Calculation of a broken line length

This mode allows to determine the length of a broken line constructed by the operator.

The broken line construction is made by selection of base points at the left mouse button click. The straight line is constructed between two sequentially selected points. The Backspace key pressing results to deleting of the last selected  point.

During selection of base points it is possible to use fragments of existing map objects.

For this purpose it is necessary to click the right mouse button and to choose Copy object part item from the appeared menu. Then to choose the map object and to mark a fragment that is included into  broken line  by three points.

The broken line construction is finished at Left mouse button - Right mouse button clicking, its length is deduced into result window. It is possible to choose a conventional image and to write down the constructed line as map object using create by reference editor mode.

If the matrix of heights is added into the map and the line passes through it completely or particulate, then length of a constructed broken line is determined in view of a relief.

It is necessary to press a combination of keys Ctrl + Right mouse button for cancellation the started process.