Mailman 3 June 2019 - Matplotlib-users

Matplotlib unable to plot on my windows 8.1 machine.
by henryekene June 26, 2019

June 26, 2019

I have installed the latest version of matplotlib but it's unable to plot. Below is the error message, please help: Traceback (most recent call last): File "C:/Users/Physics department/Desktop/Python_programs/2d_densityplot.py", line 2, in <module> import matplotlib.pyplot as plt File "C:\Python36\lib\site-packages\matplotlib\__init__.py", line 200, in <module> _check_versions() File "C:\Python36\lib\site-packages\matplotlib\__init__.py", line 194, in _check_versions module = importlib.import_module(modname) File "C:\Python36\lib\importlib\__init__.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) ImportError: DLL load failed: The specified module could not be found. >>> -- Sent from: http://matplotlib.1069221.n5.nabble.com/matplotlib-users-f3.html

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Problems with the arrow head size in 3D
by 谢瑾博 June 20, 2019

June 20, 2019

Hi everyone, I have been trying to draw the topo with arrow head shown as follow. However, for a typical topo (1000~6000), the arrow head will not show, and show a line only. This size of the arrow head seems to be sensitive to the range of the Z axis (as in the second picture, the head shows better when range is 1~5). I wonder if there is a set source to tune the size of the arrow head? yours, Jinbo

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about moving labels closer to coordinate in 3D plotting
by 谢瑾博 June 19, 2019

June 19, 2019

Hi Everyone, I have a problem trying to set the X and Y label closer to the coordinate. I have ax.xaxis.set_ticks_position('top'),ax.yaxis.set_ticks_position('top') so that the ticks are close to the coordinate. As for the labels, I have tried ax.xaxis.set_label_position('bottom') ax.xaxis.set_label_position('top'), but neither seems to move the labels closer, is there any way to move it closer to the coordinates? yours, Jinbo

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Problem with matplotlib
by Nuria Gombao June 18, 2019

June 18, 2019

Dear Matplotlib, First of all I'm going to provide the information that you required. Operating system: Windows Matplotlib version: 2.0.0b4 Source of Matplotlib: Anaconda My problem is that I am trying to plot a real simple problem, but I get an error (image 1) that says: "TypeError: unbound method __init__() must be called with Affine2DBase instance as first argument (got Affine2D instance instead)" . I'm going to attached you the simple program (example_plot.py), the document where it is supossed to be the problem (transforms.py) and the image from this error (image_1). I really don't know what to do. Thanks for your help [image: image.png]

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Constant failed import
by Pierig Havez-Bodivit June 18, 2019

June 18, 2019

Hi, my name is Pierig, I’m a French student, I use python for my study but I’ve got issue with your library. I’m running it on PyCharm and Pyzo on MacOSX and while I can import your library, there's no way of using any of the module, such as : plt.figure() or plt.plot() while other libraries like numpy work. I’ve got this message: I really need your library to work, can you help me with that? Sincerely yours Pierig

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Problems with the new version
by Yaoshu Xie June 18, 2019

June 18, 2019

Dear producer My python program can be ran in an old computer with matplotlib 3.0.2 but cant go well in the new 3.1.0. Could you please kindly help me with this or give me an copy of the old 3.0.2 version? There are two jupyter notebook file in the TEST folder. You can ran them and see the problems. One is the error coming out and the other is the picture not able to be shown. Best wishes, Yaoshu Xie

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About unstructured grid plotting in 3D
by 谢瑾博 June 18, 2019

June 18, 2019

Dear Users, I am currently trying to map a grid of unstructured topography on 3D in python. The data which I am using is in 1d, where another x and y are in 1d. I see that the need for plot_surface is 2d X,Y,Z. I wonder if there is a way I can transform the data to plot for view in topography, or the plot_surface or alternative functions can be used to simply apply the 1d arrays? PS. Below is the large grid that overlays on the unstructured grid. yours, Jinbo

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Any way to add figure string for subplots
by 谢瑾博 June 17, 2019

June 17, 2019

Dear Users, I am trying to do a subplot consist of several axes like one below. My problem is that the small figure string for each subplot (a)(b)(c), if there is any resource controlling this text, or I have to some other configurations? Jinbo

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questions about changing coordinate position in 3D plotting
by 谢瑾博 June 16, 2019

June 16, 2019

Dear Users, I have a question regarding the positioning of the coordinate. As you can see in this picture, the z-coordinate is on the right edge of the figure. While my need is to put it on the left edge (another face also). I wonder how this can be achieved? yours, Jinbo

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please document imshow axes order
by Neal Becker June 6, 2019

June 6, 2019

I just wasted quite a bit of time trying to debug my code. It took a long time because I was using imshow to debug, and didn't know that imshow displays a matrix not using cartesian coordinates. The axes are transposed and one axis is reversed. The documentation doesn't mention this. Thanks, Neal

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