similar to: How to replace match words whith colum name of data frame?

Dear ?, I'm sure that there are many ways to do what you want; here's one: > cbind(concept_df, category= + ifelse(apply( + sapply(chemical_df$chemical, + function(x) grepl(x, concept_df$concept)), + 1, any), + "chemical", "")) concept category 1 butan

I have two data frame. I want to use "chemical_df" to match "concept_df " concept_df <- data.frame(concept=c("butan acid ", "nano diamond particl", "slurri composit", "composit ph polis", " inorgan particl ", "grind liquid", "liquid formul", "nanoparticl", "size abras particl",

Hi-- concept_df$NewCol <- ""; kw <- "acid|ph"; bb <- grepl(kw,concept_df$concept) concept_df[dd,2] <- "chemical" The is a bit late but it accomplish the same with base R. Good luck--EK PS.. my email doesn't accept reply [[alternative HTML version deleted]]

I'm running a rare events logit model in R using the Zelig package and am getting some of the oddest error messages that I can't figure out. y = rnorm(100) x = c(rep("0",1), rep("1",99)) d = data.frame(won=x, bid=y) d mod1 <- zelig(y~x, model="relogit", data=d, tau=1/100, case.correct="prior", bias.correct=TRUE, robust=TRUE) > mod1 <-

Hi all, I''m trying to build a routine that generates table rows with the appropriate field types (text_area and text_field for now), and filters out the ''created_at'' and ''deleted_at''. <% for column in Project.content_columns %> <tr class="ListLine<%= cycle("0","1") %>"> <td><%=

Hello folks, i installed asterisk 1.8 from repo: https://wiki.asterisk.org/wiki/display/AST/Asterisk+Packages And Looked at this article about CDR in mysl. http://www.voip-info.org/wiki/view/Asterisk+cdr+mysql I installed asterisk-mysql pacakge from debian repo. The cdr in mysql is working, but i can not get cdr adaptive colums are not, i use this in my extension.conf exten =>

Hi all, Imagine I have a matrix G with N rows and M columns So L=NxM is the number of different cells in my matrix. I want to create a column vector F whose size will be F(L,1) So the fisrt row in F is G(1,1) Second row in F is G(1,2) When we arrive to a point M the element M+1 will be G(2, 1) Element M+2 will be G(2,2) and so on. I´m trying but allways error.... Easy Example: G= 2 3 4

I am importing CSV data with thousands of rows, if any row contains an error from excel, the whole program crashes, so i need to delete all rows with the value of #VALUE!, all other values are non-numeric... I've tried a bunch of strategies, but nothing seems to work. Thanks ahead of time guys, Best, Cody -- View this message in context:

Hi all, I was just radomly playing with R and got the following error when trying to filter a data frame using a string: > Angel <- c(7,8,6,9,10) > Buffy <- c(8,9,4,9,10) > Firefly <- c(9,9,10,10,10) > DrHorrible <- c(10,9,9,10,10) > my.df <- data.frame(Angel, Buffy, Firefly, DrHorrible) > my.df["DrHorrible"] DrHorrible 1 10 2 9 3

Hello, I am a biologist and I am dealing with files composed of columns with T or A or C or G (example below) Sometimes a column is composed of only "T" and in that case, the columns becomes a logical column TRUE (example below) I know that the argument "as.is" controls the turns off turning a column into a factor, instead becoming a character Is there something similar for

Hi, Hopefully someone can point me in the right direction on how I would go about solving the following. I have some data and need to find the column name of the maximum value in each row. This could be the data... > a <- data.frame(x = rnorm(4), y = rnorm(4), z = rnorm(4)) > a x y z 1 1.6534561 0.11523404 0.2261730 2 -1.2274320 -0.24096054 1.5096028

Hi all: Can someone help me count the number of rows with values in colum "a" only. assume the name of my dataframe is "weekly" I was trying i<- nrows(weekly$a) i but returns 7 when it should be 4. Thanks a b c d 27.000 27.000 1.569 0.013 160.000 27.000 1.632 0.013 146.000 27.000 1.830 0.015 70.000 27.000 2.475 0.019

Hi I get the following when I try and run "rake db:migrate" (I"m running un Ubuntu linux) ********** code ********** (in /<home hidden>) == AddRpts: migrating ========================================================= -- add_column("rpts", :integer, {:limit=>3}) rake aborted! You have a nil object when you didn''t expect it! You might have expected an

I have data.frame's with IDs and multiple columns. B/c some of IDs showed up more than once, I need sum up colum values to creat a new dataframe with unique ids. I hope there are some cheaper ways of doing it... Because the dataframe is huge, it takes almost an hour to do the task. Thanks so much in advance! Young # ------------------------- examples are here and sum.dup.r is at the

I''m having trouble getting a second drop down populated based on the value from the first drop down. I''ve tried following some of the examples posted, but haven''t had any success. I''m new to RoR so any help would be appreciated. When the first drop down''s value gets changed, it calls the correct method in the controller and even finds the correct

Hi Folks, First, the important information. > sessionInfo() R version 2.12.1 (2010-12-16) Platform: i386-pc-mingw32/i386 (32-bit) Second, my problem. I have a series of data sets comprised in the following format. > totsoc Location Year Value 1 SOUTH 1998 29 2 SOUTH 1999 20 3 SOUTH 2000 32 4 SOUTH 2001 29 5 SOUTH 2002 25 6 SOUTH 2003 28 7

I rarely work with dates in R, so I know very little about the POSIXct and POSIXlt classes. I'm importing an excel file into R using the RODBC package, and am having issues reformatting the dates. 1. The important info: > sessionInfo() R version 2.12.2 (2011-02-25) Platform: i386-pc-mingw32/i386 (32-bit) locale: [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United