On 7/11/06, John Hunter <[EMAIL PROTECTED]> wrote:
> You don't need any defense -- it's no secret that mpl is
> under-documented. If you know how to look, the information is usually
> there, but the trick is knowing how to look
>
> In [3]: l, = plot([1,2,3])
>
> In [4]: setp(l)
Ah, thanks for that reminder! That's useful to know/re-know.
> This reminds me -- of late I've been wishing for a grep-like feature
> in ipython
>
> In [2]: setp(l) | grep dash
>
> to see just the output of setp that matches "dash". In your case, you
> would have seen
>
> dash_capstyle: ['butt' | 'round' | 'projecting']
> dash_joinstyle: ['miter' | 'round' | 'bevel']
> dashes: sequence of on/off ink in points
>
> suggesting that you can not only configure the dash style, but the
> dash cap and join style as well :-)
>
> Of course, I could add this functionality to setp but it would be more
> generally useful to have it in ipython.
>
> The use case I had in mind today was in history, when I had a bunch of
> commands I wanted to grep through
>
> In [1000]: history | grep xxx
Yes, I also have wanted something like this. The problem is that many
utilities don't return anything, they just print to stdout (setp is
one such tool). Which means that we'd need to capture all of stdout
and have it available for further processing always, in a non-blocking
way (so typing 'ls' doesn't make you wait forever before printing).
This is really pushing ipython far into the shell territory, albeit in
a manner that would be very useful. I'll forward this to the
ipython-dev list, to see if Ville and Walter (the brains behind the
fancy ipipe) want to pick this ball up and run with it. I'm now
pretty much only working with Brian on the new branch.
Incidentally, this would bring ipython much closer to Microsoft's
Monad shell model:
http://arstechnica.com/guides/other/msh.ars
Ever since that review came out, I've thought that python/ipython
already has 90% of those tools, save a proper (but better) pipe-like
model for chaining object results. With a bit of time investment,
this could certainly be done.
Cheers,
f
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