Dear Manish I have installed from the file I send you. Doing directly from CRAN doesn't result. After installation you can see the help (help(rqpd). Sincerely PS: it works on last version of R in Linux (ubtuntu) -- ><><><><><><><><><><><><><><> João Sousa Andrade jasa04011950 at gmail.com ><><><><><><><><><><><><><><>