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Trimming Contours and other Lines

A Mark Roberts handy hint

Trimming contours at the edge of your map is a common and painful requirement but here’s a hint to reduce the hard work.

[This works just as excellently for trimming northing lines – Ken]

 The old way

First, here is the way I’ve always done it.

I have Preferences|Context Menu off and I have a keyboard shortcut (Ctrl-1) for Object|Cut Object|Cut Line.

Starting with the first contour selected and the cutting tool selected:

 Left click on contour to cut it

Right click twice to unselect contour and revert to selection tool

Left click on the next contour to select it

Ctrl-1 to select cutting tool …

 The easy method

Select th ecutting tool:

 Left click on contour to cut it

Alt-Left click on the next contour to select it

Left click on contour to cut it …

 Alt forces a different object to be selected and you still have the cutting tool! This method cuts contours with two clicks instead of four clicks and a keypress.

Thanks to Hubert Klauser at OCAD AG for this hint.

 Other methods

Map|Export Part of Map or Object|Crop Objects will also trim contours for you. But if you are trimming at a boundary line feature like a fence or a road, that gets trashed in the process.