Displaying 7 results from an estimated 7 matches for "mynewdata".
2012 Jan 22
1
how to load R data file into a structure?
...all,
I have already some important variables in the current R session;
and I wanted to load some rData file which was saved during the last R
session using "save.image"...
But how do I avoid the newly loaded data/variables messing with my existing
data/variables?
In Matlab, I can do:
mynewdata=load("imagefromlastRsession.rData")
and then I can access the variables therein as follows:
mynewdata.variable1
mynewdata.variable2
mynewdata.variable3
...
...
...
As you can see, this way, these variables won't interfere with my existing
variables in the current R session...
Ho...
2011 Feb 12
2
Predictions with missing inputs
...Here's my attempt
but, of course, didn't work.
#fit some linear model to random data
x=matrix(rnorm(100*3),100,3)
y=sample(1:2,100,replace=TRUE)
mydata <- data.frame(y,x)
mymodel <- lm(y ~ ns(X1, df=3) + X2 + X3, data=mydata)
summary(mymodel)
#create new data with 1 missing input
mynewdata <- data.frame(matrix(rnorm(100*2),100,2))
mypred <- predict(mymodel, mynewdata)
Thanks in advance for your help!
Axel.
[[alternative HTML version deleted]]
2009 Apr 26
2
RWeka prediction
Dear All,I encountered a problem when I use RWeka for prediction.
Specifically, I use the following:
res=J48(X1~.,data=mydata);
predict(res), #it worked fine
but when I tried to use a different data set,
i.e. predict(res,newdata=mynewdata);
all the predictions I get is 0, which apparently is problematic.
What is weird is, if I use the old data, but use the newdata option,
i.e.
predict(res,newdata=mydata), all prediction is 0;
Can anyone hint me what is wrong?
Thanks a lot.
Regards,
Dajiang
[[alternative HTML version deleted]]
2011 Aug 18
1
Loop trouble with Excel Serial Numbers!
Hi All!
I'm trying to convert serial numbers in Excel to dates in R. For each
single "thedate" entry, I get a correct answer. But if I try using the for
loop, I get bizarre numbers in "mynewdata".
thedate<-as.matrix(40548:40759,ncol=1)
exdate<-function(){
mynewdate<-NULL
for(i in 1:nrow(thedate)){
mynewdate[i]<-as.Date(thedate[i,1],origin="1899-12-30")
}
print(mynewdate)
}
exdate()
Thank you very much!
Anna
[[alternative HTML version deleted]]
2010 Mar 11
1
Group by
...chosed time
bars.
i.e. So I would like to group by hour or day or 5 days, and have all my
columns be summed or averaged or counted..
mydata:
V1,V2,V3
10:03:13,3.4,1002
10:03:14,5.6,1001
10:05:27,7.2,999
10:05:33,8.2,998
I want to convert this into say 5 minutes "bars" and sum columns
mynewdata:
V1,V2,V3
10:00:00,9.0,2003
10:05:00,15.4,1997
How can I do this?
--
View this message in context: http://n4.nabble.com/Group-by-tp1588694p1588694.html
Sent from the R help mailing list archive at Nabble.com.
2009 May 06
1
Add trend line to XYPlot using a subset of the original data
I've created an xyplot that I want to add a trend line to using a subset of
the data.
The xyplot is
xyplot(X9444500~WY,data=mynewdata,xlim=c(1900,2020),ylab="TEST",
xlab="",ylim=c(100,100000),scales=list(x=list(at=c(1900,1920,1940,1960,1980,2000,2020),axs="r",tck=-1),y=list(log=TRUE,tck=-100,at=c(100,1000,10000,100000))),
panel=function(x,y,...) {
panel.xyplot(x,y,col=1)
panel.lines(x,exp(pr...
2007 Sep 17
1
How can I write routines and scripts in the R environment ?
*I would like to plot some semi-periodic signals as a function of the phase
expressed as a value in [0,2PI]*
*The problem is that the phase data is reported as the residual of the
division by 2PI.*
*For instance if the phase is 10.359 rd then:*
*15.359 / 6.283185 = 2*6.283185 + 2.79263*
*then only the residual 2.79263 is stored. *
*In order to plot a number of consecutive cycles I have to add