Re: Graphics in PlotMarkers buggy in Mathematica 7

*To*: mathgroup at smc.vnet.net*Subject*: [mg95258] Re: [mg95244] Graphics in PlotMarkers buggy in Mathematica 7*From*: Syd Geraghty <sydgeraghty at me.com>*Date*: Mon, 12 Jan 2009 22:15:03 -0500 (EST)*References*: <200901121124.GAA19754@smc.vnet.net>

Jens, The workaround you suggested has a problem if the PlotMarker Circle[] is altered to a different radius. ListPlot[{{{1, 1}}, {{1, 2}}}, PlotMarkers -> {HoldForm at Graphics[{Hue[0.5], Circle[{1, 1}, 0.01]}], HoldForm at Graphics[{Hue[0.96], Circle[{1, 2}, 2]}]}] Does not change the PlotMarker circle radius at all in either case. This seems like a bug and I have reported it to WRI. Syd Geraghty B.Sc, M.Sc. sydgeraghty at mac.com Mathematica 7.0.0 for Mac OS X x86 (64 - bit) (21st November, 2008) MacOS X V 10.5.6 MacBook Pro 2.33 GHz Intel Core 2 Duo 2GB RAM On Jan 12, 2009, at 3:24 AM, JUN wrote: > in Mathematica 7 on Mac OS X, try to execute this simple example: > > ListPlot[{{{1, 1}}, {{1, 2}}}, PlotMarkers -> {Graphics[{Hue[0.5], > Circle[]}], Graphics[{Hue[0.96],Circle[]}]}] > > Whereas this works in Mathematica 6.03, there is now the error > "An improperly formatted option was encountered while reading a > GraphicsBox. The option was not in the form of a rule." > > This is apparently caused by any graphics directive (such as Hue, > Opacity, Thickness), but I was able to reliably work around it by > replacing Graphics with HoldForm@Graphics. > > There seems to be no problem with Graphics3D markers, and according to > the documentation there should be no problem with arbitrary Graphics > as plot markers, either. I'm guessing there has been some subtle > change in Graphics' inner workings that conflicts with its use in > PlotMarkers - but who knows. > > Anyway, HoldForm is the cure, in case anyone else stumbles over this > issue.