I am by no means a statistician, so please bear with me.
I have been asked by a reviewer of one of my projects to use a GEV distribution to determine the annual 1-percent chance value for wave runup. My dataset consists of a maxima for each year of 50 years-worth of wave run-up for the area of concern. I have used gevfit to determine a GEV distribution for the dataset. What I cannot figure out is how to determine the upper 1% of that distribution. What function will tell me what the 1% value is?
Appreciate the help.