similar to: Wanted: sort.data.frame

I can never remember how to use "order" to sort the rows of a data frame, so like any good, lazy programmer, I decided to write my own function. The idea is to specify a data.frame and a one-sided formula with +/- indicating ascending/descending. For example: sort.data.frame(~ +nitro -Variety, Oats) Since sorting of a data.frame is an oft-asked question on this list, I am posting

I've noticed that a frequently asked question on R-help is how to sort a data frame by multiple columns. Since this question is asked so often, making this task easier for users seems a worthwhile goal. At a minimum, the following changes to the documentation would surely be helpful and reduce email postings to R-help: 1. In the "See Also" section of the help page for

Dear friends, I want to sort a dataset according to one or two variables in the dataset, i thought sort could do it , but failed. e.g. x <- c(2, 9, 18, 3, 2) y<-c(2,5.6,5,9,8) z<-c(21,5,5,19,7) a<-cbind(x,y,z) a x y z [1,] 2 2.0 21 [2,] 9 5.6 5 [3,] 18 5.0 5 [4,] 3 9.0 19 [5,] 2 8.0 7 I want to sort dataset a according to ascending x and descending y, How to

Hi all, I want to order a series that is included on the second column in MCT.csv. I do but R doesn?t order, could be because is a csv? I have prove MCT<-read.csv("MCT.csv") a<-order(MCTor[,2],2,decreasing = FALSE) a<-order(MCTor[,2],1,decreasing = FALSE) or the same with sort but didn?t worked. It is suposed that a will have the ordered on ascending or descending

Hi, This may be a very basic question but it seems i cannot figure it out does not matter what. how do you sort a table (ascending or descending) after the values in one particular column? I want to do something like the sort function in Xcel. Also, is there any other plot function that accepts log for y axes like the parplot2() from gregmisc? Thanks for the tip Marc about barplot2. very

Derar R-people I have troubles understanding what the function sort.list() is doing. On the homepage it says that it returns a permutation which rearranges a vector into ascending or descending order (like order() but on a vector instead of a sequence). > sort.list(c(0, 2, 10, 11, 4)) [1] 1 2 5 3 4 which does not make sense to me. In fact I am getting the same (non-sensical) result using

On Feb 3, 2009, at 5:26 PM, Jonathan Hadders wrote: > I''m trying to implement an FXIconList with multiple columns so that > the list can be sorted in ascending or descending order based on any > of the columns (much like FXFileList, I believe). I ran across an > earlier post of yours (8/5/2003 - http://www.varioustopics.com/ruby/189237-fxiconlist-questions.html) >

Hi, I have a data frame with variables a, b, c (character vars) and t (time var, could be represented as POSIXct or character, depending on which is most useful. The format is "yyyy-mm-dd hh:mm:ss CET"). Now, I want to sort the data frame in ascending order by a, b, c and then in descending order by t. Here's what I've got, but I'm not sure how to put the

Hi, In the order() help file, there is an example like: a <- c(4, 3, 2, NA, 1) b <- c(4, NA, 2, 7, 1) z <- cbind(a, b) (o <- order(a, b)); z[o, ] How can I do something like "order a in ascending order, b in descending order"? And say I have a third vector c, and I'd like to add this to the previous condition "a ascending, b descending, c

What is the best way to sort a dataframe? For example, how would I go about sorting a dataframe (with variables V1-V5) by ascending V1, V2 and descending V3 while retaining V4 and V5. Also, is there a relatively easy way by which to re-order my columns? Thank you for your time. Marc Marc Zodet [[alternative HTML version deleted]]

Hello, I have what seems like an easy question to answer, but I'm struggling with it. I have a set of categorical data that I am reading in, looking something like: "category" "result" "A" .234 "B" .123 "C" .564 "D" -.452 "E" .112 "F" -.106 I'd like to plot this twice on two separate dot charts, once

Dear list, I have a data frame (238304 rows and 6 columns). I want the data frame sorted by two columns in ascending order. I am showing the first 5 rows of the data frame > clones.info[1:5,1:6] USER_CLONE_ID CHROMOSOME Expr1002 KB_POSITION Allele_A WELL_ID 1 SNP_A-1855402 17 41419603 41419603 C rs17572851 2 SNP_A-4249904 17 41420045 41420045 A rs17572893 3 SNP_A-2174835 18 41407760

(Forwarded off-list message) -------- Original Message -------- Subject: Re: [Xapian-discuss] what is the fastest way to fetch results which are sorted by timestamp ? Date: Thu, 11 Aug 2011 01:06:36 +0800 From: ??? <panjunyong at gmail.com> To: Tim Brody <tdb2 at ecs.soton.ac.uk> On Wed, Aug 10, 2011 at 6:39 PM, Tim Brody <tdb2 at ecs.soton.ac.uk> wrote: > Hi, > > In

Hello everyone, I have a matrix of over 40000 line and about 30 columns. For my analysis I would like to add another column with ascending numbers (column header should be "order", and than 1,2,3,4 ....the end of the matrix). During my analysis I reorder them ( due to merge commands by a different column). How do I add such a column in an ascending order (or descending for what it

Dear All, here a problem I think many of you can solve in few minutes. I have a dataframe which contains values of plot id, diameters, heigths and basal area of trees, thus columns names are: id | dbh | h | g head(ipso, n=10) id dbh h g 1 FPE0164 36 13.62 0.10178760 2 FPE0164 31 12.70 0.07547676 21 FPE1127 57 18.85 0.25517586 13 FPE1127 39 15.54 0.11945906 12 FPE1127

I have a dataset I need to sort: test.df<-data.frame(Zone=c("Floodplain", "Lake", "Shoreline"),Cover=c(50,60,70)) However, I don't want it sorted ascending/descending but in an order that I define via a vector: sort.v<-data.frame(c("Lake","Shoreline","Floodplain")) I realize I could probably just create the vector of

Hi R users: I want to know how can I easily sort in descending order a whole data frame by one or several variables. Thank you very much for your help. Kenneth Cabrera krcabrer at perseus.unalmed.edu.co krcabrer at epm.net.co Universidad Nacional de Colombia, Sede Medell?n -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read

The release notes for R 2.0.0 states: It is now possible to specify colours with a full alpha transparency channel via the new 'alpha' argument to the rgb() and hsv() functions, or as a string of the form "#RRGGBBAA". NOTE: most devices draw nothing if a colour is not opaque, but PDF and Quartz devices will render semitransparent colours. A new argument

Hello, I have 2d data where x coordinate is not given in usual ascending order (x1,...,x1+l; l>0), and instead in another, regular, but not ascending or descending order (for illustration: x1,-x1,x1+dx1,-x1-dx1,....).y is an array which corresponds to the way x is ordered. I have noticed that giving 'plot(x,y,type='l') produces a plot where the points are connected in a completely

All, I am using the forestplot function in rmeta. I was able to modify the x axis range by commenting out one line and feeding it two new parameters (I wanted to set zero as the axis start point). #xrange <- c(max(min(lower, na.rm = TRUE), clip[1]), min(max(upper, na.rm = TRUE), clip[2])) #new line xrange <- c(xlow,xhigh) Now I am trying to modify the text font size for