[Tutor] Plotting subsets of data

[Colin Ross]

Perfect, thank you Danny!

On Mon, Dec 8, 2014 at 3:49 PM, Danny Yoo <dyoo at hashcollision.org> wrote:

> On Mon, Dec 8, 2014 at 7:48 AM, Colin Ross <colin.ross.dal at gmail.com>
> wrote:
> > Good afternoon,
> >
> > I am using the following to code to plot the output from an optical
> encoder:
>
> Hi Colin,
>
> Matplotlib is a third-party library, so you may also consider asking
> the matplotlib folks.
>
> From a brief look at:
>
>
> http://matplotlib.org/1.4.2/users/pyplot_tutorial.html#working-with-multiple-figures-and-axes
>
> it appears that you can override the default axis, and specify xmin,
> ymin, xmax, and ymax values.
>
>     http://matplotlib.org/1.4.2/api/pyplot_api.html#matplotlib.pyplot.axis
>
> For your particular case, you may want to just limit your x axis, in
> which case xlim() might be appropriate.
>
>     http://matplotlib.org/1.4.2/api/pyplot_api.html#matplotlib.pyplot.xlim
>
>
> If all else fails, just filter your data before submitting it to the
> grapher.  The program loads data here, using loadtxt
> (http://docs.scipy.org/doc/numpy/reference/generated/numpy.loadtxt.html):
>
>     data = np.loadtxt('2014_12_04-16_30_03.txt',skiprows = 0 ,usecols =
> (0,1))
>
> and it's just a numpy array: you can manipulate numpy arrays.   See:
>
>
> http://stackoverflow.com/questions/26154711/filter-rows-of-a-numpy-array
>
> as an example of an approach.
>
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