Lines of probability plot

Hello! My problem is how to make by myself the lines of lognormal distribution as in probability plot. Normal distribution line is ok like in normplot. I need the formula for counting the lognormal line. Thanks!

Answer 1

[Star Strider]

If you have the Statistics Toolbox, use the lognpdf function (or related functions if that one is not exactly what you want). If you need to program your own function, it’s probably easy enough to do that with the information on that and related pages.

[Sergei]

Yes, I need to have own function, from the docs I couldnt understand how to create such lines related to red normal and blue lognrmal distribution. See in att

[Star Strider]

Use the probplot function. It has an option for the lognormal distribution.

[Sergei]

I need the data row of these lines, that's the problem

[Star Strider]

I’m sorry. I don’t understand.

Do you mean something like lognfit or logninv?