[R] how to put \ in a string?
I have string as follows:"v:\work\gene"
however, i can not write this as character string in R
what i did is:
path<- as.character("v:\work\gene")
but it seems that \ is eliminated:
Warning messages:
1: '\w' is an unrecognized escape in a character string
2: '\g' is an unrecognized escape in a character string
3: unrecognized escapes removed from "v:\work\gene"
> path
[1] "v:workgene"
how can i keep the \ in string.
thanks
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[R] how to parse out fitting statistics and write them into a data frame?
hello, everyone: I am conducting t test between drug and control for about 50,000 gene using the following syntax (treatment is factor): result<- lapply(split(data, data$gene),function(x) lm(value~treatment,x) however, the result is a list and i do not know whether more model fitting statistics (like p value of t test) is included in "result" or not. If i print the first element of resut i got the followings: > result[1] $`1007_s_at` Call: lm(formula = logvalue ~ treatment, data = x) Coefficients: (Intercept) treatmentveh 8.94030.3232 > summary(result[1]) Length Class Mode 1007_s_at 13 lmlist > So my question is whether more fitting statistics (other than coefficient estimation, like p value) are included in the "result". If yes, how can I parse them into a data frame so that i can output those statistics into a .csv file that can be shared with my clients. If not, how can I modify the code so that more stat can be computed and stored? any constructive suggestions are welcome. -- View this message in context: http://r.789695.n4.nabble.com/how-to-parse-out-fitting-statistics-and-write-them-into-a-data-frame-tp2075707p2075707.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] strange error msg from lapply and lm()
plus, it took long time to complete this analysis for only 24 records! Although I get the error msg, the result seems to be correct. -- View this message in context: http://r.789695.n4.nabble.com/strange-error-msg-from-lapply-and-lm-tp2124042p2124050.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] strange error msg from lapply and lm()
I am conducting a very simple t test for two genes using lapply (i try to avoid loop since i will have thousands of genes later on). however, I got strange error msg like the followings. It looks that R is complaining my factor has only one level, which is not the case (I check many times). > result<- lapply(split(all,all$CHIPEXP_NAME),function(x) > lm(logvalue~treatment,x)) Error in `contrasts<-`(`*tmp*`, value = "contr.treatment") : contrasts can be applied only to factors with 2 or more levels can anyone help me to dissect this problem? thanks in advance. -- View this message in context: http://r.789695.n4.nabble.com/strange-error-msg-from-lapply-and-lm-tp2124042p2124042.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] how to generate a random data from a empirical distribition
Dennis: points well taken. It seems to be important to investigate the nature of distribution. I might be too naive to assume a "emiprical probability distribution" will be simply calculated from a clound of data points... -- View this message in context: http://r.789695.n4.nabble.com/how-to-generate-a-random-data-from-a-empirical-distribition-tp2302716p2304321.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
