adjust_network: adjust_network

In kmhaug/gama: gama - adjustment of a geodetic free network

Description

run adjustment of a geodetic free network, using the GNU gama library.

Usage

adjust_network(fixed, obs, output = NA)

Arguments

fixed	data.frame; giving the coordinates to the fixed (known) points in the network.
obs	data.frame; giving the measured distance and bearing to the known and unknown points.
output	optional filename for the output from gama-local. Some info from the R-package will be added. No information from gama-local will be removed.

Value

a data.frame with the coordinates for all the points in the network, including the known points. Optionally a file with the output from the adjustment in gama-local (adjustment errors etc.).

Note

the input coordinates of the known points should be formated as a three-column data.frame with three columns

• id name of the point

• x x (east) coordinate of the point

• y y (north) coordinate of the point

The input distances and bearings should be formated as a data.frame with four colums:

• from name of the point from where the observation is done

• to name of the observed point

• direction bearing to the observed point

• distance distance to the observed point

Author(s)

Marius Hauglin 2016-2017 [e-mail]

References

Ale<c5><a1> <c4><8c>epek, GNU gama project, https://www.gnu.org/software/gama/

kmhaug/gama documentation built on May 24, 2019, 5:01 a.m.