Topocentric Residual Presenter

The Topocentric Residual Presenter calculates and displays residuals in a topocentric (local) coordinate system, providing East (E), North (N), and Up (U) components relative to each station.

Type

type: topocentricresidual_presenter

Options

Option	Type	Required	Default	Description
`coordinate_type`	`string`	Yes	-	Type of coordinates (`cartesian`, `degrees`, or `projected`)
`json_file`	`string`	No	-	Path to output residuals as JSON
`geojson_file`	`string`	No	-	Path to output residuals as GeoJSON

Coordinate Types

Three coordinate types are supported:

`cartesian`

Geocentric Cartesian coordinates (ECEF). Coordinates are converted to topocentric space using PROJ's topocentric projection centered on each station.

`degrees`

Latitude, longitude, height above ellipsoid. Coordinates are first converted to Cartesian, then to topocentric space.

`projected`

Coordinates in a projected CRS. These are assumed to already be in a local coordinate system and are used directly.

Output

Station Residuals Table

Column	Description
Station	Station name
East	Residual in East direction (mm)
North	Residual in North direction (mm)
Up	Residual in Up direction (mm)
Planar residual	2D residual length (E,N) in mm
Total residual	3D residual length in mm

Residual Statistics Table

Measure	Description
avg	Average residual in each direction
std	Standard deviation of residuals

Example

presenters:
- type: topocentricresidual_presenter
  name: ENU Residuals
  coordinate_type: cartesian

With degrees coordinates

presenters:
- type: topocentricresidual_presenter
  name: ENU Residuals
  coordinate_type: degrees

With file output

presenters:
- type: topocentricresidual_presenter
  name: ENU Residuals
  coordinate_type: cartesian
  json_file: residuals.json
  geojson_file: residuals.geojson