How to produce plot with text as ytick labels

Question

I am just getting to know the Python libraries pandas and matplotlib. Can you show me as an example how to produce a plot similar to this one with matplotlib:

enter image description here

On the y-axis to the right the names of the data instances are listed. The x-axis below is for some value related to each instance.

The data is in .csv format similar to this:

name;value1;value2
uk-2007-05;0.01;1000

Ideally, both value1 and value2 should be plotted in the same plot with different colors or markers.

possible duplicate http://stackoverflow.com/questions/12645946/imshow-labels-as-any-function-of-the-image-indices/12654847#12654847 — tacaswell, Feb 11 '13 at 20:51
How a title like that can help others to find their answer ? — joaquin, Aug 17 '13 at 10:24

tacaswell · Accepted Answer · 2013-02-12T06:38:52.303

4

import random
import matplotlib.pyplot as plt

labels = [chr(j) for j in range(97, 115)]

fake_data1 = [random.random() for l in labels]
fake_data2 = [random.random() for l in labels]
y_data = range(len(labels))

figure()
ax = gca()

ax.grid(True)
ax.scatter(fake_data1, y_data, color='r')
ax.scatter(fake_data2, y_data, color='b')

ax.set_yticks(range(len(labels)))
ax.set_yticklabels(labels)
ax.invert_xaxis()
plt.draw()

Where labels is a list of your labels, y_data is indices of the labels for each data point, and fake_data1 and fake_data2 are you x values.

output

edited Feb 12 '13 at 06:38

answered Feb 11 '13 at 20:53

tacaswell

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+1 On a side note, explicitly setting the formatters and locators is probably overkill for something like this. – Joe Kington Feb 12 '13 at 00:26
@JoeKington You are probably right. I expanded/simplified the answer. – tacaswell Feb 12 '13 at 05:44
@tcaswell Thanks. Can I also put the labels on the right side of the plot and remove the `1.2` and `-0.2` marks? – clstaudt Feb 12 '13 at 13:43
@cls 1) `ax.yaxis.tick_right()` and 2) just adjust the x-limit – tacaswell Feb 12 '13 at 15:16
http://stackoverflow.com/questions/14406214/moving-x-axis-to-the-top-of-a-plot-in-matplotlib/14406447#14406447 – tacaswell Feb 12 '13 at 15:22

How to produce plot with text as ytick labels

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