Updating scatter points

This notebook will show examples on how to update positions and colors of scatter points using interactive widgets.

import plopp as pp
import scipp as sc
import ipywidgets as ipw
%matplotlib widget

a = pp.Node(pp.data.scatter())
b = pp.Node(pp.data.scatter(seed=2) * 10.0)

slider = ipw.FloatSlider(min=0, max=60, value=30,
                         description='Position of orange group',
                         style={'description_width': 'initial'},
                         layout={'width': '500px'})
slider_node = pp.widget_node(slider)

@pp.node
def move(da, x):
    out = da.copy(deep=False)
    out.coords['x'] = da.coords['x'] + sc.scalar(x, unit=da.coords['x'].unit)
    return out

move_node = move(da=b, x=slider_node)

f = pp.scatter({'a': a, 'b': move_node}, cbar=False)
f.bottom_bar.add(slider)
f.canvas.xrange = [-40, 100]
f