Flight Path Measuremets

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The length of a flight path. There is no special visualization for flight path measurements.

A measurement is started by clicking one of the buttons “Dist”, “Angle”, “Profile”, or “Area” above the measurement list.

The measurement list displays all measurements, highlighting the currently active one. As is the case with flight paths and POIs, measurements have given names and can be grouped. For the selected measurement, the information is displayed in the “Current measurement” box next to the list. For distance measurements, it is also possible to select a flight path from a list box which becomes visible as soon as the checkbox labeled “Use flight path” is activated.

Normal measurement

Measurement based on a flight path

Now the measurement points can be placed, by clicking at points in the terrain while simultaneously pressing the “Insert” key. For distance and profile measurements, an arbitrary number of points may be defined. In this case, the distance is measured along all the segments of the path defined by the measurement points. In case of an angle measurement, the measurement is done after the third point has been placed. For area measurements, an arbitrary number of points may be defined as well. In this case, the area is traced out by connecting the points in the order they were placed.

Often it is the case that the lines defined by the points are not entirely visible because they are close to or under the ground. In this case, the “Lift” setting may be changed, which has the effect of lifting all measurement points off the ground by the specified amount.

Partially obscured line

Same line with a “Lift” of 2m

Another problem is that the measurement points and the measurement values are too small to be properly seen. To remedy this, simply change the “Size” entry for the measurement in question.

Line with an object size of 0.5m

Same line with an object size of 10m

In modify mode, the numbers and the small spheres attached to the lines can be used to move a measurement as a whole.

Whereas the main result of all measurement are displayed in the measurement list, some partial measurements are shown in the point list.

The entry next to a particular point shows the partial distance from one point to the next.

To the right of the point list, details of the currently selected point are displayed: name and position.

The fields labeled “Name” and “X”, “Y”, or “Z” show the name and position of the selected measurement point and can be manually altered in order to change its name or position.

The “Jump To” button causes the camera to jump to the selected point; the “Delete” button deletes the selected point (cf. next section).