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Dear users, is anybody of you aware of a R command to perform laplace transform or even its inversion? Thank you very much. Luca
I am trying to install the gsl package. I had gsl installed with YaSt in /usr/lib. when I launch R as superuser and launch install.packages, it says in cannot find Gnu Scientific Library. How can I make it...
Dear all, is it possible to have orizontal the y-title of a graph? Luca Laghi -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the...
Equation constraints: optim()Dear R-users, is it possible to exract from a data frame the rows whose name contains a certain letter? Thank you, Luca -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R...
Dear list members, I have created seven objects, from a to g, so that ls() gives me [1] "a" "b" "c" "d" "e" "f" "g" how can I automatically change their names in "a1" "b1" "c1" "d1" "e1" "f1" "g1...
Greetings, a little question: if I heve got a matrix with 10 columns, how do I produce a 10 elements vector with the average of each column? Thank you, Luca -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac...
Dear all, I would like to use the double quote symbol ( " ) as a character. How can I do it? In particular I'd like to obtain from the paste function the following string: "word" I tried with paste (""", word, """) but...
I need help to understand what Iam doing wrong: Yesterday I found the averages of a matrix columns with apply(x, 2, mean) Today I did it again on the same matrix obtaining results a bit different. Why? I suspect...
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