Maybe David can translate this for Gary if need be.
"DrillHoles" Plugin attached, it looks for polylines that are like circles then draws a Point at their centre.
It looks at the polyline extrema to compare the width and height both for roundness and size.
Once installed it appears in the Plugins menu as "PCB_Drill_Holes"
1. Open the attached cb file that contains the vectors from Gary's "theremax.jpg"
2. I made a new active layer coloured RED
3. Select all the polylines
The plugin will process selected polylines only.
4. open the plugin
5. set the parameters
"Roundness", this specifies the aspect ratio of the polyline, a roundness of 1.0 = perfect circle, 1.5 = more oval, 2 = one dimension is twice the other.
"Size", this is a filter so that only polyline "circles" with a diameter smaller then the selected size will be processed.
In the example cb file the suggested paramaters are, Roundness = 1.3 Size = 5
6. Hit "Ok", a Pointlist will be added to the project containg all the centre points of the found "circles" and these define where the component holes should be drilled.
If the results are not acceptable then Ctrl+Z will UNDO the operation.
Note: I had to remove some text from the image because some of the letters looked like circles and wanted to be drilled.
