similar to: Conditional variable assignment

Hello, I need to create a dataframe containing all possible combinations of three variables: SITE (101,102,103,104), WDAY (MON,TUE,WED,THR,FRI), and TOD (MORN, AFTN). There should be a total of 40 unique combinations in my dataframe. I used expand.grid() successfully(?) to create my dataframe, but then when I went to order it by SITE, the resultant dataframe only contained four rows, one for each

R experts, I need to sample two rows without replacement from the following data frame such that neither row contains the same 'DOW'. For example, I cannot select both a Monday morning and a Monday afternoon. I am using STRATA_NUM as an index to randomly select rows from, since this variable indexes all unique permutations of DOW, SITE, and TOD. I know how to use the sample function

I am wrestling with time and date data. I came up with a way to plot and label a histogram with "time of day" on the x-axis, but it seemed like a lot more work than should be necessary. Is there a better way to do what I am trying to do? require(chron) # read input data data = read.table("input.dat", header=T) # Create date-time and chron objects datetime =

Hello everyone, My progress has stalled on finding a way of creating a somewhat complicated variable to add to my existing dataframe and I am hoping one of you could help me out. The dataframe below contains only a fraction of the data of my complete dataframe, but all of the variables. What I want to do is add another variable named 'WEEK' to this dataframe that is assigned 1 for row 1

R Experts, I would like to create a series of variables without having to assign a separate line of code for each new variable. My dataframe (DF) contains two groups of linked variables (ESP1:ESP9) and (ECRL1:ECRL9). Within ESP1:ESP9 are abbreviated species codes (full dataframe contains 26 codes). ECRL1 represents the number of species x in variable ESP1 harvested, and so on through ESP9 and

Question: 1: What is .Mod and .Tod video? 2: How to convert .Mod and .Tod video to AVI, MPG, WMV, MPEG? Answer: 1: .Mod and .Tod videos are mainly produced by digital harddisk camcorder such as JVC camcorder and so on. It is not common video formats and can only be played on some special players. 2:Tipard Mod Converter (http://www.tipard.com/mod-converter.html)Windows and Tipard Mod Converter for

Fellow R users, I am stumped on what would seem to be something fairly simple. I have a dataframe that has a variable named 'WEEK' that takes the numbers 1:26 (26 week time-period) with each number repeated five times consecutively (once for each weekday, Monday through Friday). Ex. 111112222233333.....2626262626. I would like to randomly extract two weekdays per five day week for

R community: Hello, I would to like to convert a character date variable from %m/%d/%Y to %m/%d/%y. Any advice would be greatly appreciated. I have tried functions for changing the formatting and removing the unnecessary digits without success. Mike

Hello there, Using R 2.4.0 on Solaris (Unix): I am trying to control the X axis range on a simple time of day plot. I made a test program (below) that gets file time stamp information from the files in the directory where R starts. The goal of the test program is to plot the time of day of file creation on an x axis that spans a user-specified range (like 12:00:00 to 15:00:00). If I allow

Hi all I have a data frame with duplicate columns and i want to remove duplicates by adding rows in each group of duplicates, but have lots of NA's. Data: dfrm <- data.frame(a = 1:4, b= 1:4, cc= 1:4, dd=1:10, ee=1:4) names(dfrm) <- c("a", "a", "b", "b", "b") dfrm[3,2:3]<-NA dfrm a a b b b 1 1 1 1 1 1 2 2 2 2 2 2 3

All, I have a question about calculating the value for the -E stride option to mke2fs. The mke2fs man page says stride=stripe-size Configure the filesystem for a RAID array with stripe-size filesystem blocks per stripe. So stride = size of stripe/blocksize. The size of a stripe is the RAID chunk size * the number of drives in the RAID. My question: are parity disks

https://bugs.freedesktop.org/show_bug.cgi?id=69594 Priority: medium Bug ID: 69594 Assignee: nouveau at lists.freedesktop.org Summary: NVA3 - Flash overlays all tabs Severity: normal Classification: Unclassified OS: Linux (All) Reporter: tod.jackson at gmail.com Hardware: x86-64 (AMD64) Status:

Hi, Does anyone know how to add minutes (up to 100 min) to a 24 hour time, to create a new 24 hour time? I can't seem to find any documentation or examples explaining how to do this. The variables of interest are 'ARRIVE','WAIT', and 'DEPART' in the attached partial dataframe. I want 'DEPART' to be the "sum" of 'ARRIVE' and 'WAIT' in

Hi, R-users, I met a problem: Items:[Anna 'moi =) akku loppu joskus 4ltä. Kestää kauan nää..'\tAmer, Tuusula (0:20)\t20\t12\t16\t00\t00\t11]/Anne 'Ei jakoa,uus päivä muistio et 4n niin peruin. Hups'\t (0:16)\t0\t12\t18\t00\t00\t11/Elina 'Konsertissa. En tod. vastaa teille'\tEtu-Töölö, Helsinki (2:40)\t24\t12\t18\t00\t00\t11 I want to parsing the above data into the

R experts, Hello, I am trying to sample a vector 1:40 without replacement such that no element in the new vector is within 7 units of either of its immediate neighbors. This is part of a larger program I am working on. The following code works well about 65 % of the time (14/40). The problem I encounter happens when the last element remaining to be sampled from the vector STRATA is within 7

I'm learning asterisk, and decided to make myself an answering machine out of it. Seems pretty straightforward to use an agi (perl) to do what I want. What I want is: Answer the phone. check for time of the day If TOD is during the time I sleep I announce i'm sleeping & prompt caller to dial1 (or whatever) to connect to my extension & then go to voicemail if busy/una,

https://bugs.freedesktop.org/show_bug.cgi?id=69346 Priority: medium Bug ID: 69346 Assignee: nouveau at lists.freedesktop.org Summary: nouveau card permanently stays in D3 on VT switch with Optimus laptops Severity: normal Classification: Unclassified OS: Linux (All) Reporter: tod.jackson at

Hello, I have a dataframe that looks like this: a b NA Honduras China NA NA Sudan Japan NA NA Mexico NA Mexico I would like to replace the NA values in column b with the non-NA values in column a. I have tried a number of techniques, (if, ifelse) but I must have the logic wrong. Thanks -- Josh [[alternative HTML version deleted]]

Well, here's one way to do it: (dat is your example data frame) Cutoff <- seq(0, .15, .01) Pop <- with(dat, sapply(Cutoff, \(p)sum(Totpop[Pct >= p]))) I think there must be a more efficient way to do it with cumsum(), though. Cheers, Bert On Sat, Oct 14, 2023 at 12:53?AM Jason Stout, M.D. <jason.stout at duke.edu> wrote: > > This seems like it should be simple but I

Hi everyone, My question will probably seem simple to most of you, but I have spent many hours trying to solve it. I need to perform a series of sequential calculations on my dataframe that move across rows and down columns, and then repeat themselves at each unique 'MM' by 'DD' grouping. Specifically, I want to add 'DEPART' time (24 hr time) to 'TRAVEL'(minutes)