Finding a maximum y value for each x values

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Sarah Nolt-Caraway
Sarah Nolt-Caraway 2021-10-5
回答： Matt J 2021-10-5
I have an the x axis (from -3.1 to -2.4 separated by .1) and a y axis that has several points on each value for x. The y values range from -20 to 100.
I am trying to find the minimum and maximum y value for each value of x.
How would I approach this? I am assuming I need the min and max functions, but it only gives me one single point.
  2 个评论
DGM
DGM 2021-10-5
It really depends on how the data is arranged (i.e. how the arrays are shaped, whether they're sorted, etc). For a concrete example, you should probably give a more concrete description of what you're working with.
Sarah Nolt-Caraway
Sarah Nolt-Caraway 2021-10-5
Two tables, one with x values and one with y values. The rows corresponding to each other.... (x1,y1) if plotted

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采纳的回答

Matt J
Matt J 2021-10-5
G=findgroups(x);
Maximums=splitapply(@max,y,G);
Minimums=splitapply(@min,y,G);

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