[[!meta  title="PlotPick program"]]
[[!meta  date="2008-10-01 23:55:03"]]
While calibrating my photodiodes, some of my surface bumps went out of
the linear-response range.  Since I'm not confident in my ability to
set boundaries programmatically at the moment, I thought I'd write up
a little utility to record clicks on key data points, so I could pick
out the “good data”.

Enter [[plotpick.py]] the raw-data version of [[clickloc]].  Hope you
like it :).  I've also written up a simple data generator
([[random-data.py]]), which allows you to try out plotpick::

  $ random-data.py -n 200 | plotpick.py

[[Matplotlib]] has supported the [`picker` infrastructure][picker] in
various guises [since `pickeps` in 2007][e26b7b9], but I only just
discovered it.  Before version 0.3, `plotpick.py` used a much less
elegant cursor implementation based on [cursor_demo.py][].

[[calibcant]], my modern cantilever calibration suite, [repositions
the piezo before every bump][reposition], so out-of-range bumps are no
longer an issue.

[picker]: http://matplotlib.org/users/event_handling.html#object-picking
[e26b7b9]: https://github.com/matplotlib/matplotlib/commit/e26b7b9a78785245d734e22a2cd8314dfa783c7c
[cursor_demo.py]: http://matplotlib.org/examples/pylab_examples/cursor_demo.html
[reposition]: http://git.tremily.us/?p=calibcant.git;a=commit;h=77e8244d80306dcea9ab1422cb45630a92494f85

[[!tag tags/code]]
[[!tag tags/linux]]
[[!tag tags/programming]]
[[!tag tags/python]]
[[!tag tags/theory]]