Point, Northing, Easting, Elevation)
  • PNEZD (Point, Northing, Easting, Elevation, Description)
  • PNT (ASCII Point File)
  • PTS (ASCII Point File)
  • TXT (ASCII Point File)
  • XYZ (Easting, Northing, Elevation)

Point File Preview

The Point File Preview panel shows the first 100 points contained within the survey points file. It allows the user to see the contents of the survey points file and to change the file format to be used for importing based upon the preview of the contents.
Point file preview 1

However, changing the file format also changes the column header(s) of the Point File Preview panel. For example, changing the file format from ENZ (Easting, Northing, Elevation) to PENZD (Point, Easting, Northing, Elevation, Description) will display the additional column header(s) in the Point File Preview panel as shown below.
Pont file preview 2

Elevation Data Adjustment

This optional section allows the user to adjust the survey points data elevation values if the elevation data is in a different unit system or needs to have a datum adjustment. By enabling the Load as Point Cloud check box option, the user can import the loaded survey points data as a point cloud.
Elevation data adjustment

After specifying all the required importing details, click the [Import] button to add the survey points to the Map View.

About the Author Chris Maeder

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