Eric Firing wrote: > Christopher Barker wrote: >> Has anyone used MPL to make stick plots? If so, can I borrow your code? > If no one volunteers anything, then I suggest using quiver(..., > headlength=0, headwidth=0, headaxislength=0), together with > quiverkey(...). This will effectively give you a stick plot, with lots > of flexibility.
Thanks, I was thinking that quiver() would get direction wrong, as the x and y scales are in totally different units, but it looks like that's not the case if you use the "angles" keyword: angles: [‘uv’ | ‘xy’ | array] With the default ‘uv’, the arrow aspect ratio is 1, so that if U*==*V the angle of the arrow on the plot is 45 degrees CCW from the x-axis. With ‘xy’, the arrow points from (x,y) to (x+u, y+v). Alternatively, arbitrary angles may be specified as an array of values in degrees, CCW from the x-axis. > It could be implemented more efficiently in any of > several ways, but it would take work to do it well. I hope I'll get time to do that, but I don't really like quiver stick plots anyway. I prefer plots (that I don't know the name of) that: Time is on the x axis Magnitude of the velocity is the x axis At each data point, there is a dot, and the direction is given with a unit-length arrow originating at that dot, in the direction of the observation. I wrote a version of this a while back with the old MPL transforms mechanism, but haven't taken the time to translate it. -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception chris.bar...@noaa.gov ------------------------------------------------------------------------------ The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users