similar to: use mathematics formula

hello, I need help because for my training I need to write a lil program which is able to read a line of character and it would recognize words for example for this line of character if C325=. then C743=(C152/C103)*100| else C743=(C152/C325)*100 the program will be able to recognize the IF ELSE syntaxe and the equations thanks

hello, I don't understand what's happen just before the textConnection function runs good but now it doesn't run > Line[1] [1] "if C325=. then C743=(C152/C103)*100| else C743=(C152/C325)*100" > textConnection(Line[1]) Erreur dans textConnection(Line[1]) : toutes les connexions sont utilisées why R display that?

good morning, I have some SAS code to translate in R code and when I export data from Excel to R I have to read formula writed as follow C604=(C181/S181)*(100-C182)*(100/85) or if C325=. then C740=(C346/C103)*100| else C740=(C346/C325)*100 I find some difficulties to write a good program to read and calculate these formulas there are several kinds of formulas there are with conditional and

hello, how can I do to drop C from this character "C325" ? _____________________________________________________________________________ [[alternative HTML version deleted]]

hello, can you help me I need to seperate words and symbol in a mathematics formula as follow C744=(C627*C177)/100 How could I do please? _____________________________________________________________________________ [[alternative HTML version deleted]]

I saw the R-help to run some R programs in batch I used it like this > R CMD BATCH C:/Documents and Settings/melyakhlifi/Bureau/calcara.r Erreur : erreur de syntaxe dans "R CMD" but without success!!!I don't work on linux but on windows IS it the same command ? _____________________________________________________________________________ [[alternative HTML version