Designate order of categorical array?

I have a categorical array that I'm plotting on the y-axis against time. I need to designate that E_1 is greater than E_2, but it keeps plotting E_1 as the lower y-value. I tried the reverse function: ay.YAxis.Direction = 'reverse' but it doesn't seem to apply to categorical arrays.

y= ["E_1","E_1","E_2","E_2","E_2","E_2","E_2"] %y-values

y1 = categorical(y) %designate as categorical array

x= [-0.2, 0, 0.002, 0.01, 0.05, 0.25, 1] %x-values

plot(x,y1,'k',"LineWidth",1.5) %plot

Answer 1

[dpb]

You have to create an ordinal categorical array of the desired ordering of magnitudes to force other than the alphabetic ordering MATLAB uses by default.

valueset=fliplr(unique(y));                         % generate order of values reverse alpha order
yOrd=categorical(y,valueset,'Ordinal',true);        % create ordinal categorical with those values

Now the plot of yOrd versus x will have E1 above E2 on the y-axis.

[Alexis Gray]

Perfect, thank you!

[goc3]

This answer was helpful!