Hi,   I have two data sets. One containes a list of formal fortuen 500 companies' name. The other contains patent information for a lot of companies which are extracted online, so the format of the companies' name may differ from the first data set, even if they refer to the same company.    What I wanted to do is to select out the patent information for the companies who are among the fortune 500 companies. So, I have to compare the compare the names between the two data sets. I used soundslike (=*) statemete, and treat each of the fortune 500 companies as a macro variable. As the follwoing code shows:   data _null_; set company0; suffix=put(_n_,5.); call symput(cats('company',suffix), company); run;   data selected_patent; set patent0; where organization_name =* "&company1."; company=put("&company1.", 25.); run;   &company1. stands for the one of the fortune companies, but I have 500 macro variables like this.    one way I can think of is to run macro program, but I have to list 500 call statement for macro program!!!!!!   Is there any easy way to finish this task, instead of using calling macro program for 500 times?   Thanks, Sherri ... View more

Hi,   Is SAS capable to run nonlinear quantile regression? Especially, I have three parameters needed to be estimated.   I saw several quantile regression samples, but all of them are using general regression models.  Is there any way I can use proc quantreg with nonlinear models to estimate three parameter variables?   Thanks,       ... View more