Hot to plot maximum y value for group by each x

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回答： Cris LaPierre 2020-8-30

I have y axis = Alumn [data type double] , x axis = Sheet [data type datetime]

I want to plot grap maximum y value for group by each x

The information looks like this :

the cyclist 2020-8-30

Can you upload a sample of the data, instead of an image of the data (which is impossible to use).

Cris LaPierre 2020-8-30

It looks like your data is in a table. If so, use groupsummary to create the data to plot.

maxTbl = groupsummary(dataTbl,"Alumn","max","Sheet");

Then plot the summary data

plot(maxTbl.Alumn,maxTbl.max_Sheet)

Just a caution - this code is untested.

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