To get a 2D CAD emerge qcad from (you get the Community Edition) and do not forget the parts catalog emerge qcad-parts to get the stuff in /usr/share/qcad-parts. It uses the standard dxf file format for the drawings. Qcad has a nice help.


Freemat from is an other matlab alternative. It can be started as FreeMat and runs matlab code directly, smooth and well, it has some incompatibilities when it comes to plotting graphics.

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