python seaborn plot title or footnote including variable?

Question

I'd like to be able to include a variable in either the title (subtitle) or footnote text on a seaborn pairplot -- I'm selecting for a date range and specifically want to add the dates and a name. I can easily put a static title on the pairplot and it runs as expected.

Here's the code:

subData = rslt_avgData[['averageSpO2', 'averageHR', 'averageRR', 'averagePVi', 'averagePi']]
g=sns.pairplot(subData, hue = 'averageSpO2', palette= 'dark:salmon')
g.fig.suptitle("Average SpO2 compared to average of other variables, selected dates", y=1.05, fontweight='bold')
g.fig.text('Event Name: ', eventName,
           '\nStart Date: ', startDate,
          "\nEnd Date: ", endDate)

Here's the error:

----> 7 g.fig.text('Event Name: ', eventName,
      8            '\nStart Date: ', startDate,
      9           "\nEnd Date: ", endDate)

TypeError: text() takes from 4 to 5 positional arguments but 7 were given

If I try just using the fixed text, I get this error:

----> 7 g.fig.text('Event Name: \nStart Date: \nEnd Date: ')

TypeError: text() missing 2 required positional arguments: 'y' and 's'

If I try when specifying location (x,y), and the text (s), like this: g.fig.text(x=0, y=-0.5, s='Event Name: ',eventName,'\nStart Date: \nEnd Date: ') (whether I put the x and y at the beginning or the end...)

I get this error:

    g.fig.text(x=0, y=-0.5, s='Event Name: ',eventName,'\nStart Date: \nEnd Date: ')
                                                                                   ^
SyntaxError: positional argument follows keyword argument

mosc9575 · Answer 1 · 2022-12-02T08:31:08.633

Seaborn is based on Matplotlib and you can use the syntax from matplotlib.pyplot.text()

text(x, y, s, fontdict=None, **kwargs) Add text to the Axes.

Add the text s to the Axes at location x, y in data coordinates.

Parameters:

x, y: float

The position to place the text. By default, this is in data coordinates. >The coordinate system can be changed using the transform parameter.

s: str

The text.

fontdictdict, default: None

A dictionary to override the default text properties. If fontdict is None, the defaults are determined by rcParams.

To use this function, you have to give always the positions x and y ans a string s. Keyword Arguments are optional, ant with this you can set the font style and text size.

It is not allowed to write something like text(x=1, 2). All parameters, without a parameter assignment have to be at the beginning of the function call. Afterwars all arguments have to have a keayword. text(x=1, y=2) is valid.

In your last line the problem is this:

g.fig.text(x=0, y=-0.5, s='Event Name: ', eventName,'\nStart Date: \nEnd Date: ')
                                                  ^ This has to be "="

Because eventName is not a valid keyword, nothing should happen. See the linked documentation for more details.

python seaborn plot title or footnote including variable?

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