Closed
Description
Bug report
Hi,
I have a notebook that allows to draw geometrical shapes using mouse, and buttons from matplotlib.widgets.
After upgrade from matplotlib 3.1.1 to 3.3.1, my interactive plot has become excruciatingly slow.
It used to work fine with "%matplotlib notebook" under matplotlib 3.3.1.
Accessorily, %matplotlib notebook works for me only in chrome with 3.3.1, not firefox anymore.
However, the code works with also with "%matplotlib widgets" and "%matplotlib ipympl"
on both firefox and chrome, but it is slow in all cases with version matplotlib 3.3.1.
I can revert to matplotlib 3.1.1 but that considerably restricts my options due to lack of compatibility with other modules I'd like to use jointly (in particular pygimli).
Any help appreciated
Code for reproduction
# Paste your code here
####
# Here is the code example. This is what it does:
# allows to draw polygons with mouse clicks
# automatically labels the polygons each time "next poly" button is clicked
# allows to delete any of the polygons by specifying the label in inteactive text box and clickin g butto "delete poly"
####
# first, import modules:
import numpy as np
%matplotlib notebook
import matplotlib.pyplot as plt
from matplotlib.widgets import Button, TextBox
from operator import itemgetter
##################
# second, define a few functions:
def onclick2(event):
global pos
if event.inaxes in [ax1] and event.button == 1:
ax1.text(event.xdata, event.ydata, 'o', color='r', weight='bold',\
horizontalalignment='center',verticalalignment='center');
pos.append([event.xdata,event.ydata])
#ax1.set_title('%.1f' % pos[-1:][0][0] + ',' + '%.1f' % pos[-1:][0][1])
def f_next(event):
global pos,apos,pop,axpos,aypos,axposp,ayposp
if event.inaxes in [ax_next] and event.button == 1:
pop = np.array(pos).T.tolist()
pos=[]
axpos.append(pop[0])
aypos.append(pop[1])
ax1.clear()
ax1.set_xlim(left,right);ax1.set_ylim(bottom,top)
f_replot()
def f_delone(event):
global axpos,aypos
if event.inaxes in [ax_delone] and event.button == 1:
del axpos[ddata-1]
del aypos[ddata-1]
f_replot()
pos=[]
def getx(lst):
xx=list(map(itemgetter(0), lst))
return(xx)
def gety(lst):
yy=list(map(itemgetter(1), lst))
return(yy)
def f_replot():
ax1.clear()
ax1.set_xlim(left,right);ax1.set_ylim(bottom,top)
for ii in range(len(axpos)):
ax1.plot(axpos[ii],aypos[ii],'o');
ax1.plot(axpos[ii] + [axpos[ii][0]],aypos[ii] + [aypos[ii][0]],'-');
ax1.text(axpos[ii][0],aypos[ii][0], str(1+ii));
for ii in range(len(layers)):
ax1.plot(getx(layers[ii]),gety(layers[ii]),'-')
def f_plotlayers():
ax1.set_xlim(left,right);ax1.set_ylim(bottom,top)
for ii in range(len(layers)):
ax1.plot(getx(layers[ii]),gety(layers[ii]),'-')
def f_textbox(text):
global ddata
ddata = int(text)
def all_buttons():
global ax_next,ax_delall,ax_texbox,ax_delone,ax_save,ax_read,ax_filename
global b_next, b_delall, b_textbox, b_delone, b_save, b_filename, b_read
ax_next = fig0.add_axes([0.10, 0.07+0.2*hi+.5, 0.1, 0.075])
ax_textbox = fig0.add_axes([0.5,0.07+0.2*hi+.5,0.08,0.075])
ax_delone = fig0.add_axes([0.5,0.07+0.11*hi+.5,0.08,0.075])
#
b_next = Button(ax_next, 'Next poly',hovercolor='green')
b_next.on_clicked(f_next)
b_textbox = TextBox(ax_textbox, 'Del. nr:', initial=" ")
b_textbox.on_text_change(f_textbox)
b_delone = Button(ax_delone, 'Del poly', hovercolor='red')
b_delone.on_clicked(f_delone)
###############################################
# third, construct a plot and launch the interaction, by calling "all_buttons() and mpl_connect with "onclick2":
top=10;bottom=-60;left=0;right=256;# model size
layers=[]
# First "layer" is topography [[x0,y0], [x1,y1], ... [xn,yn]] i.e., flat horizontal [[0,0],[333,0]]:
layers.append([[0,0],[50,0],[60,3],[67,4],[70,3],[73,0],[256,0]])
# add as many layers as needed, or none. Negative is down:
layers.append([[0,-20],[256,-20]])
layers.append([[0,-30],[256,-50]])
mle=max([top-bottom,left-right])
hi=(top-bottom)/mle
wi=(right-left)/mle
pos=[]; mona='m_tmp.csv'
fig0 = plt.figure(figsize=(8,4));
ax1 = fig0.add_axes([0.07, 0.07, 0.2*wi, 0.2*hi*2]) #[left bottom width height]
ax1.set_xlim(left,right);ax1.set_ylim(bottom,top)
all_buttons()
f_plotlayers()
if 'axpos' in globals():
for i in range(len(axpos)):
f_replot()
else:
axpos=[]; aypos=[];
#
cid=fig0.canvas.mpl_connect('button_press_event', onclick2)
#
###########################Actual outcome
# If applicable, paste the console output here
#
#
Expected outcome
Matplotlib version
matplotlib 3.1.1
- Operating system: linux mint
- Matplotlib version: 3.3.1
- Matplotlib backend (
print(matplotlib.get_backend())): nbAgg - Python version: 3.7.8
- Jupyter version (if applicable):
jupyter core : 4.6.3
jupyter-notebook : 6.1.4
qtconsole : 4.7.5
ipython : 7.17.0
ipykernel : 5.3.4
jupyter client : 6.1.6
jupyter lab : not installed
nbconvert : 5.6.1
ipywidgets : 7.5.1
nbformat : 5.0.7
traitlets : 4.3.3 - Other libraries:
installed with conda
the working environment was installed from conda. Channels are:
- gimli
- anaconda
- conda-forge
- defaults
######################################################
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