Displaying 4 results from an estimated 4 matches for "merge_recurse".
2013 Apr 21
2
how to import several files every day
....files(path="pathtofile", full.names=TRUE)
library(plyr)
import.list <- llply(filenames, read.table, header=TRUE, sep="",
na.strings="NA", dec=".", strip.white=TRUE)
#
#MERGE and RESHAPE some of the files have different columns
library(reshape)
data3 <- merge_recurse(import.list)
#
At the end of each day I will export the file as a cvs file in a different
folder.
My question is how can I import on day 2 (day3, day4, etc) the new files in
the folder but without importing the files already imported from the
previous days.
any help would be appreciated
martin...
2011 Feb 10
2
for loop to merge .csvs
So I needed to merge 17 .csv files, and did so by brute force, but I might
need to do so again. Anyone have suggestions for a for loop that might do
the below for me (where a:r are separate .csv files)
ab<-merge(a,b,all=TRUE)
cd<-merge(c,d,all=TRUE)
ef<-merge(e,f,all=TRUE)
gh<-merge(g,h,all=TRUE)
ij<-merge(i,j,all=TRUE)
kl<-merge(k,l,all=TRUE)
no<-merge(m,n,all=TRUE)
2012 Dec 17
3
Merge more than 2 dataframe
Hello.
I have for example 4 or more dataframe which like such this example:
date value
2006-11 0.4577647
2006-12 NaN
2006-10 0.1577647
2006-11 0.3577647
2006-12 NaN
2007-01 NaN
2007-02 NaN
2007-03 0.2956429
2007-01 0.3677647
2007-02 NaN
They have the same length. I need merge by date undefined number of
dataframes. End result output will look like
2012 Dec 28
3
Merging data tables
Hi all,
I am trying to merge several data sets and end up with a long data
format by date & time so I can run correlations and plots. I am using
Deducer as an R GUI but can just use the R console if easier.
The data sets are weather with wind speed, relative humidity and
temperatures by date and minute and bat activity with date, time, label,
and an activity index number. The bat