[R] extracting rows from data frame that approximately equal another data frame
arun
smartpink111 at yahoo.com
Thu Jan 16 22:34:37 CET 2014
Hi,
May be this helps:
x <- data.frame(V1=-1.162877, V2=0.1848928)
set.seed(245)
df <- as.data.frame(matrix(rnorm(5051*2),ncol=2))
cut1 <- cut(df[,1],breaks=c(x[,1]-0.1,x[,1]+0.1))
cut2 <- cut(df[,2],breaks=c(x[,2]-0.1,x[,2]+0.1))
df1 <- df[!is.na(cut1) & !is.na(cut2),]
A.K.
I have a dataframe and would like to extract rows that approximately equal to the values in another data frame.
say I have a data frame called x
dim(x)
[1] 1 2
x
V1 V2
x -1.162877 0.1848928
I would like to search through a larger data frame
called df and extract all rows that approximately equal the two values
in the data frame x by say +- 0.1.
The larger dataframe has these dimensions
dim(df)
[1] 5051 2
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