A localization file describes the transformation from a global coordinate system to your local coordinate system. This is done by providing at least 4 pairs of points that are defined in both coordinate systems. All the points will be held in vertical and horizontal control.
To create a localization file manually, follow these instructions:
If you’re using Decimal Degrees (DD), follow the steps below. If using Degrees-Minutes-Seconds (DMS), see next step.
- Create your localization file in CSV format by downloading this template.
- Fill out the CSV template exactly following this structure:
- Enter the global coordinates
- Enter WGS84 latitude, longitude, and altitude (height above ellipsoid)
- Enter latitude and longitude with at least 8 decimal places
- Enter height in meters above ellipsoid (ellipsoidal height) with at least 3 decimal places.
- Enter the Northing (N) Easting (E) Elevation (Z) coordinate of each point in your local coordinate system and state your unit of measure next to each column header as below:
- m: meters
- us-ft: U.S. survey feet
- ft: feet
Note: Don’t forget to provide at least 4 pairs of coordinates. If you add more points, label them cp5, cp6 cp7, and so on.
Example: (sample text in blue)
If you’re using Degrees-Minutes-Seconds (DMS), follow these steps:
- Create your localization file in CSV format by downloading this template.
- Fill out the CSV template exactly following this structure:
- Enter the global coordinates
- Enter WGS84 latitude, longitude, and altitude (height above ellipsoid)
- Enter latitude and longitude with at least 9 decimal places
- Enter height in meters above ellipsoid (ellipsoidal height) with at least 3 decimal places.
- Enter the Northing (N) Easting (E) Elevation (Z) coordinate of each point in your local coordinate system
- State your unit of measure next to each column header:
- m: meters
- us-ft: U.S. survey feet
- ft: feet
- Make sure to add N and E before your coordinates (see example)
Note: Don’t forget to provide at least 4 pairs of coordinates.
Example: (sample text in blue)
Note: Your final localization.csv file should include control points that apply BOTH vertical and horizontal localization. Please exclude any control points that do not apply to both.
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