Default directives for graphics primitives

*To*: Mathematica user's group <MathGroup at yoda.physics.unc.edu>*Subject*: Default directives for graphics primitives*From*: Robby Villegas <Villegas at knox.bitnet>*Date*: Tuesday, February 25, 1992

Dave, If you are using Plot to generate pictures, then you could define your own settings for directives for any 2D primitives as part of PlotStyle: SetOptions[Plot, PlotStyle->Thickness[0.001]] You can also give a list of directives as the setting for this option, such as {Thickness[0.001], Dashing[{0.04, 0.04}], PointSize[0.03], RGBColor[1, 0, 1]}. The settings for directives PointSize, Thickness, and Dashing are fractions of the width of the plot; they don't refer to units in the coordinate plane or space. For PointSize, the Mathematica book states that the measure of the _radius_ is what is given, though my experience has been that it is the _diameter_ (try PointSize[1/2] and PointSize[1] as examples to verify). If you have version 2, then you can use the new absolute measures for these directives, Absolute* for all the above. These allow you to give sizes in units of points, or 1/72 inch, I think. I don't know how to set default values for directives for Graphics(3D), only for PlotStyle as an option to Plot, ParametricPlot, and ListPlot. I've wondered about this for a while now, and if you find a way, I'll be interested to know. Robby Villegas Knox College (Villegas at Knox.Bitnet)