Adding a background image to a plot

by

Use the extent keyword of imshow. The order of the argument is [left, right, bottom, top]

import numpy as np
import matplotlib.pyplot as plt

np.random.seed(0)
x = np.random.uniform(0.0,10.0,15)
y = np.random.uniform(0.0,10.0,15)

datafile="lena.jpg"
img = plt.imread(datafile)
plt.scatter(x,y,zorder=1)
plt.imshow(img, zorder=0, extent=[0.5, 8.0, 1.0, 7.0])
plt.show()

enter image description here

  • For cases where it’s desired to have an image in a small area of the scatter plot, change the order of the plots (.imshow then .scatter) and change the extent values.
plt.imshow(img, zorder=0, extent=[3.0, 5.0, 3.0, 4.50])
plt.scatter(x, y, zorder=1)
plt.show()

enter image description here

More Related Contents:

  1. Plot a function in python
  2. surface plots in matplotlib
  3. Histogram Matplotlib
  4. Why does pyplot.contour() require Z to be a 2D array?
  5. How to create a density plot in matplotlib?
  6. Fitting a Normal distribution to 1D data
  7. how to handle an asymptote/discontinuity with Matplotlib
  8. Problem in combining bar plot and line plot (python)
  9. How to plot data from multiple two column text files with legends in Matplotlib?
  10. Matplotlib runs out of memory when plotting in a loop
  11. How to plot line (polygonal chain) with numpy/scipy/matplotlib with minimal smoothing
  12. Matplotlib: how to make imshow read x,y coordinates from other numpy arrays?
  13. Pythonic way of detecting outliers in one dimensional observation data
  14. Polar contour plot in matplotlib – best (modern) way to do it?
  15. ‘invalid value encountered in double_scalars’ warning, possibly numpy
  16. How to fix ‘numpy.ndarray’ object has no attribute ‘get_figure’ when plotting subplots
  17. How to update matplotlib’s imshow() window interactively?
  18. Creating a Confidence Ellipsis in a scatterplot using matplotlib
  19. Using datetime as ticks in Matplotlib
  20. Plot the x-axis as a date
  21. Axes from plt.subplots() is a “numpy.ndarray” object and has no attribute “plot”
  22. plotting a histogram on a Log scale with Matplotlib
  23. How to center labels in histogram plot
  24. Adding colors to a 3d quiver plot in matplotlib
  25. How to have logarithmic bins in a Python histogram
  26. How to shade region under the curve in matplotlib
  27. Extract csv file specific columns to list in Python
  28. Figure to image as a numpy array
  29. Annotate Time Series plot
  30. ValueError: x and y must be the same size

Leave a Comment