Control Point File Requirements and Formats

Control point files contain the surveyed coordinates of the control points you added while you were scanning or from a total station.

Control Point File Requirements

The control point file must meet the following conditions:

• Surveyed coordinates must be in a right-handed coordinate system.

• For each dataset, at least 3 control points need to be recorded and need to be contained in the surveyed control point file.

• All coordinate values must be in the metric system.

• Geo-referenced coordinates can be used.

• If you are using a local coordinate system (the origin is arbitrarily self-defined), then the origin should not be too far from the scanned site, ideally no more than a few kilometers. If the data is more than 20,000 meters away from your site origin, you will not be able to add your data to your NavVis IVION site.

Control point file format

The surveyed control points can be in .txt or .csv format.

CSV format

.csv files can be exported from e.g. Microsoft Excel. Make sure to use the following format:

CP00001, 1000.458, 1964.458, 0.1
CP00002, 1005.000, 2000.000, 0.2
CP00003, 1002.862, 2025.802, 0.3
# CP-wrong, 9002.212, 3025.432, 5.3. This entry will be ignored with "#" symbol

• Each line must contain the following values for each control point: ID (name), X, Y, Z (coordinates).

• Separate all values in each line with commas. Other delimiters cannot be interpreted by the software.

• Empty lines and data beyond the fourth column will be ignored.

• Exclude lines by adding # to the beginning of the line.

TXT format

A .txt control point file must be set up in the following format:

CP00001 1000.458 1964.458 0.1
CP00002 1005.000 2000.000 0.2
CP00003 1002.862 2025.802 0.3
# CP-wrong 9002.212 3025.432 5.3 This entry will be ignored with "#" symbol

• Each line must contain the following values for each control point: ID (name), X, Y, Z (coordinates).

• Separate the fields with a space.

• Empty rows and data beyond the fourth column will be ignored.

• Exclude lines by adding # to the beginning of the line.