How to split the numerical data using discretize Function

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Deborah Johnson
Deborah Johnson 2022-7-18
编辑： Deborah Johnson 2022-7-20
My first step was to plot the Weekday of Month data as numerical values 1 - 7 which I have attached and the task was successful.
With the second step, I am attempting to "discretize" >> Weekday of Month and split the numerical data into seven groups that corrlates with each weekday value of 1 as Sunday, 2 as Monday, etc. and the new column data states Sunday for 1, etc in the table.
flights.WEEKDAY_LABEL = discretize(flights.WEEKDAY_OF_MONTH,[1, 2, 3, 4, 5, 6, 7], "categorical",["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"])
Error states: "Fourth agrument, category names, must be a cell array with length equal to the number of bins, 6." What is incorrect?

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dpb
dpb 2022-7-19
编辑：dpb 2022-7-19
discretize uses bin edges, not bin centers so your seven values define six bins, not seven, annoying as that is as compared to the venerable histc
Try
flights.WEEKDAY_LABEL=discretize(flights.WEEKDAY_OF_MONTH,(1:8),"categorical",["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]);
and joy will ensue...

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