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Thanks very much. I don't understand the 90/10 rule? Is there an adverb meaning "by volunteering"? Related -1Research paper for paired t-test implemented in R0T test and permutation testing-1T test failed in R-1Apply t-test on list in R1Testing Various Hypothesis Test for Coefficients in R0Multiple T-test in

SN74LS74AN trouble Misuse of parentheses for multiplication How to copy with the last 1 with pattern matching method in a list Does the Many Worlds interpretation of quantum mechanics necessarily imply Why do neural network researchers care about epochs? Thanks, that problem looks very similar to mine. Free forum by Nabble Edit this page [R] Odp: How to make t.test handle "NA" and "essentially constant values" ?

R Catch Error

Hot Network Questions Why is AT&T's stock price declining, during the days that they announced the acquisition of Time Warner inc.? NULL, 0 or Inf) by editing the error handling function. Draw an ASCII-O'-Lantern for Halloween Numbers at the corners of concentric squares Drone Racing on moon Is there an adverb meaning "by volunteering"? permalinkembedsaveparentgive gold[–]Sanguine_Abeyance 0 points1 point2 points 1 year ago(1 child)What's your dataframe name?

The apply loop crashes with the error 'data are essentially constant'. more hot questions question feed lang-r about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Can you either edit your question or delete it to reflect your updated problem? –Carl Witthoft Feb 28 '12 at 20:17 | show 1 more comment 3 Answers 3 active oldest The only rule: be polite.

Here's an exampleusing try():my.t.test.p.value <- function(...) {+ obj<-try(t.test(...), silent=TRUE)+ if (is(obj, "try-error")) return(NA) else return(obj$p.value)+ }I've written the following functions to make these tasks a little easier:try_default <- function (expr, default R Try Catch Is it okay to send my professor humorous material? I can see why a paired t-test doesn't like these data, but is this reason enough to crash the entire 'apply' loop? Passing a lambda into a function template Decimal numbers on UGC Ratings Is there an adverb meaning "by volunteering"?

I just need to get the pvalues for my dataset using t.test. Thierry Onkelinx Threaded Open this post in threaded view ♦ ♦ | Report Content as Inappropriate ♦ ♦ Re: How to make t.test handle "NA" and "essentially constantvalues" ? Should non-native speakers get extra time to compose exam answers? When you are a beginner, ALWAYS read in your data first, and then LOOK at it.

R Try Catch

Is that the case? Give us exactly what you typed. R Catch Error Much appreciated –user3302763 Dec 12 '14 at 7:41 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Have a look at ?try try(t.test(x)) HTH, Thierry ------------------------------------------------------------------------ ---- ir.

You numeric data must be only numbers. reply | permalink Hadley wickham I've written the following functions to make these tasks a little easier: try_default <- function (expr, default = NA) { result <- default tryCatch(result <- expr, r hypothesis-test share|improve this question edited Jul 8 '15 at 15:02 C8H10N4O2 4,32511947 asked Feb 28 '12 at 11:14 user900889 3528 2 Can you provide a minimal example reproducing the Using the rounded dataset, a logical index can be created to drop the rows in the original/unrounded dataset.

  • I am using R to run a large number of 2-group t-tests, using input from a delimited table.
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  • Thanks Burak Uwe Ligges wrote: > burak kutlu wrote: > > Hello, > > I was wondering if there is a way to ignore the > error > > message
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So this means that as far as statistics go, there's no need for fancy t.test and its a certainty that for each subject there would be a -2 reduction in the To eliminate those rows, do rowSums and check whether it is equal to ncol(new.CL). Is it safe for a CR2032 coin cell to be in an oven? Where's the 0xBEEF?

At that point, there are two possible actions: (1) stop with an informative error, and (2) silently return NA. At that point, there are two possible actions:(1) stop with an informative error, and (2) silently return NA. How to copy with the last 1 with pattern matching method in a list Cooking inside a hotel room Is it a Good UX to keep both star and smiley rating

You shall be gratefull for a great software which prevent you from making silly things as try to compute t.test when data have zero variantion or number of observations is 1.

To me (as an R newbie) it does not seem to be a good idea to crash the entire script just because the t.test doesn't like one piece of data. Then simply click on your username on Reddit, go to the comments tab, and hit the new OVERWRITE button at the top. It's nice that the software recognizes situations in which a sensible answer can't be computed. http://www.R-project.org/posting-guide.html Received on Tue Dec 28 05:12:23 2004 This message: [ Message body ] Next message: Liaw, Andy: "RE: [R] how to ignore t.test error message" Previous message: Rajdeep Das: "[R]

I'm intending to compare the Subject and School type column (specifically languages, and middle/junior schools) to the Gender bias estimate. We get a logical matrix of TRUE/FALSE. Ng Stanley Threaded Open this post in threaded view ♦ ♦ | Report Content as Inappropriate ♦ ♦ Re: How to make t.test handle "NA" and "essentially constant values" ? We probably need more help than you give us above.

Is there a way to locate the data points causing the problem? –user3302763 Dec 12 '14 at 6:29 Why would comparing 3 numbers to another three numbers using a In reply to this post by PIKAL Petr Petr PIKAL wrote: > Hi > > [hidden email] napsal dne 12.02.2008 09:09:23: > >> Hi, >> >> First problem: >>> test <- Tony Plate tplate at acm.org Tue Feb 12 22:59:37 CET 2008 Previous message: [R] How to make t.test handle "NA" and "essentially constant values" ? On 2/12/08, Ng Stanley <[hidden email]> wrote: > > Thanks, that problem looks very similar to mine.

Powered by vBulletin™ Version 4.1.3 Copyright © 2016 vBulletin Solutions, Inc. Ng Stanley Threaded Open this post in threaded view ♦ ♦ | Report Content as Inappropriate ♦ ♦ Re: How to make t.test handle "NA" and "essentially constant values" ? Here's an example using try(): > my.t.test.p.value <- function(...) { + obj<-try(t.test(...), silent=TRUE) + if (is(obj, "try-error")) return(NA) else return(obj$p.value) + } > my.t.test.p.value(numeric(0)) [1] NA > my.t.test.p.value(1:10) [1] 0.000278196 > Why is Pascal's Triangle called a Triangle?

It also will not correctly read in data that has commas, percent signs, or $ signs. I will p.adjust for multiple correction later. –user3302763 Dec 12 '14 at 6:33 @user3302763 I posted a solution. Please help. It's nice that the software recognizes situations in which a sensible answer can't be computed.

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