5 messages · lord12, Wu Gong, jim holtman +1 more
temp = "~aparch("
temp1 = paste(temp,1, sep = "")
temp2 = paste(temp1,1, sep = ",")
temp3 = paste(temp2, ")",sep = "")
temp 3 is a character but I want to convert to formula object. How do I do
this?
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how do I convert it to a language object?
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Hi, Please try ?parse and ?eval. Here is an example: text <- "3*6" parse(text=text) eval(parse(text=text)) ----- A R learner.
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Have you tried this:
temp = "~aparch("
temp1 = paste(temp,1, sep = "")
temp2 = paste(temp1,1, sep = ",")
temp3 = paste(temp2, ")",sep = "")
temp3
[1] "~aparch(1,1)"
as.formula(temp3)
~aparch(1, 1)
x <- as.formula(temp3) str(x)
Class 'formula' length 2 ~aparch(1, 1) ..- attr(*, ".Environment")=<environment: R_GlobalEnv>
temp = "~aparch("
temp1 = paste(temp,1, sep = "")
temp2 = paste(temp1,1, sep = ",")
temp3 = paste(temp2, ")",sep = "")
temp 3 is a character but I want to convert to formula object. How do I do
this?
--
View this message in context: http://r.789695.n4.nabble.com/how-to-convert-string-to-object-tp2999281p2999281.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________ R-help at 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.
Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve?
Hi, Wu Gong and Jim Holtman gave you options that should work, but I suspect there is a way to circumvent the entire issue if we knew more about your context and goals. Of course pasting together calls and then evaluating them is always an option, but there may be a simpler way. This is all summarized nicely:
[snip]
What is the problem that you are trying to solve?
Cheers, Josh
temp = "~aparch("
temp1 = paste(temp,1, sep = "")
temp2 = paste(temp1,1, sep = ",")
temp3 = paste(temp2, ")",sep = "")
temp 3 is a character but I want to convert to formula object. How do I do
this?
--
View this message in context: http://r.789695.n4.nabble.com/how-to-convert-string-to-object-tp2999281p2999281.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________ R-help at 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.
Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.com/