# [X-Stackoverflow] Sequence logos using matplotlib: transforming xticks

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## [X-Stackoverflow] Sequence logos using matplotlib: transforming xticks

 I asked this question on stackoverflow and thought it would make sense to post it here as well:Thanks,Saket _______________________________________________ Matplotlib-users mailing list [hidden email] https://mail.python.org/mailman/listinfo/matplotlib-users
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## physical size of plot

 Hello, I use python(3.6)+numpy+matplotlib(2.0) (Anaconda distribution under Win7) to draw simple figures and I meet the following problem. All the figures that I plot come out the same size (432x288 px). This is OK for simple curves but leads to obscure plots in more complicated cases. I notice that all figures in the pyplot tutorial have size 550x450 as they do also in the Matplotlib examples, while many figures in the gallery are 165x135. How canI force the size of a picture in order to display it full screen or to cover most of anA4 sheet of paper ? Thank you for your help JP Grivet --- L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast. https://www.avast.com/antivirus_______________________________________________ Matplotlib-users mailing list [hidden email] https://mail.python.org/mailman/listinfo/matplotlib-users
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## Re: physical size of plot

 Hello Jean-Philippe, you can use the `figsize` keyword argument when creating a figure to set its size in inches (1 in = 2.54 cm). You can also set the DPI value directly with the `dpi` argument. Or you can wait until saving the figure: the keyword argument is the same. For example ```python import matplotlib.pyplot as plt # Set the dimensions that you want in inches, # here let's say a quarter of a A4 sheet. a4_sheet = (21.0, 29.7)  # in cm my_size = [0.5*val/2.54 for val in a4_sheet]  # converted in inches fig, ax = plt.subplots(figsize=my_size)  # one could add 'dpi=300' ax.plot([0, 1, 2], [1, 2, 0])  # dummy plot # Saving with a specific dot-per-inch (dpi) value, here 300 # Given my_size, the final picture should be ~ 1240x1754 fig.savefig('my_figure_in_300_dpi.png', dpi=300) ``` You may find more details in the online documentation: - [pyplot.figure](http://matplotlib.org/api/pyplot_api.html?highlight=figure#matplotlib.pyplot.figure) - [pyplot.savefig](http://matplotlib.org/api/pyplot_api.html?highlight=savefig#matplotlib.pyplot.savefig) I hope this helps. Regards Adrien PS: the figure size that you report is a bit surprising. The 2.0 defaults are expected to produce 640×480 pixel-pictures (if I am not wrong). On 08/03/2017 15:19, Jean-Philippe Grivet wrote: > Hello, > > I use python(3.6)+numpy+matplotlib(2.0) (Anaconda distribution under > Win7) to draw simple figures and I meet the following problem. All the > figures that I plot come out the same size (432x288 px). This is OK for > simple curves but leads to obscure plots in more complicated cases. > I notice that all figures in the pyplot tutorial have size 550x450 as > they do also in the Matplotlib examples, while many figures in the > gallery are 165x135. > > How canI force the size of a picture in order to display it full screen > or to cover most of anA4 sheet of paper ? > > Thank you for your help > JP Grivet > > > --- > L'absence de virus dans ce courrier électronique a été vérifiée par le > logiciel antivirus Avast. > https://www.avast.com/antivirus> > _______________________________________________ > Matplotlib-users mailing list > [hidden email] > https://mail.python.org/mailman/listinfo/matplotlib-users_______________________________________________ Matplotlib-users mailing list [hidden email] https://mail.python.org/mailman/listinfo/matplotlib-users