Advanced submision: Cell bounding box macro

This macro is useful in instances where the centre-off-mass for multiple selected polygons are to be found (e.g. for gratings).

Download

To start using this macro, first download the source file. This file is a slightly modified version of the macro with the same name in KLayout website (see original) to include the centre-of-mass location in the information window.

Import into KLayout

Import into KLayout by opening KLayout, then selecting Macros from the toolbar. Click on Import File symbol on the upper-left toolbar, then select the downloaded file. Close the Macros tab to see it listed under Tools-> Cell Bounding Box

Open your GDS file

The macro looks for a selected cell to define the bounding box - if called on an empty KLayout instance it will throw an error. Open your GDS file and copy the desired polygons into a new layout (File->New Layout with the default settings, Crtl+C,Ctrl+V work for copy-paste).

Run macro

From Tools->Cell Bounding Box, run the macro to see the centre position of the copied polygons