I need a help, I want to use p with mysql, i've installed mysql and the package DBI but when i'm tapping :library(DBI) and there is no probleme, then i tap : MySQL(max.con = 16, fetch.default.rec = 5000, force.reload = F) and there is a message erreur ; Erreur dans library(MySql) : aucun package nommé 'MySql' n'est trouvé So what is the probleme, I don't understand anything??? Thank you very much, User --------------------------------- [[alternative HTML version deleted]]
Hi Mr Plate, I have a little question How to convert a rowname vector of numbers into a real column of the matrix, My problem is that I applied a rowsum function on a matrix. Then I get a matrix in which the names of the columns are the values of the group (numbers) Now I need to make calculation on the groups row. How to convert this vector of (rownames) into a real column in the matrix ? thanks by advance Jessica Gervais _________________________________________________________________ www.windowslivemessenger.fr