[R] Correlation in Rattle

Hi, I recently installed Rattle for R 2.15.0 and all the functions work properly except for the Correlation button. After I choose the Correlation radio button in Explore tab, I click Execute, but nothing happens. No results at all. What is it that I am missing? Thank you, Avideh

[R] Running Ztest on r

hello, I would like to obtain a coefficient correlation between residuals and their expected value. in order to do that I need to run a z.test but non of the command available do not work, Im using z.score(x) or scores(x, type=z) commands . my R version is R 2.8.1 GUI 1.27 Tiger build 32-bit