Re: [Matplotlib-users] connecting data points...

[Peter G. <pgr...@ge...>]

John Hunter wrote:

[snip]

>Here is a sample implementation
>
>from matplotlib.matlab import *
>def segplot(x, y, fmt, maxdelta, **kwargs):
>    """
>    Plot x versus y, breaking the plot at any point where x[i] -
>    x[i-1] > maxdelta. kwargs are passed on to plot
>    """
>    x = asarray(x)
>    y = asarray(y)
>    d = diff(x)
>    lines = []
>    ind = nonzero(greater(d, maxdelta))
>    ind = ind+1
>    if not len(ind):
>        lines.extend( plot(x,y,fmt,**kwargs) ) 
>    else:
>        allind = [0]
>        allind.extend(ind)
>        allind.append(len(x))
>        for i1,i2 in zip(allind[:-1], allind[1:]):
>            lines.extend( plot(x[i1:i2], y[i1:i2], fmt, **kwargs) )
>    return lines
>
>t = [0,1,2,3,4,5,105,106,107,187, 200, 212, 300, 320]
>s = [1,4,5,3,9,11,-5,-8,3,12, 15, 12, -1, 3]
>segplot(t, s, 'b-o', 40, antialiased=False)
>grid(True)
>show()
>
>I'm inclined not to make this part of plot, since plot processes a
>variable number of arguments it makes it a little difficult.
>Certainly doable, but I'm hesitant to put too much on plot because it
>might become unwieldy.  But a new function, like segment plot, would
>be easy enough to include.
>
>Any suggestions for a name, or additional functionality?
>  
>
Thanks for the quick solution. I think the name is just fine.

Best,

-- 
Peter Groszkowski         Gemini Observatory
Tel: +1 808 974-2509      670 N. A'ohoku Place
Fax: +1 808 935-9235      Hilo, Hawai'i 96720, USA