Lines of probability plot

2014 5 20
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更新时间：2014 5 20
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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!

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回答（1 个）

Star Strider
Star Strider 2014-5-20

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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.

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Sergei
Sergei 2014-5-20
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
Star Strider 2014-5-20
Use the probplot function. It has an option for the lognormal distribution.
Sergei
Sergei 2014-5-20
I need the data row of these lines, that's the problem
Star Strider
Star Strider 2014-5-20
I’m sorry. I don’t understand.
Do you mean something like lognfit or logninv?

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Sergei
Sergei
2014-5-20

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Star Strider
Star Strider
2014-5-20

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