lorenzschmid / dynplot

Extends matplotlib's pyplot.plot() to allow for repetitive plotting to the same figure

dynplot

Extends matplotlib's pyplot.plot() to allow for repetitive plotting to the same figure

There is no simple way to update multiple lines repetitively and continuously of an existing figure in matplotlib. Using this class as drop-in replacement for matplotlib's pyplot, the figure's line will be updated upon every call of the plot() method and create thus a dynamic plot, constantly refreshing.

Current limitations:

• Only the plot function is supported.

• The figure and axes are only configurable via the internal fig and ax attribute, i.e. the following call will _fail:

  >>> dplt.title('Will fail!')

  In this case, instead use the following:

  >>> _ = dplt.ax.set_title('Will work!')

Examples:

Single call during one repetition, could also contain multiple x/y data pairs.

>>> from dynplot import dynplot >>> from math import sin, pi >>> >>> dplt = dynplot() >>> for i in range(100): >>> x = range(i, i+20) >>> y = [sin(2*pi*x/20) for x in x] >>> dplt.plot(x, y) >>> _ = dplt.ax.set_title('Wave') >>> dplt.show()

Multiple calls (i.e. multiple lines) during one repetition

>>> from dynplot import dynplot >>> from math import sin, pi >>> >>> dplt = dynplot() >>> for i in range(100): >>> x = range(i, i+20) >>> y1 = [sin(2*pi*x/20) for x in x] >>> y2 = [sin(2*pi*x/10) for x in x] >>> dplt.plot(y1) >>> dplt.plot(y2) >>> dplt.show()

Installation

The module is build in a way to be installable with pip:

1. Clone this repository and enter it
2. Type pip install . to install it

In order to add it to a requirements file as normally obtained from pip freeze, use the following line:

-e git+https://github.com/lorenzschmid/dynplot.git#egg=dynplot==1.0.0