Hi The problem is in scaling the arrows. I used "arrow". look for plots with "arrow". http://sage.math.canterbury.ac.nz/home/pub/138 (2d is at the bottom- no problem, 3d is in the middle and requires jmol) http://sage.math.canterbury.ac.nz/home/pub/142 Original credit for this idea is to Katie Glockner: http://sage.math.canterbury.ac.nz/home/pub/83/
Of course you know how to do gradient fields: http://sage.math.canterbury.ac.nz/home/pub/210 Paul's stuff (lamar) is the best static material I have every seen. Hope this helps, Linda FS On Monday, May 19, 2014 5:18:15 PM UTC+2, Jango wrote: > > Hi, > > Is there an easy (or a standard) way to display direction arrows on a > parametric curve, that would show the direction of the curve as the > parameter value increases? Something like this (random image from the > internet): > > http://tutorial.math.lamar.edu/Classes/CalcII/ParaTangent_files/image002.gif > > Thanks, > J. > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
