plotting improvements

[newville]

should add functions for these plot options (probably for wxmplot):

plot text to user coordinates with arrows (mpl axes.annotate) plot config frame should expose 'toggle y log_scale'

bar graphs histograms expose mpl axhspan, axvspan contour plots as option or optional layer for imshow

[newville]

plot text and arrows done. contour plots done.

[maurov]

A couple of things for wx/the plotter.py plugin:

"plot_axhline" works, but to draw the line, one has to click on the plot window. I think we have to force an update/draw after the plotter.Raise(), right?

"plot_axvline": should be corrected to "plotter.panel.axes.axvline(x, ymin=ymin, ymax=ymax, **kws)"?

In addition, I would ask if it is possible to expose from Matplotlib also the SVG file format in the save dialog. PNG is nice, but a vector format is more versatile.

[newville]

Hi Mauro,

Thanks!

SVG saving is possible -- just give a file name ending in '.svg'. Similar for jpg, I believe. But, I fixed this (in wxmplot) so that PNG, SVG, and JPG are explicitly listed as output formats.

plot_axhline() and plot_axvline() were definitely badly broken. They work better know, but may need further work (xmin/xmax/ymin/ymax should be in data coordinates).

Cheers, --Matt