01-29-2016 04:18 PM
I am quite new to SAS, and I am trying to make a quantile diagram where the data is aligned along the 1. axis, and the normal distribution quantiles along the 2. axis, but I don't know how - when I use qqplot it aligns it the other way around.
01-29-2016 04:40 PM
I am using SAS 9.4, and the code I am using is
PROC UNIVARIATE data = diff;
QQPLOT differens / NORMAL(mu = est sigma = est l=2)
I hope that answers your question?
01-29-2016 04:41 PM
I assume you are using PROC UNIVARIATE.
The standard form is the way that PROC UNIVARIATE creates it, so I encourage you to use that form. However, if you insist of making the Q-Q plot "backawards," you have two options:
1. Forget about UNIVARIATE and create the data yourself by using the DATA step and the SCATTER statement in PROC SGPLOT. See the end of my blog post about Q-Q plots for an example.
2. Use PROC UNIVARIATE to create the plot, but write the data from the graph into a data set and then use PROC SGPLOT to reverse the axes. To write the data, put the following statement before your UNIVARIATE call:
ODS OUTPUT QQPLOT=QQ;
Then use the techniques in my blog post "How to get data values out of ODS graphics" to figure out the names of the variables that you need. The SCATTER statement in PROC SGPLOT completes the job.