similar to: select the last row by id group

Hi R-users, Following this post http://tolstoy.newcastle.edu.au/R/help/06/06/28965.html , how do I get last two rows (or six or ten) by id group out of the data frame? Here the example gives just the last row. Sincere thanks, Lauri [[alternative HTML version deleted]]

Hi All, I'm trying to understand the difference between do.call and lapply for applying a function to a list. Below is one of the variations of programs (by Marc Schwartz) discussed here recently to select the first and last n observations per group. I've looked in several books, the R FAQ and searched the archives, but I can't find enough to figure out why lapply doesn't do what

Dear R users: I would like to assign sequence numbers based on group of value but cannot find an easy way. Here is a simple instance: > id = c('a','a','a','b','c','c') > id [1] "a" "a" "a" "b" "c" "c" I hope to create a corresponding vector as -- [1] 1 2 3 1 1 2 That

Hi, I want to produce a pie chart with titles. I used the following code. So it created a pie chart for the percentage of the score for ID="002". ID <- c("001","001","002","002","002","003","003","003","004","004","005","005","006") test <-

Dear List, I have a list of 600+ *.gz files that I would like to extract and read the geotiffs contained within them. I tried using the untar() function to simplify this task but I am stumped by an error. I've combed the Internet for a solution without luck. The details are below, and any help in solving this matter is appreciated. > files = list.files(path = "J:/GIMMS/NDVI",

i have a large longitudinal data set. The number of observations for each subject is not the same across the sample. The largest number of a subject is 5 and the smallest number is 1. now i want to make each subject to have the same number of observations by filling zero, e.g., my original sample is id x 001 10 001 30 001 20 002 10 002 20 002 40 002 80 002 70 003 20 003 40 004 ...... now i wish

Hi, Dear R- community, I am use the intToChar function to convert the integers to letters. But the output is mess. Can you guys give some suggestions? Thanks! > outcome.predict [1] 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 7 4 4 4 4 4 4 4 4 [26] 4 4 4 4 4 4 4 4 4 4 4 4 4 4 7 4 4 4 4 4 7 4 4 4 4 [51] 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4

Hi, I am developing a tool for converting a large data frame stored in an uncompressed binary (XDR) RData file to a delimited text file. The data frame is too large to load() and extract rows from on a typical PC. I'm looking to parse through the file and extract individual entries without loading the whole thing into memory. In terms of some C source functions, instead of doing

Have had no issue until I ran apt-get dist-upgrade this morning: # /lib/nut/newhidups -u nut -DDDDDD auto Network UPS Tools: 0.28 USB communication driver 0.28 - core 0.30 (2.0.5) debug level is '6' Checking device (0000/0000) (001/001) - VendorID: 0000 - ProductID: 0000 - Manufacturer: unknown - Product: unknown - Serial Number: unknown - Bus: 001 Trying to match device Device does not

I'm using a bit of a different keyboard, the infinity ergodox [ https://input.club/devices/infinity-ergodox/]. It functions just fine as a keyboard on my host computer, but when I try to bind it to the guest, nothing seems to happen. lsusb gives its ID: Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub *Bus 005 Device 003: ID 1c11:b04d* Bus 005 Device 001: ID 1d6b:0002 Linux

Dear R-Users I have the following matrix > out$desc [,1] [,2] [1,] "" "" [2,] "y_{01}(k-001)" "" [3,] "y_{01}(k-002)" "" [4,] "y_{01}(k-003)" "" [5,] "u_{01}(k-001)" "" [6,] "u_{01}(k-002)" "" [7,] "u_{01}(k-003)" ""

Hey List, Firstly I am sorry for the length of this email and that you are all having too receive it but the point is that this email will now go into the archive and be indexed by Google (hopefully) and thusly, people will be able to find these links through Google. My goal is to mirror CentOS on RapidShare. "Why you fool there are loads of mirrors?" you might ask; simply for

Hi Please could someone assist me? I?e got a 3g usb dongle - Huawei E1552. [root@]# lsusb Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 002: ID 03f0:8407 Hewlett-Packard Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus

Hello, Just baught this ups to replace an Ellipse. I've had a look at the nut hardware compatibility list, it's fully compatible and uses the same driver as ellipse (usbhid-ups) Here is the error I get when I "/usr/bin/upsdrvctl start" : Network UPS Tools - UPS driver controller 2.6.5-Unversioned directory Network UPS Tools - Generic HID driver 0.37 (2.6.5-Unversioned

Hello, I am trying to update to dahdi 2.2.1. But somehow the xorcom (2BRI) device does not want to work. I pasted below the information I have. pbx at loicvoip1:~# /usr/share/dahdi/xpp_fxloader reset pbx at loicvoip1:~# /usr/share/dahdi/xpp_fxloader usb 'xpp_fxloader'[4937]: --------- FIRMWARE LOADING: (usb) [1 devices] ..Got all 1 devices 'xpp_fxloader'[5003]: ---------

I bought a new CyberPower CP850AVRLCD ups, connected it to a usb port and I'm trying to use it with hal. I installed [root at phoenix ~]# rpm -q nut nut-client nut-2.2.0-6.1.fc8 nut-client-2.2.0-6.1.fc8 lsusb sees it: [root at phoenix docs]# lsusb Bus 001 Device 001: ID 0000:0000 Bus 005 Device 002: ID 0c45:1050 Microdia Bus 005 Device 001: ID 0000:0000 Bus 004 Device 001: ID 0000:0000

Hi BACKGROUND INFO:I have a new Eaton 5E 1100i USB UPS which their website claims is supported on Linux. They don't provide software for it for Linux, only for Windows.Referring links: https://www.eaton.com/za/en-gb/catalog/backup-power-ups-surge-it-power-distribution/Eaton_5E_UPS.html https://www.eaton.com/za/en-gb/skuPage.5E1100IUSB.specifications.html It was manufactured in May 2020

Hi! all. I have been reading every mail and news about nut and 06da:0002 Phoenixtec but not found a solution. I have a very nice working ups from: CENER ref: "Active 1000VA 230V 12 CENER" and front logo "LA 900" It has COM3 and USB plugs, I don't know if it needs a standar RS232 I have test with varius drivers in ups.conf [MyUPS] driver = bcmxcp_usb | usbhid-ups |

Hi Arnaud, Any luck with the latest subversion trunk? From: Greg Sent: Wednesday, May 13, 2009 10:34 PM To: Greg ; Arnaud Quette Cc: Kjell Claesson ; nut-upsuser at lists.alioth.debian.org Subject: Re: [Nut-upsuser] Nut and PowerWare 5115 Hi Arnaud, Some more testing on Ubuntu 9.04. Here is the output of bcmxcp_usb and lsusb ============================================ root at

llvm-diva - Debug Information Visual Analyzer Carlos Alberto Enciso, Sony Interactive Entertainment LLVM supports multiple debug information formats (namely DWARF and CodeView) in different binary formats (e.g. ELF, PDB, Mach-O). Understanding the mappings between source code and debug information can be complex, and it's a problem we've commonly encountered when triaging debug