Mailman 3 July 2017 - Matplotlib-users

Windows7: figure window "not responding"
by Strozzi, David J. Oct. 9, 2017

Oct. 9, 2017

This problem has been driving me nuts, posted it elsewhere, so far no one's been able to help. I am running Python 3.6.1 from Anaconda (all packages updated to latest and greatest) on Windows 7. ipython and mpl figure windows work fine from a console, or spyder. The problem is when I try running ipython within emacs using elpy. To back up, the workflow I'm shooting for is using emacs as my IDE, and running python within emacs. I've done this for many years with the Yorick interpreter, and it's quite addictive. I get the same problem whether I use the GNU windows build of emacs, or emacs -nw (terminal, no X) from cygwin (ver 25.2 both cases). elpy seems to be a good Python package for emacs, and nominally supports using ipython. OK, so - I can use ipython + emacs + elpy. The only problem is matplotlib figures. When I do figure(), a figure window appears, but is not fully rendered (e.g. no buttons), and the window title says "Not responding". If I do a plot(), nothing is plotted. Playing with ion() and show() doesn't help. I've posted this on the elpy github, various stackexchange forums, no one has had any ideas yet. Any help is greatly appreciated! Dave

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Single Colorbar for multiple subplots
by danjames95 Aug. 8, 2017

Aug. 8, 2017

Hi, I am trying to plot 4 subplots in a 2 by 2 grid for mean sea level pressure data over the four seasons. I have managed to plot all four in the same figure with their own individual colorbars, however, I would ideally like the figure to display one colorbar at the bottom to represent all four figures and I have been unsuccessful in doing this so far. There have been a few posts on this but as this is my first assignment (i'm a student at university) with python, I'm struggling to understand the answers! The section of my code which involves the plotting of data is as follows: ... #Select Projection lon_0= 0 lat_0=lats.mean() m = Basemap(projection = 'cyl', lat_0=lat_0, lon_0=lon_0, resolution = 'l') #Convert Lons and Lats x,y = np.meshgrid (lons_shifted,lats) xx,yy= m(x,y) v = np.linspace(980, 1030, 11, endpoint=True) fig = plt.figure() plt.subplot(2, 2, 1) set1 = m.contourf(xx,yy,MSLP_WINTER, v) m.drawmapboundary() m.drawcoastlines() plt.title('Winter') bar = plt.colorbar(orientation = 'horizontal', ticks = v, format = '%.0f') plt.xlim(-80,20) plt.ylim (20,70) plt.subplot(2, 2, 2) set2 = m.contourf(xx,yy,MSLP_SPRING, v) m.drawmapboundary() m.drawcoastlines() plt.title('Spring') bar = plt.colorbar(orientation = 'horizontal', ticks = v) plt.xlim(-80,20) plt.ylim (20,70) plt.subplot(2, 2, 3) set3 = m.contourf(xx,yy,MSLP_SUMMER, v) m.drawmapboundary() m.drawcoastlines() plt.title('Summer') bar = plt.colorbar(orientation = 'horizontal', ticks = v) plt.xlim(-80,20) plt.ylim (20,70) plt.subplot(2, 2, 4) set4 = m.contourf(xx,yy,MSLP_AUTUMN, v) m.drawmapboundary() m.drawcoastlines() plt.title('Autumn') bar = plt.colorbar(orientation = 'horizontal', ticks = v) plt.xlim(-80,20) plt.ylim (20,70) plt.suptitle("Seasonally Averaged Mean Sea Level Pressure between 2006 to 2016") plt.show() This creates the following image: <http://matplotlib.1069221.n5.nabble.com/file/n48091/MSLP_Seasonal_Averages.…> Any help would be very much appreciated. Also, if there any obvious bad habits within this code, please feel free to point them out! Thanks, Dan -- View this message in context: http://matplotlib.1069221.n5.nabble.com/Single-Colorbar-for-multiple-subplo… Sent from the matplotlib - users mailing list archive at Nabble.com.

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Plot of array of shape (N, N, N) in form of sphere
by cdpnepal Aug. 7, 2017

Aug. 7, 2017

Dear All, I have an array of shape (N,N,N) of intensity values. How can I plot those intensity values in form of sphere. Can I show a cut of quadrant of that sphere, so that I can visualize intensity not only on the surface but also inside the sphere. Thanks -- View this message in context: http://matplotlib.1069221.n5.nabble.com/Plot-of-array-of-shape-N-N-N-in-for… Sent from the matplotlib - users mailing list archive at Nabble.com.

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animation in thread
by arash Aug. 7, 2017

Aug. 7, 2017

I am new to matplotlib and I am trying to get started with animation library.There is an example here for a simple strip chart:https://matplotlib.org/examples/animation/strip_chart_demo.htmlI tried to use this example in a thread. I created a simple *threading.Thread* class, and in it's* run() *method, called:ani = animation.FuncAnimation(fig, scope.update, emitter, interval=10,True)plt.show()here is class:class graph(threading.Thread): def __init__(self, feeder): threading.Thread.__init__(self) self.fig, self.ax = plt.subplots() self.scope = Scope(self.ax) self.feeder=feeder self.running=True def run(self): while self.running: ani = animation.FuncAnimation(self.fig, self.scope.update, self.feeder.emit_ch1(), interval=1, blit=True) plt.show() but when I start this thread, it never shows the windows. Isn't this right usage? -- View this message in context: http://matplotlib.1069221.n5.nabble.com/animation-in-thread-tp48055.html Sent from the matplotlib - users mailing list archive at Nabble.com.

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Problem of memory leak using FigureCanvasTkAgg
by GARCIA PIERRE SIMON p0904379 Aug. 7, 2017

Aug. 7, 2017

Hello, I'm PhD student in Bioinformatic and I'm working on a project using matplotlib and Tkinter but I've got a big problem of memory leak using these modules. I'll be very grateful if you could help me to solve this problem. Here is the link explaining what happends, with a reduced script: http://stackoverflow.com/questions/43097378/matplotlib-vs-tkinter-memory-le… Thank you in advance, Sincerly, Pierre Garcia, PhD Student --------- Bases Moléculaires et Structurales des Systèmes infectieux-UMR5086 Institut de Biologie et Chimie des Protéines 7 passage du Vercors 69 367 Lyon cedex 07 --------- Laboratoire de Biométrie et Biologie Evolutive-UMR5558 UCBL Lyon 1 -Bât. Grégory Mendel 43 bd du 11 novembre 1918 69622 VILLEURBANNE cedex

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GEOS installation for Basemap package
by Ahlam Al Qasim Aug. 7, 2017

Aug. 7, 2017

To whom it may concern, I hope this email finds you well. I am trying to get the Basemap package on my mac, and have been following the instructions based on this webpage: https://matplotlib.org/basemap/users/installing.html. I don't have GEOS already installed so I tried following steps on the website to download it with Basemap: cd geos-3.3.3 export GEOS_DIR=<where you want the libs and headers to go> # A reasonable choice on a Unix-like system is /usr/local, or # if you don't have permission to write there, your home directory. ./configure --prefix=$GEOS_DIR make; make install However, I am getting errors at the third step (make; make install). Attached is a copy of what I get on my python console, if it helps. I think the error occurs when trying to create the /include directory, but I'm not sure how to fix it. I'm still new to python so any help would be much appreciated! Best regards, Ahlam Al Qasim

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Building matplotlib on PyPy
by Mihnea Saracin Aug. 7, 2017

Aug. 7, 2017

Hello everyone, I have recently managed to make Matplotlib work with PyPy 5.8.0 through CFFI bindings. I posted a step by step tutorial for this if anyone is interested: https://pythonfiles.wordpress.com/2017/06/28/making-matplotlib-work-with-py… Best regards, Mihnea <https://pythonfiles.wordpress.com/2017/06/28/making-matplotlib-work-with-py…>

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showcase example code: bachelors_degrees_by_gender.py Inbox x
by Chris Barnes Aug. 7, 2017

Aug. 7, 2017

Good morning- I came across you data <https://matplotlib.org/examples/showcase/bachelors_degrees_by_gender.html>linked on Reddit this morning, and found it fascinating. I'm a high school history teacher, and "college" and "degrees" is very important and relevant to my classroom studies. Any chance you have any data similar to the one above...but only for men? Just thought I'd ask. Thanks! -Chris Barnes

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Plotting dates on the y-axis of a contour map/ hovmoller
by vaultron94 Aug. 7, 2017

Aug. 7, 2017

Hello all, So I ran into a snare when making a Hovmoller for a case study. I have everything done and colors picked out. But for the life of me cannot find a way to get the Y-axis to plot the dates provided in the data. Here is the script I have. import numpy as np import datetime import matplotlib.pyplot as plt import os import pandas as pd def cmap(cmap): cmap = plt.cm.get_cmap(cmap) data = pd.read_excel('/Users/operator/Documents/Hovmoller_dewpt.xlsx') a=np.array(data) time= (a[:,0]) lat= (a[:,1]) lon= (a[:,2]) BATA= (a[:,3]) BSPA= (a[:,4]) BUFF= (a[:,5]) CLIF= (a[:,6]) FAYE= (a[:,7]) HERK= (a[:,8]) JOHN= (a[:,9]) JORD= (a[:,10]) OPPE= (a[:,11]) WEST= (a[:,12]) timeZ= (a[:,13]) b=np.vstack((BUFF,BATA,CLIF,JORD,FAYE,WEST,HERK,OPPE,JOHN,BSPA)).T plt.contourf(b, np.arange(40,67), cmap=('jet')) plt.xlabel('BUFF BATA CLIF JORD FAYE WEST HERK OPPE JOHN BSPA') plt.ylabel('Time') plt.grid('off') plt.colorbar() plt.title('Dewpoint Hovmoller for Mesonet Sites') plt.figure() #timeZ contains the dates I want, and instead of having the number of rows as the y axis I want the dates there instead. Attached is the graphic I get as of now. Any thoughts or advice is much appreciated! Thank you <http://matplotlib.1069221.n5.nabble.com/file/n48081/DewPoint.png> -- View this message in context: http://matplotlib.1069221.n5.nabble.com/Plotting-dates-on-the-y-axis-of-a-c… Sent from the matplotlib - users mailing list archive at Nabble.com.

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Contourplots
by szymonzaczek Aug. 7, 2017

Aug. 7, 2017

Hey guys, I want to create a contour plot using Python and most likely matplot library that would somehow resemble this one made in Origin: pmf.tif <http://matplotlib.1069221.n5.nabble.com/file/n48076/pmf.tif> basing on this excel sheet: pmf.xlsx <http://matplotlib.1069221.n5.nabble.com/file/n48076/pmf.xlsx> . I am new to Python. I know some of the basics, I am capable of creating histograms and scatterplots, though contourplots have utterly defeated me so far. Therefore, any kind of assistance would be much appreciated. How would you, experienced users, address this issue? Kind regards, Szymon Zaczek -- View this message in context: http://matplotlib.1069221.n5.nabble.com/Contourplots-tp48076.html Sent from the matplotlib - users mailing list archive at Nabble.com.

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