Suppose that I am plotting some data that corresponds to "i" different functions. So on the plot I have "i" number of curves on one plot. Instead of using a legend, I would like to label the y-axis x mark that corresponds to the function. I can do this using the set gca tick label function. Here's the catch, the plotting of the "i" number of curves repeats for "k" times. Each "kth" iteration, the number of curves on the plot may or may not be the same as the previous "k" iteration. I can create an array based on "i" which would label the y tick marks but I want to include the letter "N" followed by the "ith" curve". See attached figures. Right now I have to do the labeling manually for each iteration.