gnuplotter VectorFieldPainter origins
Arrows are centered on their position of origin: in VectorFieldPainter::plotData
out << opos.x - 0.5*arrow.x << "\t"
<< opos.y - 0.5*arrow.y << "\t"
<< arrow.x << "\t"
<< arrow.y << "\n";
I find this confusing, trying to plot forces. Maybe it would make sense to add an option to start arrows on the orignin or centered at the position of origin?
Edited by Clemens Kuehn