Insets and panels

Panel axes

It is common to need “panels” for plotting secondary 1-dimensional datasets or summary statistics along the sides of axes. With ProPlot, you can generate “panels” using the panel or panel_axes commands. The resulting axes are instances of XYAxes.

To generate “stacked” panels, simply call panel or panel_axes more than once. To include panels when centering spanning axis labels and super titles, pass includepanels=True to Figure.

import proplot as plot
f, axs = plot.subplots(axwidth=1.2, nrows=2, ncols=2, share=0)
# Panels never interfere with subplot layout and spacing
for ax, side in zip(axs, 'tlbr'):
    title='Title', suptitle='Panel axes demo', collabels=['Column 1', 'Column 2'],
    abcloc='ul', titleloc='uc', xlabel='xlabel', ylabel='ylabel', abc=True, top=False
    xlim=(0, 1), ylim=(0, 1),
    ylocator=plot.arange(0.2, 0.8, 0.2),
    xlocator=plot.arange(0.2, 0.8, 0.2)
/home/docs/checkouts/ ProPlotWarning: Rebuilding font cache.
import proplot as plot
import numpy as np
state = np.random.RandomState(51423)
data = (state.rand(20, 20)-0.1).cumsum(axis=1)
# Stacked panels with outer colorbars
f, axs = plot.subplots(
    axwidth=1.5, nrows=2, ncols=2,
    share=0, panelpad=0.1, includepanels=True
maxs = axs.panel('r', space=0)
saxs = axs.panel('r', space=0, share=False)
axs.format(xlabel='xlabel', ylabel='ylabel', suptitle='Panel axes demo')
for i, ax in enumerate(axs):
    ax.format(title=f'Dataset {i+1}')
    data, cmap='glacial', levels=plot.arange(-1, 11),
    colorbar='b', colorbar_kw={'label': 'colorbar'}, extend='both'
maxs.plot(data.mean(axis=1), np.arange(20), color='gray7')
saxs.plot(data.std(axis=1), np.arange(20), color='gray7', ls='--')

Inset axes

Inset axes can be generated with the inset or inset_axes command. The resulting axes are instances of XYAxes, and therefore can be modified with the format command.

Passing zoom=True to inset draws “zoom indication” lines with indicate_inset_zoom, and ProPlot automatically updates the lines when the axis limits of the parent axes change. To modify the line properties, simply use the zoom_kw argument.

import proplot as plot
import numpy as np
N = 20
# Inset axes representing a "zoom"
state = np.random.RandomState(51423)
f, ax = plot.subplots()
x, y = np.arange(10), np.arange(10)
data = state.rand(10, 10)
m = ax.pcolormesh(data, cmap='Grays', levels=N)
ax.colorbar(m, loc='b', label='label')
ax.format(xlabel='xlabel', ylabel='ylabel')
axi = ax.inset(
    [5, 5, 4, 4], transform='data', zoom=True,
    zoom_kw={'color': 'red', 'lw': 2}
    xlim=(2, 4), ylim=(2, 4), color='red',
    linewidth=1.5, ticklabelweight='bold'
axi.pcolormesh(data, cmap='Grays', levels=N)
ax.format(suptitle='Inset axes demo')