similar to: Accomplishing a loop on multiple columns

Dear all, I have a question about the knowing for which row I have the max value of one of my variables. I calculated the Rsquared for different columns and made a list to gather them. I unlisted this list to create a vector with this values. I want to know for which column I have the max value of Rsquared. The columns were always named in the same way. They always start with results4$depth_

Dear all, I have a question concerning manipulating data of several columns of a dataframe at the same time. I manage to do it for one column (with the use of the specific name for this column). In each columns, I have 60 values. But I should reorganize the values (because I created this as an output before and I want to compare it with an other dataset). I want that the value on row 2 becomes

Well, it is clear enough that the problem is in interpreting the documentation. However, when you claim you tested something, and found it inconsistent with tables, it would be advisable to back it up with examples! The description in the help files and in the sources is admittedly confusing. The original paper has this, rather more clear, description in the abstract: "We consider the

What functions exist for differentiating a numeric vector (in my case spectral data)? That is, experimental data without an analytical function. ie, > x <- seq(1,10,0.1) > y=x^3+rnorm(length(x),sd=0.01) #although the real function would be nothing simple like x^3... > derivy <- .... I know I could just use diff(y) but it would be nice to estimate derivatives at the

Dear R Plots without par arguments do start not at zero (means, the box around is somwhere outside the specified plotrange). How to start really from zero, pe. basline y=0? every standart par works like this: x<-seq(1,10,0.1) y<-sin(x) plot(sin(x)) Thanks for help Marc -- Ist Ihr Browser Vista-kompatibel? Jetzt die neuesten Browser-Versionen downloaden:

You reall have only one parameter in your model, c = a/b. You can't identify both a and b from your model, therefore, you should fit the linear model: lm(z ~ c* sin(x)/x) Ravi. ----- Original Message ----- From: cstrato <cstrato at aon.at> Date: Monday, February 2, 2004 2:28 pm Subject: [R] Robust nonlinear regression - sin(x)/x? > Dear all > > Since I did not receive any

I've searched to find examples of how to work with the C versions of optim. I've separated out the function just to test on it alone, and currently I'm attempting to use fmmin as follows: !~~CODE ~~! double optimfn(int n, double *par, void *ex) { double * lambda = (double*)malloc(sizeof(double)*n); double sum = 0; for(int i =0; i < n; i++) { lambda[i] =

On 12/23/14 2:08 PM, Eric Blake wrote: > On 12/23/2014 11:35 AM, Gary R Hook wrote: >> On 12/22/14 4:50 PM, Eric Blake wrote: >>> On 12/22/2014 03:27 PM, Gary R Hook wrote: >>>> I am experimenting with the blockcopy command, and after figuring out >>>> how to integrate qemu-nbd, nbd-client and >>>> dumpxml/undefine/blockcopy/define/et. al. I

On 12/23/14 6:17 AM, Kashyap Chamarthy wrote: > On Mon, Dec 22, 2014 at 03:50:58PM -0700, Eric Blake wrote: >> On 12/22/2014 03:27 PM, Gary R Hook wrote: >>> I am experimenting with the blockcopy command, and after figuring out >>> how to integrate qemu-nbd, nbd-client and >>> dumpxml/undefine/blockcopy/define/et. al. I have one remaining question: >>>

On 1/8/15 2:21 PM, Kashyap Chamarthy wrote: >> qemu-img create -f qcow2 /tmp/dsk.test.qcow2 > > A typo? You also need to provide a size here: > > $ qemu-img create -f qcow2 /tmp/dsk.test.qcow2 1G Yes, my mistake. The size is set to the potential size of the source disk, which in this case is 20G. > For the rest, I'm afraid I still didn't manage time to test

On 1/8/15 2:48 PM, Eric Blake wrote: > On 12/23/2014 05:24 PM, Gary R Hook wrote: >> I read that article. >> >> Now shut down the domain (post-pivot) which is using the new disk file, >> and start it up, without using a block device. This is the part that no >> one seems to write about, nor do I see that in your example. But thank >> you very much for your

On 12/22/2014 03:27 PM, Gary R Hook wrote: > I am experimenting with the blockcopy command, and after figuring out > how to integrate qemu-nbd, nbd-client and > dumpxml/undefine/blockcopy/define/et. al. I have one remaining question: > > What's the point? Among other uses, live storage migration. Let's say you are running on a cluster, where your VM is running locally but

On 12/24/14 4:42 AM, Kashyap Chamarthy wrote: > On Tue, Dec 23, 2014 at 12:38:57PM -0600, Gary R Hook wrote: > > [. . .] > > In my case, the block device is a QCOW2 disk image file. If I boot > without using the disk image file which has the operating system, the > domain will fail to boot, no? > > I see you're playing with NBD disks. I'll admit, I haven't

Hi, I have following dataframe. Column A indicates months. DF <- structure(list(A = c(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 1, 2, 3, 4, 5, 7, 8, 11, 12, 1, 2, 3, 4, 5, 8), B = c(0, 0, 0, 8, 0, 19, 5, 19, 0, 0, 0, 11, 0, 8, 5, 11, 19, 8, 11, 10, 0, 8, 36, 10, 16, 10, 22)), .Names = c("A", "B"), class = "data.frame", row.names = c("1",

On Mon, Dec 22, 2014 at 03:50:58PM -0700, Eric Blake wrote: > On 12/22/2014 03:27 PM, Gary R Hook wrote: > > I am experimenting with the blockcopy command, and after figuring out > > how to integrate qemu-nbd, nbd-client and > > dumpxml/undefine/blockcopy/define/et. al. I have one remaining question: > > > > What's the point? > > Among other uses, live

Hello everyone, Although we use CentOS primarily on our servers, this query is actually more of a general networking question than something specific to CentOS. In the next week or so, we shall be migrating our in-house servers to a data center. While we're doing that, we'd like to show a "Site down for maintenance" message while the servers that hosts our websites (we have

On 12/23/2014 05:24 PM, Gary R Hook wrote: > I read that article. > > Now shut down the domain (post-pivot) which is using the new disk file, > and start it up, without using a block device. This is the part that no > one seems to write about, nor do I see that in your example. But thank > you very much for your help and your articles; very much appreciated. What do you mean by

On 01/08/2015 12:44 PM, Gary R Hook wrote: > I've learned how to use the blockcopy command to create a local copy in > a simple disk file: > > virsh dumpxml my_domain > my_domain.xml > virsh undefine my_domain > virsh blockcopy --domain my_domain vda $PWD/dsk.copy.qcow2 --wait > --verbose --finish > virsh define my_domain.xml > > and the resulting copy in

On Thu, Jan 08, 2015 at 01:44:58PM -0600, Gary R Hook wrote: > On 12/24/14 4:42 AM, Kashyap Chamarthy wrote: > >On Tue, Dec 23, 2014 at 12:38:57PM -0600, Gary R Hook wrote: > > > >[. . .] > > > >In my case, the block device is a QCOW2 disk image file. If I boot > >without using the disk image file which has the operating system, the > >domain will fail

Here is the code in question: describe UsersController do render_views … … describe "POST to ''create'' action" do describe "failure" do before(:each) do @attr = { :name => '''', :email => '''', :password => '''', :password_confirmation =>