Syntax in Plot versus in ParametricPlot
- To: mathgroup at yoda.physics.unc.edu
- Subject: Syntax in Plot versus in ParametricPlot
- From: Michael.Trott at physik.tu-ilmenau.de
- Date: Wed, 9 Dec 1992 08:44:22 +0000
Hi Mathgroup,
I think there is a little nonuniformitty in the syntax of Plot
versus the syntax of ParametricPlot.
Say I would like to show several curves, then
Plot[{c1,c2,...,cn},{var,var0,var1}] works, but actually
also
Plot[{{c1,c2,...,cn}},{var,var0,var1}] works. This is necessary to display
solutions of say NDSolve via
Plot[Evaluate[[c1,c2,...,cn}/.sol],{var,var0,var1}].
Now the same problem with ParametricPlot.
Here the double List brackets do not work and one has to use:
ParametricPlot[Evaluate[({{c1,d1},{c2,d2},...,{cn,dn}}/.sol)[[1]] ],
{var,var0,var1}]
I think ParametricPlot should also work for a double bracketted first
argument. Is there anybody seeing a reason why this does not work already.
Michael Trott
trott at physik.tu-ilmenau.de