On Mon, Feb 15, 2010 at 2:32 AM, rcnelson <rnelsonc...@gmail.com> wrote: > 1) Are there any plans or would it make sense to add another keyword to the > pyplot.arrow function that allows you to choose the arrow class you would > like to use? The default could be FancyArrow so that the original usage of > pyplot.arrow will not be affected. The axes.arrow function - which it looks > like it gets called by the pyplot.arrow function - could then convert the > input arguments into the form necessary for the class you choose. >
I recommend you to use "annotate" (see below). Because most of these things are already addressed by "annotate", I don't see any immediate need to enhance "arrow". But maybe it would be a good idea to mention about "annotate" in the "arrow" documentation and vice versa. > 2) Or... Is there a simple way that you can call the arrow function with > start and end points in data coordinates, but have the arrow parameters > calculated in normalized figure coordinates? I think FancyArrow calculates > the head and body points using a line perpendicular to the line of the arrow > in data coordinates, which I think is the source of my problem (? -- at > least that is what I found doing some test calculations on my own). However, > if I call the pyplot.arrow function with the following keywords, > 'trasform=fig.transFigure, figure=fig' (as per the Artist tutorial, see > below), then the arrow looks okay, but it needs to be positioned in > normalized figure coordinates and it does not move when you zoom or > translate the plot. > I guess you can just use "annotate" (with empty string) for your purpose. See the the example below. http://matplotlib.sourceforge.net/users/annotations_guide.html#annotating-with-arrow Let me know if it does not fits your need. Regards, -JJ ------------------------------------------------------------------------------ SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
