+"""
+Plotting helpers.
+
+ * We set the default tick_formatter to 'latex'.
+
+ * We replace the plot() function with our own version that sets some
+ default legend options.
+
+"""
+
from sage.all import *
-# Save the default so that we can call it within mjo_plot.
-sage_plot = plot
+# Graphics.SHOW_OPTIONS contains the default options that will be
+# passed to show(). It already handles merging the user-specified
+# options, so we just tap into that power.
+show_opts = sage.plot.graphics.Graphics.SHOW_OPTIONS
+show_opts['tick_formatter'] = 'latex'
+
+# Save the original implementation so that we can call it from
+# within mjo_plot.
+plot_impl = sage.plot.plot._plot
def mjo_plot(*args, **kwargs):
"""
Replacement for the default plot function.
- - Use the 'latex' tick formatter.
-
- If there's a legend, set the background color to 'white' and
give it a drop shadow.
"""
- plot_opts = { 'tick_formatter': 'latex' }
-
- legend_opts = { 'back_color': 'white',
- 'shadow': True }
-
- # Merge the user's plot options with mine. The ones given as
- # kwargs should override the defaults!
- plot_opts.update(kwargs)
- kwargs = plot_opts
- p = sage_plot(*args, **kwargs)
- p.set_legend_options(**legend_opts)
+ default_legend_opts = { 'back_color': 'white',
+ 'shadow': True }
+
+ # Create an empty plot using the default options.
+ p = Graphics()
+ p.set_legend_options(**default_legend_opts)
+
+ # After trac #12936, this should propagate those options.
+ p += plot_impl(*args, **kwargs)
return p
-# Replace both the global `plot` and the one in the module. I am
-# unclear about why this is necessary, and don't care too much.
-sage.plot.plot.plot = mjo_plot
-plot = mjo_plot
+
+# This way, we don't have to try to replace all of the calls to
+# plot(); we just replace the one function that did the actual
+# implementation.
+sage.plot.plot._plot = mjo_plot