Bar Chart Using Matplotlib in Python

Question

I have a list of pairs.

Example:

pair1=[(a,a),(b,b),(c,c),(x,y)....]

In Python i need to generate a bar chart using matplotlib such that if x and y co-ordinates are same in a pair the bar chart should come to the maximum extent or else in case of (x,y) they are different and hence the bar chart should be at the 0 level. So please do help me out with the code in Python.

Literally the first hit on google. matplotlib.org/examples/api/barchart_demo.html — mmensing
– mmensing, Commented Mar 20, 2017 at 6:12

ImportanceOfBeingErnest · Accepted Answer · 2017-03-20 13:05:52Z

1

You first need to find out which pairs equal and generate a list of those results. This list can then be plotted using matplotlib.pyplot.bar.

import matplotlib.pyplot as plt

pair1=[("a","a"),("2",2),("b","b"),("c","c"),("x","y")]

f = lambda t: t[0] == t[1]
y= list(map(f, pair1))

plt.bar(range(len(y)), y)
plt.yticks([])
plt.show()

This code produces the following plot:

edited Mar 20, 2017 at 13:05

answered Mar 20, 2017 at 7:58

ImportanceOfBeingErnest

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5 Comments

Vinith Over a year ago

how to add scrolling bar to this if the series is long, equal spacing between 2 adjacent bars, same colour and printing the x value exaclty below its bar and removing the y ticks....do help me ..since I m new to Python

ImportanceOfBeingErnest Over a year ago

This is not a code writing service. While the code already has most of those features in, for each of the questions there are answers around somewhere. Scrollbars are not easy, you may start looking at a scrollbar for QT, wxpython or using a SliderWidget

Vinith Over a year ago

WTF if you dont know please .. @ImportanceOfBeingErnest

ImportanceOfBeingErnest Over a year ago

Sure I know it. I wrote for example this answer. You may copy it and use it if you like.

Vinith Over a year ago

but where can i include the above code of urs there

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