Import matplotlib.pyplot as plt import matplotlib.patches as mpatches import numpy as np x = y = categories = np.array() colormap = np.array() plt.scatter(x, y, s=100, c=colormap) pop_a = mpatches.Patch(color='#0b559f', label='Population A') pop_b = mpatches.Patch(color='#89bedc', label='Population B') plt.legend(handles=) plt.title('Nuage de points avec Matplotlib') plt.xlabel('x') plt.ylabel('y') plt.savefig('ScatterPlot_10.png') plt.
#LEGEND SCATTER PLOT MATPLOTLIB CODE#
In the code below I've used random values rather. Also, if you are using scatter plots, use scatterpoints1 rather than numpoints1 in the legend call to have only one point for each legend entry.
Import matplotlib.pyplot as plt x = y = plt.scatter(x, y, c='coral', label='Class 1') x = y = plt.scatter(x, y, c='lightblue', label='Class 2') plt.legend() plt.title('Nuage de points avec Matplotlib') plt.xlabel('x') plt.ylabel('y') plt.savefig('ScatterPlot_09.png') plt.show() Add a legend to a scatter plot using "Proxy artists" Using the scatter method of the matplotlib.pyplot module should work (at least with matplotlib 1.2.1 with Python 2.7.5), as in the example code below.
#LEGEND SCATTER PLOT MATPLOTLIB HOW TO#
How to add a legend for a scatter plot in matplotlib ? You can use the following syntax to add a legend to a scatterplot in Matplotlib: import matplotlib.pyplot as plt from lors import ListedColormap define values, classes, and colors to map values 0, 0, 1, 2, 2, 2 classes 'A', 'B', 'C' colors ListedColormap ( 'red', 'blue', 'purple') create scatterplot scatter plt. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. The first legend does not contain anything, since the legendelements of scatter1 is empty. matplotlib scatter plot with color label and legend specified by c option duplicate Ask Question Asked 5 years, 4 months ago Modified 5 years, 4 months ago Viewed 108k times 31 This question already has answers here: Matplotlib scatter plot with legend (6 answers) Closed 5 years ago. Those can be passed to the call to legend. It will automatically try to determine a useful number of legend entries to be shown and return a tuple of handles and labels.
Add a legend to a scatter plot using "Proxy artists" Another option for creating a legend for a scatter is to use the PathCollection.legendelements method.
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