Displaying 5 results from an estimated 5 matches for "datasubset".
2011 Mar 15
3
create data set from selection of rows
Readers,
For a data set:
text1,23,text2,45
text1,23,text3,78
text1,23,text3,56
text1,23,text2,45
The following command was entered:
datasubset<-data.frame(dataset[,3]=="text3")
The result of
datasubset
is
TRUE
TRUE
The required result is
text1,23,text3,78
text1,23,text3,56
What is the correct command to use please?
Thanks in advance.
2012 Oct 29
2
naming datasubsets in a loop
Hello everbody,
I want to generate different subsets of my data-set and safe this
subsets with names listet in a vector. Because in reality I have got
about 70 subsets I want to realize this in a loop
Somehow like this:
names=c("nam1",
2008 Oct 13
2
Subset based on items in a list.
...umns ("ID") in my data frame contains a
list of ids, many of which appear more than once. I'd like to find the
subset of my data frame for which "ID" matches one of the numbers in
"ID_list." I'm pretty sure I could write a function to do this--something
like:
dataSubset<-function(df, id_list){
tmp = data.frame()
for(i in id_list){
for(j in 1:dim(df)[1]){
if(i==df$ID[j]){
tmp<-data.frame(df[j,])
}
}
}
tmp
}
but this seems inefficient. As I understand it, the subset functi...
2012 Mar 15
2
ggplot2: goem_smooth and suppress messages
Hi
When I run my script using ggplot and geom_smooth I get messages that I
would like to suppress:
p <- ggplot(dataSubset)
p <- p + aes(x = as.Date(factor(key),format="%Y%m%d")) + geom_line()
p <- p + geom_smooth(span=0.2,se=FALSE,size=0.7)
The messages look like this:
geom_smooth: method="auto" and size of largest group is <1000, so using
loess. Use 'method = x' to change the smo...
2011 Sep 08
2
help subsetting data based on date AND time
...m to cast the NewDateTime field correctly (at least it
appears to be in the correct format, and I assume R sees the field as a date
and a time) but I am then unable to subset the data using instructions such
as:
with(DataSet, subset(DataSet, DataSet$NewDateTime < '2004-08-05 14:15:00'))
DataSubset <- subset(DataSet, DataSet$NewDateTime < '2004-08-05 14:00:00',
select = DataSet)
I have tried also separating the date and time fields in the input file, and
casting with instructions such as:
DataSet$NewTime <- strptime(DataSet$Time, '%H:%M:%S')
DataSet$NewTime <- as...