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I wanted the imshow() function in matplotlib.pyplot to display images the opposite way, i.e upside down. Is there a simple way to do this?
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Use ax. invert_yaxis() to invert the y-axis, or ax.
By default, imshow normalizes the data to its min and max. You can control this with either the vmin and vmax arguments or with the norm argument (if you want a non-linear scaling).
show() displays the figure (and enters the main loop of whatever gui backend you're using). You shouldn't call it until you've plotted things and want to see them displayed. plt. imshow() draws an image on the current figure (creating a figure if there isn't a current figure).
cmap : This parameter is a colormap instance or registered colormap name. norm : This parameter is the Normalize instance scales the data values to the canonical colormap range [0, 1] for mapping to colors. vmin, vmax : These parameter are optional in nature and they are colorbar range.
Specify the keyword argument origin='lower' or origin='upper' in your call to imshow.
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