How to Save a Plot to a File Using Matplotlib?
Matplotlib is a widely used python library to plot graphs, plots, charts, etc. show() method is used to display graphs as output, but don’t save it in any file. To save generated graphs in a file on storage disk, savefig() method is used.
savefig() : Save the current figure.
Syntax: pyplot.savefig(fname, dpi=None, facecolor=’w’, edgecolor=’w’, orientation=’portrait’, papertype=None, format=None, transparent=False, bbox_inches=None, pad_inches=0.1, frameon=None, metadata=None)
Parameters:
- fname : path or name of output file with extension. If extension is not provided plot is saved as png file. Supported file formats: eps, jpeg, jpg, pdf, pgf, png, ps, raw, rgba, svg, svgz, tif, tiff.
- dpi : dots per inch resolution of figure
- facecolor : facecolor of figure
- edgecolor : edgecolor of figure
- orientation : landscape or portrait
- format : The file format, e.g. ‘png’, ‘pdf’, ‘svg’, etc.
- transparent : If it is True, the patches of axes will all be transparent
Steps:
- Plot a graph
- Use pyplot.savefig() method to save generated plot in a file
Example:
Python3
import matplotlib.pyplot as plt # Creating datayear = ['2010', '2002', '2004', '2006', '2008']production = [25, 15, 35, 30, 10] # Plotting barchartplt.bar(year, production) # Saving the figure.plt.savefig("output.jpg") # Saving figure by changing parameter valuesplt.savefig("output1", facecolor='y', bbox_inches="tight", pad_inches=0.3, transparent=True) |
Output:
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