### matplotlib : subplot with polar

Polar plots in matplotlib are generated using the polar(theta, R) command. The source for this command is simply (from the amazing '??' feature of IPython):

`In [37]: m.polar??Type: functionBase Class: String Form: Namespace: InteractiveFile: c:\python25\lib\site-packages\matplotlib-0.91.2-py2.5-win32.egg\matplotlib\pyplot.pyDefinition: m.polar(*args, **kwargs)Source:def polar(*args, **kwargs): """ POLAR(theta, r) Make a polar plot. Multiple theta, r arguments are supported, with format strings, as in plot. """ ax = gca(polar=True) ret = ax.plot(*args, **kwargs) draw_if_interactive() return ret`

In order to make a subplot polar we simply add the polar=True argument thus:
`m.subplot(nrows, ncols, nsubfig, polar=True)`

Otherwise, it is treated as a cartesian plot even if you do m.polar(..) afterwards.

1. Nice post, by far the most informative and concise example of how to plot a polar subplot I've found.

### Python: Multiprocessing: passing multiple arguments to a function

Write a wrapper function to unpack the arguments before calling the real function. Lambda won't work, for some strange un-Pythonic reason.

import multiprocessing as mp def myfun(a,b): print a + b def mf_wrap(args): return myfun(*args) p = mp.Pool(4) fl = [(a,b) for a in range(3) for b in range(2)] #mf_wrap = lambda args: myfun(*args) -> this sucker, though more pythonic and compact, won't work p.map(mf_wrap, fl)

### Flowing text in inkscape (Poster making)

You can flow text into arbitrary shapes in inkscape. (From a hint here).

You simply create a text box, type your text into it, create a frame with some drawing tool, select both the text box and the frame (click and shift) and then go to text->flow into frame.

UPDATE: