Plotting images side by side using matplotlib

Question

I was wondering how I am able to plot images side by side using matplotlib for example something like this     The closest I got is this     This was produced by using this code   f  axarr   plt subplots 2 2  axarr 0 0    plt imshow image datas 0   axarr 0 1    plt imshow image datas 1   axarr 1 0    plt imshow image datas 2   axarr 1 1    plt imshow image datas 3     But I can t seem to get the other images to show  I m thinking that there must be a better way to do this as I would imagine trying to manage the indexes would be a pain  I have looked through the documentation although I have a feeling I may be look at the wrong one  Would anyone be able to provide me with an example or point me in the right direction

User · Answer

If the images are in an array and you want to iterate through each element and print it, you can write the code as follows:

plt.figure(figsize=(10,10)) # specifying the overall grid size

for i in range(25):
    plt.subplot(5,5,i+1)    # the number of images in the grid is 5*5 (25)
    plt.imshow(the_array[i])

plt.show()

Also note that I used subplot and not subplots. They're both different

User · Answer

You are plotting all your images on one axis  What you want ist to get a handle for each axis individually and plot your images there  Like so   fig   plt figure   ax1   fig add subplot 2 2 1  ax1 imshow      ax2   fig add subplot 2 2 2  ax2 imshow      ax3   fig add subplot 2 2 3  ax3 imshow      ax4   fig add subplot 2 2 4  ax4 imshow        For more info have a look here  http   matplotlib org examples pylab examples subplots demo html  For complex layouts  you should consider using gridspec  http   matplotlib org users gridspec html

User · Answer

One thing that I found quite helpful to use to print all images       axs   plt subplots n row  n col  figsize  12  12   axs   axs flatten   for img  ax in zip imgs  axs       ax imshow img  plt show

User · Answer

As per matplotlib s suggestion for image grids   import matplotlib pyplot as plt from mpl toolkits axes grid1 import ImageGrid  fig   plt figure figsize  4   4    grid   ImageGrid fig  111     similar to subplot 111                   nrows ncols  2  2      creates 2x2 grid of axes                  axes pad 0 1     pad between axes in inch                      for ax  im in zip grid  image data         Iterating over the grid returns the Axes      ax imshow im   plt show

User · Answer

The problem you face is that you try to assign the return of imshow  which is an matplotlib image AxesImage to an existing axes object    The correct way of plotting image data to the different axes in axarr would be  f  axarr   plt subplots 2 2  axarr 0 0  imshow image datas 0   axarr 0 1  imshow image datas 1   axarr 1 0  imshow image datas 2   axarr 1 1  imshow image datas 3     The concept is the same for all subplots  and in most cases the axes instance provide the same methods than the pyplot  plt  interface   E g  if ax is one of your subplot axes  for plotting a normal line plot you d use ax plot     instead of plt plot    This can actually be found exactly in the source from the page you link to

[python] Plotting images side by side using matplotlib

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