Mailman 3 July 2019 - Matplotlib-users

Is the Keyword Argument 'transform' of PathPatch Deprecated?
by Amit Yaron July 31, 2019

July 31, 2019

It makes actors disappear ,but when I use 'transform_path' it works fine. Following is an example code snippet: theta=np.arcsin(0.6) trans=transforms.Affine2D().rotate_around(76.5,32.5,theta)#.transform_path(textPath5) pathPatch=patches.PathPatch(textPath5,alpha=1,transform=trans); Thanks, Amit

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Interaction of matplotlib with ipython (not notebook)
by Neal Becker July 30, 2019

July 30, 2019

I'm using ipython under emacs python (M-x run-python) ipython arranges that plt.show() does nothing (does not pause). Sometimes I want that, but sometimes I don't (e.g., my program is going to generate an infinite number of plots). How can I stop ipython from disabling plt.show() from pausing? On a related note, I may want to save the figure output rather than drawing to the screen. When run under ipython, figures are drawn to the screen as well as saved if savefig is used, or, same problem with from mplcairo.multipage import MultiPage cm = MultiPage('best_circles_after.pdf') with cm as pdf: .... anyone know how to prevent from drawing to the screen in this case? Thanks, Neal

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hatching gets covered by contourf
by Mustapha Adamu July 28, 2019

July 28, 2019

I have 2 arrays arr1 contains correlation values of between -1 to 1 arr2 contains nans and 1's but same shape as arr1 arr1 = 180 * 360 arr2 = 180 * 360 I want to plot arr2 on arr1 as a hatch like this plt.contourf(lon,lat,arr1) plt.pcolor(lon,lat, arr2, hatch = '...', alpha=0) the problem here is that some of the colors in the hatched are covered by the contour plot of arr1 How can I make the hatches apear on top without being blocked by the contours of arr1 sincerely *Mustapha Adamu*

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Help request serila data plot, Ubuntu 18
by Animatore. TRPS03000X July 15, 2019

July 15, 2019

Dear matplot users, I have installed Ubuntu 18 on my computer and Matplotlib, I use it to graph position vs. time of moving objects by serial data. The python script is the following: import matplotlib matplotlib.use("Qt5Agg") import numpy as np import matplotlib.pyplot as plt import matplotlib.animation as animation from time import sleep import serial import time fine="c" pre="ciao" while (fine != "f"): raw_input("\n\n\n Premi Enter per far partire la registrazione dei dati") xdata, ydata = [], [] ser = serial.Serial('/dev/ttyACM0', 9600) while (False): pre=ser.readline() pre=ser.readline() prec = float(pre) y=prec fig, ax = plt.subplots() line, = ax.plot([], [], lw=2) ax.set_ylim(0, 90) ax.set_xlim(0, 10) ax.grid() def data_gen(): t=0 y=0 cnt=0 p=0 a = ser.readline() while (True)&(t < 10): a = ser.readline() y = float(a) if (y != 0) : t = (time.time() - start) t = float(t) yield t, y def run(data): t,y = data xdata.append(t) ydata.append(y) ax.figure.canvas.draw() line.set_data(xdata, ydata) return line, data_gen.t = 0 while (abs(y-prec) < 2): if True: a = ser.readline() y = float(a) start = time.time() ani = animation.FuncAnimation(fig, run, data_gen, blit=True, interval=5,repeat=False) plt.show() stop =0 fine=raw_input("Premi f per finire :") It works fine, but after the plotting (10 seconds), there is a problem, I cannnot use the tools of the matplot window, i.e. when I try to zoom, after selecting the area, the plot desappear. Can you help me?

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REL: Matplotlib 3.1.1
by Paul Ivanov July 3, 2019

July 3, 2019

Hi everyone, We are happy to announce the release of Matplotlib 3.1.1! Matplotlib 3.1.1 supports Python 3.6+. This is mostly a bug-fix release, with one API change involving Locator.nonsingular return order. Locator.nonsingular (introduced in matplotlib 3.1.0) now returns a range v0, v1 with v0 <= v1. This behavior is consistent with the implementation of nonsingular by the LogLocator and LogitLocator subclasses. Thanks to everyone who contributed to this release, including 29 folks and one robot who worked together to get 120 pull requests in [1], as well as all the amazing users who reported and raised the issues in the first place. Also a personal thank you to the matplotlib developers who were patient with me making my first solo release. I promise I'll be faster the next go around. :) best, pi 1. https://matplotlib.org/users/github_stats.html -- _ / \ A* \^ - ,./ _.`\\ / \ / ,--.S \/ \ / `"~,_ \ \ __o ? _ \<,_ /:\ --(_)/-(_)----.../ | \ --------------.......J Paul Ivanov https://pirsquared.org <http://pirsquared.org> | GPG/PGP key id: 0x0F3E28F7

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