Re: More Graphic Bugs

*To*: mathgroup at christensen.cybernetics.net*Subject*: [mg1233] Re: [mg1212] More Graphic Bugs*From*: Richard Mercer <richard at seuss.math.wright.edu>*Date*: Fri, 26 May 1995 04:20:00 -0400

> Another Bug in Graphics. This one come up totally > unexpected. In the following code, you will see a red > dot about 25 pixel in diameter at location {4,.5}. WHERE > DOES THIS DOT COME FROM? > > Plot[ { Sin@x }, {x,0, 6}, > AspectRatio->Automatic, PlotRange->All, > PlotStyle->{{Hue[0],Thickness[.09]}}, > Prolog->{Thickness[.04],Line[{{-1,0.5},{4,.5}}]} > ] The Red Dot is a punishment from the Mathematica Gods for using the horrible notation { Sin@x } instead of just Sin[x]. Ugh! Seriously, this is a good one. It is apparently some sort of Postscript problem that starts graphing where the Prolog ended rather than where the graph starts. It appears to be device-independent. (It happens on my NeXT, which generally does well with postscript.) > > Btw, should I also send these to WRI tech support? Do > they read MathGroup? Yes and Yes. Steve Christensen has repeatedly said to send bug reports to WRI first. Richard Mercer