2.16 Control coordinates
Control (known) coordinates are described by the startend pair tag
<coordinates>
. A series of points with known coordinates can be
defined using the <point />
tag. The variancecovariance matrix
for the entire set of points can be created with a single
<covmat>
tag. In the <point />
tags, a point
identification (ID) and its coordinates (x, y and z) must be listed.
Although the order of the <point />
tag attributes is irrelevant
in the corresponding variancecovariance matrix, the expected order of
the coordinates is x, y and z (the horizontal coordinates x, y, or the
height z might be missing, but not both). The type of the points may be
defined either directly within the <coordinates>
tag or outside
of it.
Example
 <coordinates>
<point id="1" x="100.00" y="100.00" />
<point id="2" z="200.00" y="200.00" x="200.00" />
<point id="3" z="300.00" />
<covmat dim="6" band="5" >
... <! covariances for 1x 1y 2x 2y 2z 3z >
</covmat>
</coordinates>

This document was generated by Ales Cepek on March 25, 2014 using texi2html 1.82.