In Matplotlib we can reverse axes of a graph using multiple methods. Most common method is by using invert_xaxis() and invert_yaxis() for the axes objects. Other than that we can also use xlim() and ylim(), and axis() methods for the pyplot object.
Method 1: Using invert_xaxis() and invert_yaxis() method
To invert X-axis and Y-axis, we can use invert_xaxis() and invert_yaxis() function. We can invert either any one of the axes or both axes using the above methods.
Code:
Python3
# importing numpy and matplotlibimport numpy as npimport matplotlib.pyplot as plt# creating an x sequencex = np.linspace(5, 15, 35)# equation of a straight liney = 3*x+4# creating graph space for two graphsgraph, (plot1, plot2) = plt.subplots(1, 2)# plot1 graph for normal axesplot1.plot(x, y)plot1.set_title("Normal Plot")# plot2 graph for inverted axesplot2.plot(x, y)plot2.set_title("Inverted Plot")plot2.invert_xaxis()plot2.invert_yaxis()# display the graphgraph.tight_layout()plt.show() |
Output:
Normal Plot and Inverted Plot (Both axes inverted)
Method 2: Using xlim() and ylim() method
xlim() and ylim() can also be used to invert axes of a graph plot. They are generally used to set or get limits for X-axis and Y-axis respectively. But if we pass the minimum value in the axis as the upper limit and maximum value in the axis as the lower limit we can get a reverted axis.
Code:
Python3
# importing numpy and matplotlibimport numpy as npimport matplotlib.pyplot as plt# creating an x sequencex = np.linspace(5, 15, 35)# equation of a straight liney = 3*x+4# creating graph space for two graphsgraph, (plot1, plot2) = plt.subplots(1, 2)# plot1 graph for normal axesplot1.plot(x, y)plot1.set_title("Normal Plot")# plot2 graph for inverted axesplot2.plot(x, y)plot2.set_title("Inverted Plot")plt.xlim(max(x), min(x))plt.ylim(max(y), min(y))# display the graphgraph.tight_layout()plt.show() |
Output:
Normal Plot and Inverted Plot (Both axes inverted)
Method 3: Using axis() method
Similar to xlim() and ylim(), axis() method is also used to set the minimum and maximum values of the X-axis and Y-axis. So, if we pass the minimum value in the axis as the upper limit and the maximum value in the axis as the lower limit we can get a reverted axis.
Code:
Python3
# importing numpy and matplotlibimport numpy as npimport matplotlib.pyplot as plt# creating an x sequencex = np.linspace(5, 15, 35)# equation of a straight liney = 3*x+4# creating graph space for two graphsgraph, (plot1, plot2) = plt.subplots(1, 2)# plot1 graph for normal axesplot1.plot(x, y)plot1.set_title("Normal Plot")# plot2 graph for inverted axesplot2.plot(x, y)plot2.set_title("Inverted Plot")plt.axis([max(x), min(x), max(y), min(y)])# display the graphgraph.tight_layout()plt.show() |
Output:
