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Python GUI Programming Cookbook by Burkhard A. Meier

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Adjusting the scale of charts dynamically

In the previous recipe, we learned how we can limit the scaling of our charts. In this recipe, we will go one step further by dynamically adjusting the scaling by setting both a limit and analyzing our data before we represent it.

Getting ready

We will enhance the code from the previous recipe by reading in the data we are plotting dynamically, averaging it, and then adjusting our chart.

While we would typically read in the data from an external source, in this recipe, we create the data we are plotting using Python lists, as can be seen in the following code.

How to do it...

We are creating our own data in our Python module by assigning lists with data to the xvalues and yvalues variables.

In many graphs, the ...

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