Finding a maximum y value for each x values

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.

[DGM]

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]

Two tables, one with x values and one with y values. The rows corresponding to each other.... (x1,y1) if plotted

Answer 1

[Matt J]

G=findgroups(x);
Maximums=splitapply(@max,y,G);
Minimums=splitapply(@min,y,G);