similar to: Reorganize data frame

Dear R Helpers, I have run into a problem trying to perform a number of actions on a set of quantmod data objects through a loop and I am hoping that this is an easy problem for someone else as opposed to very difficult for me. The example task is to get the first three objects of the quarterly balance sheet for a number of companies from the getFinancials object and put them together into a

Dear experts, I?ve been on this for weeks now, and couldn?t find a solution..Sorry for the long description. I figured I post many details, so you get the problem entirely, although it?s not hard to grasp. **Situation:** Data frame consisting of 4 million entries (total size: 250 MB). Two columns: `ID` and `TEXT`. Text strings are each up to 200 characters. **Task:** Preprocessing the text

Hey guys, i want to calculate the continuasly compounded returns for stock prices. Formula for CCR: R_t = ln(P_t/P_{t-1})*100 With R: First i have to modify the vectors, so that they have the same length and we start at the second observation. log(GOOG1[-1]/GOOG1[1:length(GOOG1)-1])*100 That does work with normal vectors. My Questions: 1) I want to use this for stock prices. so i

Dear R-helpers, In the following example I compute ret and returns the SAME way. In ret I use compute returns for EACH column and in returns I do it for the whole data frame. Could someone please tell me why I see a lagged result,by which I mean ret and returns are different by one lag. getSymbols("GOOG",src="yahoo") ret<-apply(GOOG,2,function(x) diff(log(x)) / lag(x,1) )

I have a data.frame named "df". The dput of df is at the bottom of this e-mail. What I'd like to do is replace the "n/a " values with NA. On Mac OSX, it works to do this: df[df == "n/a"] <- NA However, it does not work on Ubuntu. See below. Thanks in advance, Garrett > x <- df[27, 4] # complete data.frame dput is below > dput(x) "n/a?"

Can someone please tell me why the following (last line) doesn't work (as I expect it to :-) library(quantmod) a = getSymbols("MSFT",from="2009-3-01") a MSFT eval(as.name(a)) MSFT$MSFT.Adjusted b=paste(a,'$MSFT.Adjusted',sep='') b eval(as.name(b)) Why does this last line not work the way the earlier eval does? Thanks.

i have time series of momentum signal. I want to get the date of each of the "-1" signal period. for example , the first period of -1 signal begins on 2005-9-21 and ends on 2005-9-28. 2nd period of -1 signal begins on 2005-09-30 and ends on 2005-10-28. Thx Cameron date Px 200MA Signals 2005-09-15 26.27 25.83865 1 2005-09-16 26.07 25.83275 1

Dear All, While i am trying convert data frame object to zoo object I am getting numeric(0) error in performance analytics package. The source code i am using from this website to learn r in finance: https://faculty.washington.edu/ezivot/econ424/returnCalculations.r # create zoo objects from data.frame objects dates.sbux = as.yearmon(sbux.df$Date, format="%m/%d/%Y") dates.msft =

Hello, I was hoping someone might be able to tell me why IOMMU does not seem to be found on my system. At the very least is there any way I can get more debug information in addition to adding iommu=verbose to the command line? Xen 4.0.0 MSI 890FXA-GD70 (I spoke with an MSI representative who confirmed that this motherboard does support IOMMU) AMD Phenom II 1090T x6 # dmesg __ __

Hi all I have installed quantmod package but when I try to obtain GOOG data appers this message: Can anyone inform why itappears? I type getSymbols("GOOG",src="google") Thanks and Best Regards for all Error en download.file(paste(google.URL, "q=", Symbols.name, "&startdate=", : no fue posible abrir la URL '

Package: xen-hypervisor-3.0.3-1-amd64 Version: 3.0.3-0-2 Severity: important On a machine with 2 dual-core Opterons and 16GB of memory, only about 3GB is detected by the hypervisor. Transcript: root at thismachine:~# xm dmesg Xen version 3.0.3-1 (Debian 3.0.3-0-2) (ultrotter at debian.org) (gcc version 4.1.2 20061028 (prerelease) (Debian 4.1.1-19)) Fri Nov 3 00:21:27 CET 2006 Latest

Hi All! I am interested in testing whether the means for the data I am investigating are equal to a specific value - let's say 0.01. I have already run a one-way ANOVA and know that the differences in the means are not significant, so now I want to know what values the means take on. "otestme" is the data I am working with (it would be hard for me to get into a form that would be

Hi, I have what I think is an easy question. I have a data frame, called stockdata, of stock prices that looks like this: date ticker close 1 01/02/1998 GE 24.667 2 01/05/1998 GE 25.104 3 01/06/1998 GE 24.771 4 01/07/1998 GE 24.979 5 01/08/1998 GE 24.750 6 01/02/1998 HIT 71.125 7 01/05/1998 HIT 72.313

I am trying to aggregate data in column 2 to identifiers in col 1 eg.. take this> identifier quantity 1 10 1 20 2 30 1 15 2 10 3 20 and make this> identifier quantity 1 45 2 40 3 20 Thanks in

This morning someone tried to make sip call through my Asterisk. My server just drop these calls and record them in CDR with IP address: 2012-11-28 06:30:51 SIP/216... 1000 "1000" <1000> Hangup 999011972592249388 ANSWERED 00:01 Hacker: 168.63.67.239 2. 2012-11-28 06:30:49 SIP/216... 1000 "1000" <1000> Hangup 88011972592249388 ANSWERED 00:01 Hacker:

Hello all, I have a problem getting a working VNC console for HVM guests on Xen 4.1. When I start the DomU with xm create everything is fine the DomU runs and in xm list it has the running state but when I try to connect to the VNC console to install an operating system (Ubuntu and Debian I have tested) the VNC viewer only shows a black screen. So I searched in the logs and found a log entry

Hello, I have been working sometime now on getting a HVM accepting a PCI card from the host. As was said in the VT-D wiki I bought an ASUS P5E VM DO motherboard (rel 0803) which has the VT-D option in the bios. I want to pass a Hauppauge PVR 500 card to a virtual machine running LinuxMCE. After first trying XEN 3.2.1 which did not enable the "VT-D virtualisation" bit in xm dmesg, i

On Tue, 2012-07-17 at 09:04 -0700, Greg KH wrote: > On Sat, Jul 14, 2012 at 01:34:06PM -0700, K. Y. Srinivasan wrote: > > Format GUIDS as per MSFT standard. This makes interacting with MSFT > > tool stack easier. [] > > diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c [] > > @@ -147,7 +147,7 @@ static ssize_t vmbus_show_device_attr(struct device *dev, >

On Tue, 2012-07-17 at 09:04 -0700, Greg KH wrote: > On Sat, Jul 14, 2012 at 01:34:06PM -0700, K. Y. Srinivasan wrote: > > Format GUIDS as per MSFT standard. This makes interacting with MSFT > > tool stack easier. [] > > diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c [] > > @@ -147,7 +147,7 @@ static ssize_t vmbus_show_device_attr(struct device *dev, >

Dear Sir, Thanks for your mail and help. I got this error while trying to run your code. sbux1.z <- read.csv.zoo(u, FUN = as.yearmon, format = fmt) Error in read.table(file = file, header = header, sep = sep, quote = quote, : 'file' must be a character string or connection Thanks and Regards, Upananda Pani On Tue, Sep 19, 2017 at 4:31 PM, Upananda Pani <upananda.pani at