Re: [R] Find in R and R books
Alaios ala...@yahoo.com writes: Also when I try to search in google using for example the word R inside the search lemma I get very few results as the R confuses the search engine. When I was looking something in matlab ofcourse it was easier to get results as the search engine performs better. What are your tricks when you want to find some function that provides some functionality? To search R-specific sites the best place to go is this one: http://www.rseek.org/ Cheers, Georg __ 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] Find in R and R books
Other people like R Site Search (http://search.r-project.org/nmz.html), which is available via the standard R function RSiteSearch. For me, the fastest literature search on virtually anything statistical is the findFn function in the sos package. (Disclaimer: I'm the lead author of that package, so I may be biased.) findFn sorts search results to put the package with the most matches first. The print method opens a table of the results in a web browser with hot links to the individual matches. sos comes with a vignette, which includes an example of the writeFindFn2xls function. This writes a findFn object to an Excel file with two sheets: The second is all the matches found. The first is a summary of the packages found with extra information not available via RSiteSearch. Hope this helps. Spencer On 11/22/2010 3:19 AM, Georg Otto wrote: Alaiosala...@yahoo.com writes: Also when I try to search in google using for example the word R inside the search lemma I get very few results as the R confuses the search engine. When I was looking something in matlab ofcourse it was easier to get results as the search engine performs better. What are your tricks when you want to find some function that provides some functionality? To search R-specific sites the best place to go is this one: http://www.rseek.org/ Cheers, Georg __ 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-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] Find in R and R books
Date: Mon, 22 Nov 2010 17:28:57 -0800 From: spencer.gra...@structuremonitoring.com To: g...@well.ox.ac.uk CC: r-h...@stat.math.ethz.ch Subject: Re: [R] Find in R and R books Other people like R Site Search (http://search.r-project.org/nmz.html), which is available via the standard R function RSiteSearch. For me, the fastest literature search on virtually anything statistical is the findFn function in the sos package. (Disclaimer: I'm the lead author of that package, so I may be biased.) findFn sorts search results to put the package with the most matches first. The print method opens a table of the results in a web browser Again, I have in past taken docs for various things like R, rendered html to text and used things like grep and built my own indicies. However, your facility does seem in that line of thought. Personally I haven't had a problem with google scholar or probably even citeseer would return good hits, R is not a common english word so I think google can make use of it. with hot links to the individual matches. sos comes with a vignette, which includes an example of the writeFindFn2xls function. This writes a findFn object to an Excel file with two sheets: The second is all the matches found. The first is a summary of the packages found with extra information not available via RSiteSearch. Hope this helps. Spencer On 11/22/2010 3:19 AM, Georg Otto wrote: Alaios writes: Also when I try to search in google using for example the word R inside the search lemma I get very few results as the R confuses the search engine. When I was looking something in matlab ofcourse it was easier to get results as the search engine performs better. What are your tricks when you want to find some function that provides some functionality? To search R-specific sites the best place to go is this one: http://www.rseek.org/ Cheers, Georg __ 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-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-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] Find in R and R books
Hi, Mike, et al.: in line On 11/22/2010 5:43 PM, Mike Marchywka wrote: Date: Mon, 22 Nov 2010 17:28:57 -0800 From: spencer.gra...@structuremonitoring.com To: g...@well.ox.ac.uk CC: r-h...@stat.math.ethz.ch Subject: Re: [R] Find in R and R books Other people like R Site Search (http://search.r-project.org/nmz.html), which is available via the standard R function RSiteSearch. For me, the fastest literature search on virtually anything statistical is the findFn function in the sos package. (Disclaimer: I'm the lead author of that package, so I may be biased.) findFn sorts search results to put the package with the most matches first. The print method opens a table of the results in a web browser Again, I have in past taken docs for various things like R, rendered html to text and used things like grep and built my own indicies. However, your facility does seem in that line of thought. Personally I haven't had a problem with google scholar or probably even citeseer would return good hits, R is not a common english word so I think google can make use of it. Thanks for this. For me, anything that mixes math with worked examples is vastly superior to either alone, because I no longer have to puzzle sometimes for hours over a single line or page of mathematics: I can try a variety of examples and walk through the code line by line until I understand. In that way, I find R packages much more intelligible than theoretical treatises. This is especially true when the R package comes with a vignette or companion documentation with script files working the examples (e.g., like the scripts subdirectories for nmle and fda). Spencer with hot links to the individual matches. sos comes with a vignette, which includes an example of the writeFindFn2xls function. This writes a findFn object to an Excel file with two sheets: The second is all the matches found. The first is a summary of the packages found with extra information not available via RSiteSearch. Hope this helps. Spencer On 11/22/2010 3:19 AM, Georg Otto wrote: Alaios writes: Also when I try to search in google using for example the word R inside the search lemma I get very few results as the R confuses the search engine. When I was looking something in matlab ofcourse it was easier to get results as the search engine performs better. What are your tricks when you want to find some function that provides some functionality? To search R-specific sites the best place to go is this one: http://www.rseek.org/ Cheers, Georg __ 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-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] Find in R and R books
Hello everyone. In matlab (again) there is a fucntion find that returns you the indexes where the condition in find was met. I want the same functionality in R i.e find(Mydata2) to return all the indexes where the condition is met. Do you know something like that? Also when I try to search in google using for example the word R inside the search lemma I get very few results as the R confuses the search engine. When I was looking something in matlab ofcourse it was easier to get results as the search engine performs better. What are your tricks when you want to find some function that provides some functionality? I would like to thank you for your help Regards Alex [[alternative HTML version deleted]] __ 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] Find in R and R books
Hi again! The Introduction to R or other documentation might help you to get started. And you should REALLY read the posting guide and provide a reproducible example. In this case, some sample data corresponding to the type of objects you have, plus the result you expect would be enough (I guess). From you precedent posts, I would think you're looking for something similar to this: df - data.frame(let=rep(LETTERS[1:5],4), num=rnorm(20)) df[df$let==A, ] df[df$num0, ] By the way, if you just want the indexes, that will do: which(df$num0) Ivan Le 11/17/2010 15:35, Alaios a écrit : Hello everyone. In matlab (again) there is a fucntion find that returns you the indexes where the condition in find was met. I want the same functionality in R i.e find(Mydata2) to return all the indexes where the condition is met. Do you know something like that? Also when I try to search in google using for example the word R inside the search lemma I get very few results as the R confuses the search engine. When I was looking something in matlab ofcourse it was easier to get results as the search engine performs better. What are your tricks when you want to find some function that provides some functionality? I would like to thank you for your help Regards Alex [[alternative HTML version deleted]] __ 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. -- Ivan CALANDRA PhD Student University of Hamburg Biozentrum Grindel und Zoologisches Museum Abt. Säugetiere Martin-Luther-King-Platz 3 D-20146 Hamburg, GERMANY +49(0)40 42838 6231 ivan.calan...@uni-hamburg.de ** http://www.for771.uni-bonn.de http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php __ 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] Find in R and R books
Hi Alex, This ought to do what you are after. For searching, I found the most helpful thing to be thinking about what I was really after---this helps with generating several key words to look for, which is more likely to turn up results. I also included some functions/packages to help with R specific searching below. Cheers, Josh ### ## pseudo-random data with mean = 0 x - rnorm(20) ## Logical, vectorized test so it compares each element ## of x and determines whether it is greater than 2 or not ## returns a vector of TRUE/FALSE x 2 ## When indexing in R, if you pass a TRUE/FALSE vector of equal ## length, it will select TRUE elements and exclude the FALSE ## so your solution is: x[x 2] ## or if you just want the indices, not the actual values which(x 2) ## for documentation see ?Comparison #logical comparison/test ?logical # TRUE/FALSE class ?which # which function ?[ # indexing ## You can use this built in search function RSiteSearch(your key word(s)) ## If you think you almost know the name, apropos looks up objects ## in R that include your search string apropos(find) ## There is a package to help with searching: install.packages(sos) library(sos) findFn(words for desired function) On Wed, Nov 17, 2010 at 6:35 AM, Alaios ala...@yahoo.com wrote: Hello everyone. In matlab (again) there is a fucntion find that returns you the indexes where the condition in find was met. I want the same functionality in R i.e find(Mydata2) to return all the indexes where the condition is met. Do you know something like that? Also when I try to search in google using for example the word R inside the search lemma I get very few results as the R confuses the search engine. When I was looking something in matlab ofcourse it was easier to get results as the search engine performs better. What are your tricks when you want to find some function that provides some functionality? I would like to thank you for your help Regards Alex [[alternative HTML version deleted]] __ 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. -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.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.
