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import numpy as np

import matplotlib.pyplot as plt

def set_3daxes_equal(ax):

'''Make axes of 3D plot have equal scale so that spheres appear as spheres,

cubes as cubes, etc.. This is one possible solution to Matplotlib's

ax.set_aspect('equal') and ax.axis('equal') not working for 3D.

Input

ax: a matplotlib axis, e.g., as output from plt.gca().

Inspired by https://stackoverflow.com/a/50664367/5760230

'''

limits = np.array([getattr(ax, "get_%slim" % s)() for s in 'xyz'])

origin = np.mean(limits, axis=1)

radius = 0.5 * np.max(np.abs(limits[:, 1] - limits[:, 0]))

[getattr(ax, "set_%slim" % s)([origin[i] - radius, origin[i] + radius]) for i, s in enumerate('xyz')]

def named(name=""):

ret = plt.figure(name)

plt.title(name)

return ret

def namedt(name=""):

ret = named(name)

plt.xlabel("Time (s)")

return ret

def hline(y, **kwargs):

ax = plt.gca()

ax.axhline(y, **kwargs)

def vline(x, **kwargs):

ax = plt.gca()

ax.axvline(x, **kwargs)

def defcolors():

return plt.rcParams["axes.prop_cycle"].by_key()['color']

def dedup_legend(ax=None, **kwargs):

""" https://stackoverflow.com/questions/13588920/stop-matplotlib-repeating-labels-in-legend """

if ax is None:

ax = plt.gca()

if 'handles' in kwargs or 'labels' in kwargs:

return ax.legend(**kwargs)

handles, labels = ax.get_legend_handles_labels()

by_label = dict(zip(labels, handles))

return ax.legend(handles=by_label.values(), labels=by_label.keys(), **kwargs)

def simpleplot(times, data, yname="", title="", **kwargs):

namedt(title)

plt.plot(times, data, **kwargs)

plt.ylabel(yname)

if 'label' in kwargs:

plt.legend()

def subplot(times, data, yname="", title="", **kwargs):

plt.figure(title)

if len(data.shape) <= 1:

simpleplot(times, data, yname, title, **kwargs)

else:

n_dims = data.shape[1]

for i in range(n_dims):

plt.subplot(n_dims * 100 + 11 + i)

if not i: plt.title(title)

plt.plot(times, data[:, i], **kwargs)

ax_id = 'XYZ'[i] if i < 3 else str(i)

plt.ylabel("%s %s" % (ax_id, yname))

plt.xlabel("Time (s)")

if 'label' in kwargs:

plt.legend()

class Plot:

def __init__(self, title=None, xt=None, yt=None, **kwargs):

self.fig = plt.figure(**kwargs)

self.ax = plt.gca()

if xt is not None:

self.ax.set_xlabel(str(xt))

if yt is not None:

self.ax.set_ylabel(str(yt))

if title is not None:

self.ax.set_title(title)

def add(self, times, data, *args, **kwargs):

return self.ax.plot(times, data, *args, **kwargs)

def __getattr__(self, f, *args, **kwargs):

if f.startswith("set_"):

return getattr(self.ax, f)

class PlotBase:

def show(self, **kwargs):

plt.show(**kwargs)

def tight_layout(self, **kwargs):

self.fig.tight_layout(**kwargs)

class Plot3D(PlotBase):

def __init__(self, title=None, xt=None, yt=None, zt=None, **kwargs):

self.fig = plt.figure(**kwargs)

self.ax = plt.axes(projection='3d')

if xt is not None:

self.ax.set_xlabel(str(xt))

if yt is not None:

self.ax.set_ylabel(str(yt))

if yt is not None:

self.ax.set_zlabel(str(zt))

if title is not None:

self.fig.canvas.manager.set_window_title(title)

self.ax.set_title(title)

def add(self, data, *args, **kwargs):

return self.ax.plot(data[:, 0], data[:, 1], zs=data[:, 2], *args, **kwargs)

def __getattr__(self, f, *args, **kwargs):

if f.startswith("set_"):

return getattr(self.ax, f)

def legend(self, **kwargs):

return dedup_legend(self.ax, **kwargs)

def axis_equal(self):

return set_3daxes_equal(self.ax)

class Subplot(PlotBase):

def __init__(self, title=None, xt=None, yt=None, fontsize=None, rows=None, **kwargs):

self.title = title

self.xt = xt

self.yt = yt

self.fontsize = fontsize

self.kwargs = kwargs

self.fig = None

self.axs = None

if rows is not None:

assert rows < 20

self._create_fig(rows, 1)

passalongs = [

'axvline',

'axhline',

'axvspan',

'axhspan',

'get_xlim',

'get_ylim',

'grid',

'set_aspect',

'set_xlim',

'set_ylim',

'set_xticks',

'set_yticks',

'set_xticklabels',

'set_yticklabels',

]

fig_passalongs = [

'align_labels',

'savefig',

'subplots_adjust',

]

for methodname in passalongs:

def f(m=methodname):

def proxy(*args, **kwargs):

return self._map_method(m, *args, **kwargs)

return proxy

setattr(self, methodname, f(methodname))

for methodname in fig_passalongs:

def f(m=methodname):

def proxy(*args, **kwargs):

if self.fig is None:

return

return getattr(self.fig, m)(*args, **kwargs)

return proxy

setattr(self, methodname, f(methodname))

def _create_fig(self, rows, cols):

self.fig, self.axs = plt.subplots(rows, cols, **self.kwargs)

if rows == 1:

self.axs = [self.axs]

if self.title is not None:

self.fig.canvas.manager.set_window_title(self.title)

params = dict()

if self.fontsize is not None:

params.update(fontsize=self.fontsize)

self.axs[0].set_title(self.title, **params)

if self.yt is not None:

for i, ax in enumerate(self.axs):

if type(self.yt) in (list, tuple):

if i >= len(self.yt):

break

lab = self.yt[i]

else:

lab = self.yt

ax.set_ylabel(str(lab))

if self.xt is not None:

self.axs[-1].set_xlabel(str(self.xt))

def add(self, times, data, *args, **kwargs):

if type(data) is not np.ndarray:

data = np.array(data)

assert len(data.shape) <= 2

if len(data.shape) == 1:

data = data[:, np.newaxis]

rows = data.shape[1]

assert rows < 20

if self.fig is None:

self._create_fig(rows, 1)

assert rows <= len(self.axs)

rets = []

for i in range(rows):

rets.append(self.axs[i].plot(times, data[:, i], *args, **kwargs))

return rets

def legend(self, axind=-1, *args, **kwargs):

if self.axs is not None:

return dedup_legend(self.axs[axind], *args, **kwargs)

def envelope(self, times, data, radius, radiusdown=None, **kwargs):

if radiusdown is None:

radiusdown = radius

if type(data) is not np.ndarray:

data = np.array(data)

if type(radius) is not np.ndarray:

radius = np.array(radius)

if type(radiusdown) is not np.ndarray:

radiusdown = np.array(radiusdown)

if len(data.shape) == 1:

data = data[:, np.newaxis]

assert len(self.axs) == data.shape[1]

for i in range(len(self.axs)):

if len(radius.shape) == 1:

rad = radius

else:

rad = radius[:, i]

if len(radiusdown.shape) == 1:

raddown = radiusdown

else:

raddown = radiusdown[:, i]

self.axs[i].fill_between(times, data[:, i] - raddown, data[:, i] + rad, **kwargs)

def _map_method(self, methodname, *args, **kwargs):

if self.axs is None:

return

return [getattr(ax, methodname)(*args, **kwargs) for ax in self.axs]

show = plt.show