Error Could Not Find Function Melt
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Error: Could Not Find Function "ddply"
posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow could not find function in r Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error: could not find function … in R melt and cast in r up vote 96 down vote favorite 24 I am using R and tried some.function but I got this error message : Error: could not find function `some.function` This question comes up very regularly. When you get the error: could not find function in R, how can you solve it? Thank you in advance for your help. This is meant to be a FAQ question, so please be as
Could Not Find Function Ggplot
complete as possible. The answer is a community answer, so feel free to edit if you think something is missing. This question is approved on meta: http://meta.stackexchange.com/questions/101892/community-wiki-with-common-error-messages-allowed r function error-handling r-faq share|improve this question edited Apr 25 '14 at 9:44 community wiki 11 revs, 6 users 54%Joris Meys 3 Before you vote to close this question, first read this disussion on meta: meta.stackexchange.com/questions/101892/… –Andrie Aug 11 '11 at 14:14 2 If all else fails, try grepping the source code for base R and your installed packages –nullglob Aug 11 '11 at 14:46 3 @nullglob That seems somewhat extreme :-) –Gavin Simpson Aug 11 '11 at 14:51 um, what is wrong . . . –mdsumner Aug 11 '11 at 15:21 I have a relevant question: stackoverflow.com/questions/23357551/…. In this case, ANY R command fails, but q()! Advice will be greatly appreciated! –Aleksandr Blekh Apr 30 '14 at 9:29 add a comment| 8 Answers 8 active oldest votes up vote 63 down vote accepted There are a few things you should check : Did you write the name of your function correctly? Names are case sensitive. Did you install the package that contains the function? install.pac
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Error: Could Not Find Function "opts"
like you, helping each other. Join them; it only takes a minute: Sign up R package reshape function melt error: id variables not found in data when working with a lot of factors up vote 8 down http://stackoverflow.com/questions/7027288/error-could-not-find-function-in-r vote favorite 1 I am working with a rarefaction output from mothur, which basically gives me a dataset containing the number of sequences sampled and the number of unique sequences in several samples. I would like to use ggplot2 to visualize this data and therefore need to use melt to go from a wide to a long format. The problem is that I find no way to make this work due to an error of http://stackoverflow.com/questions/12320198/r-package-reshape-function-melt-error-id-variables-not-found-in-data-when-worki melt. Which basically states Error: id variables not found in data: 1,3,6, (... and so on) Because of the size of the original dataset it would be impractcal to share it here nonetheless one should be able to recreate the same problem using the following code: a<-seq(0,300,3) b<-runif(length(a)) c<-runif(length(a)) d<-as.data.frame(cbind(a,b,c)) d$a<-as.factor(d$a) melt(d,d$a) Which gives exactly the same error: Error: id variables not found in data: 0,3,6,9, (...) I fail to see what I am doing wrong. I am using R 2.15.1 on ubuntu server 12.04. Both the function reshape::melt and reshape2::melt result in the same error. r reshape melt share|improve this question edited Sep 7 '12 at 14:44 Jilber 30.4k44572 asked Sep 7 '12 at 14:35 FM Kerckhof 517315 add a comment| 1 Answer 1 active oldest votes up vote 6 down vote accepted You should use: melt(d, id.vars="a") a variable value 1 0 b 0.019199459 2 3 b 0.693699677 3 6 b 0.937592641 4 9 b 0.299259963 5 12 b 0.485403439 ... From the help of ?melt.data.frame: data data frame to melt id.vars vector of id variables. Can be integer (variable position) or string (variable name)If blank, will use all non-measured variables Thus your id.vars argument should be a character vector of names, e.g. "a" or a numeric vector, e.g. 1. The length of this vector should equal the number o
subject ] [ author ] Hi all, trying to use the melt function in data.table and I'm getting an error.... Anyone could not seen this before or know how to fix it? Thanks str(Distdata) Classes ‘data.table' and 'data.frame': 828451 obs. of 3 variables: $ Poly1 : int 50088 50088 50088 50088 50088 50088 50088 could not find 50088 50088 50088 ... $ Poly2 : int 44884 11542 11543 11540 11541 11546 11547 11544 11545 11548 ... $ Distance: int 788641 3794345 3652511 3915074 3895469 3639175 3644151 3648356 3646023 3615863 ... - attr(*, ".internal.selfref")=
how to perform a t test. http://www.statmethods.net/index.html Grammar of graphics R is highly programmable and many people have extended its graphics machinery with additional features. Often, packages include specialized functions for plotting. The zoo package, for instance, works with time-series objects. If you create a zoo object z and then call plot(z), the functions in the package create a graphic that is customized for displaying time series. There are entire packages devoted to extending R with new graphics paradigms. The lattice package is based on grid graphics. The ggplot2 package contains plotting functions that are more flexible than the traditional R graphics. gg stands for the Grammar of Graphics,' a theory of how to create a graphics system. The grammar specifies how a graphic maps data to attributes of geometric objects. The attributes are color, shape, and size and the geometric objects are points, lines, bars, and polygons. The plot is drawn on a coordinate system and it may contain statistical manipulations of the data. The application of the grammar makes it easy for you to explore your data. Let's use the FL precipitation data. ## Warning: cannot open file 'FLprecip.txt': No such file or directory ## Error: cannot open the connection ## Error: object 'FLp' not found To create a histogram using the traditional graphics, type hist(FLp$Jun, xlab = "June Precip. (in)") ## Error: object 'FLp' not found To create a scatter plot using traditional graphics type plot(FLp$Year, FLp$Apr, ylab = "April Precip. (in)", xlab = "Year") ## Error: object 'FLp' not found To create a time series plot using ggplot() type require(ggplot2) ## Loading required package: ggplot2 ## Warning: there is no package called 'ggplot2' ggplot(FLp, aes(x = Year, y = Apr)) + geom_line() + ylab("April Precip. (in)") + xlab("Year") ## Error: could not find function "ggplot" The geom_line() (geometric line) function represents what you actually see on t