Plotting a multicolored scatter graph from a pandas data frame

Asked Jul 30 '21 at 15:54

Active Jul 30 '21 at 16:06

Viewed 322 times

I have a pandas dataframe called data, with two numerical columns (col1 and col2) and one categorical (col3)

I want to plot col1 and col2 against each other, but colour points by col3

I tried this:

plt.scatter(data["col1"],data["col2"],c=data["col3"])

which I expected to work but got an error.

asked Jul 30 '21 at 15:54

Abijah

Can you also add the error you got ? – heretolearn Jul 30 '21 at 15:56
is your col3 numerical data? – sehan2 Jul 30 '21 at 15:56
`import seaborn as sns` and then `sns.scatterplot(data=data, x='col1', y='col2', hue='col3')`. – Trenton McKinney Jul 30 '21 at 15:57
no - its strings – Abijah Jul 30 '21 at 15:57
1

convert your strings to numerical values using a dictionary and then try plotting it again – sehan2 Jul 30 '21 at 15:57
https://stackoverflow.com/questions/26139423/plot-different-color-for-different-categorical-levels-using-matplotlib – heretolearn Jul 30 '21 at 16:24

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