similar to: New column of data filled with the larger value from 2 columns

I'd like to perform some calculations across a series of columns. Is there an easy way to do so? For example, I'd like to calculate the maximum value from columns 6-42. Although I can use, say: pmax(data[,6],data[,7],data[,8], etc.), I'd prefer to be able to do something like pmax(data[,6:42]). Unfortunately, doing so returns 36 columns. Thanks, Tim -- View this message in

Ista, et. al: efficiency? (Note: I needed to correct my previous post: do.call() is required for pmax() over the data frame) > x <- data.frame(matrix(runif(12e6), ncol=12)) > system.time(r1 <- do.call(pmax,x)) user system elapsed 0.049 0.000 0.049 > identical(r1,r2) [1] FALSE > system.time(r2 <- apply(x,1,max)) user system elapsed 2.162 0.045 2.207 ##

This is what I was looking for. Thank you everyone! Sincerely, Milu <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Mail priva di virus. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>

On Tue, Feb 20, 2018 at 11:58 AM, Bert Gunter <bgunter.4567 at gmail.com> wrote: > Ista, et. al: efficiency? > (Note: I needed to correct my previous post: do.call() is required for > pmax() over the data frame) > > > x <- data.frame(matrix(runif(12e6), ncol=12)) > > > system.time(r1 <- do.call(pmax,x)) > user system elapsed > 0.049 0.000

Hello, all, I have a dataframe of three rows and umpteen columns. I want to show the maximum, minimum, and median with a vertical line and a central dot (I'd use a boxplot, but with only three data points, that's overkill; I can't just use points, because of overlap and some of the other data plotted on the graph). This works: > boxplot(data_frame,

Hi, I need to create a data frame containing the results of a number of ANOVA's but I'm having some trouble setting it up (some being enough for me to spend 3 days trying with no progress and be left staring in to the abyss which some people call a weekend, and what I will call 2 quiet days in the office...) The response variable is *V*. I need to do an ANOVA for each *G*. The fixed

Dear R user, I have written a function which returns max,min and variation of a power (see below) Power is a given matrix(1,n) I call the function >Variation<-VAR(p,(n-deltat)) Now the problem is when I want plot(Results[1],Results[2]). Not possible! I become the following error (in english it means: Error in as.double.default(x) :Object cannot be transformed in double) >

It looks like OP uses a data.frame, so in order to use matrixStats (I'm the author) one would have to pay the price to coerce to a matrix before using matrixStats::rowMaxs(). However, if it is that the original data could equally well live in a matrix, then matrixStats should be computational efficient for this task. (I've seen cases where an original matrix was turned into a data.frame

Hello list! I have a problem with the function 'persp'. I have a data set with the variables X -> The X coordenate of the insect Y -> The Y coordenate of the insect deep-> how deep the insect buried into the soil. I would like to have a plot with a surface simulating the way the insect buried. Is it possible? If I type persp(x,y,deep) R gives me this error message Error in

Hi, I am trying to put larger axis labels on my graphs (using cex.axis and cex.label) but when I do this the top of the text on the Y axis goes outside of the window which you can see in this picture -http://twitter.com/#!/robgriffin247/status/142642881436450816/photo/1 - (if you click on the picture it opens a larger version so it is easier to see the problem) is there anyway I can get R to not

Dear R users, Consider the following example function: f = function(a,b) { g = function(x) a*x + b h = function(x) g(x)^2 + x^2 opt = optimize(h,lower = -1, upper = 1) x.min = opt$minimum h.xmin = opt$objective g.xmin = g(x.min) return(c(x.min, h.xmin, g.xmin)) } In my real problem the function that plays the role of "g" is costly to compute. Now, to

I make plenty of scatterplots, especially using scatterplot.matrix from library(car). One thing I don't know how to do is determine which points are plotted last. Sometimes I plot a large number of points for multiple groups represented by different colors. I would like to guarantee that point that are far from the centroid for their group are plotted last. This way they will be

Am I the only one who thinks that it is impractical that the Sphinx intro is buried deep within the lld documentation? I suggest moving it to the Programming Documentation document. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20120616/2cb7356d/attachment.html>

Dear All, I have a data frame with 5 column and 201 row data. I want to add one more column between column 1 and 2 with value of 1. So the new column has to be the second column filled with 1. Any help will be appreciated. Thanks for your time. Thanks & Rg Mohan L

Thank you for your kind replies. Maybe I was not clear with my question (I apologize) or I did not understand... I would like to take the max for X0...X11 and X12...X24 in my dataset. When I use pmax with the function byapply as in byapply(df, 12, pmax) I get back a list which I cannot convert to a dataframe. Am I missing something? Thanks again! Sincerely, Milu

Don't do this (sorry Thierry)! max() already does this -- see ?max > x <- data.frame(a =rnorm(10), b = rnorm(10)) > max(x) [1] 1.799644 > max(sapply(x,max)) [1] 1.799644 Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic

Run this: >p <- c('a', 'c', '', ''); a <- c(10, 20, 30, 40); d1 <- >data.frame(Promoter=p, ip=a) # Note duplicate empty names in p. >p <- c('b', 'c', 'd', ''); a <- c(15, 20, 30, 40); d2 <- >data.frame(Promoter=p, ip=a) >all <- merge(x=d1, y=d2, by="Promoter", all=T) >all <-

Asterisk 1.6 CentOS 5.0 All - I'd like to offer my users the ability to hangup a call by pressing **. I'm using an attendant, so when ** is dialled I'd like processing to return to the attendant so the user can place a subsequent call. I have setup features.conf to include: [featuremap] disconnect => ** My Dial command looks like this:

On 09/08/19 18:24, Matthew Wilcox wrote: > On Fri, Aug 09, 2019 at 07:00:26PM +0300, Adalbert Laz?r wrote: >> +++ b/include/linux/page-flags.h >> @@ -417,8 +417,10 @@ PAGEFLAG(Idle, idle, PF_ANY) >> */ >> #define PAGE_MAPPING_ANON 0x1 >> #define PAGE_MAPPING_MOVABLE 0x2 >> +#define PAGE_MAPPING_REMOTE 0x4 > Uh. How do you know page->mapping would

On 09/08/19 18:24, Matthew Wilcox wrote: > On Fri, Aug 09, 2019 at 07:00:26PM +0300, Adalbert Laz?r wrote: >> +++ b/include/linux/page-flags.h >> @@ -417,8 +417,10 @@ PAGEFLAG(Idle, idle, PF_ANY) >> */ >> #define PAGE_MAPPING_ANON 0x1 >> #define PAGE_MAPPING_MOVABLE 0x2 >> +#define PAGE_MAPPING_REMOTE 0x4 > Uh. How do you know page->mapping would