Displaying 7 results from an estimated 7 matches for "selcted".
Did you mean:
selected
2012 Nov 22
0
selcting a random sample and saving it in a seprate dataframe and also remaining part in other data frame
HI Madhu,
I guess you got your solution from Rui:
?dat1<-data.frame(x=c(1,1,2,2,2,3,4,4,4),y=c(23,45,87,46,78,12,87,79,76))
s<-sample(unique(dat1[,1]),length(unique(dat1[,1]))*0.8)
?s
#[1] 3 4 2
You can have a list containing both the dataframes
list1<-list(dat1[dat1$x%in%s,],dat1[!dat1$x%in%s,])
list1
[[1]]
#? x? y
#3 2 87
#4 2 46
#5 2 78
#6 3 12
#7 4 87
#8 4 79
#9 4 76
#[[2]]
?# x? y
2007 Mar 02
2
sampling random groups with all observations in the group
Hi
I have a panel dataset with large number of groups and differing number
of observations for each group. I want to randomly select say, 20% of
the groups or 200 groups, but along with all observations from the
selcted groups (with the corresponding data).
I guess it is possible to generate a random sample from the groups ids
and then match that with the entire dataset to have the intended
dataset, but it sounds cumbersome and possibly there is an easier way to
do this? checked the package 'sampling' or...
2011 Oct 04
1
Matching two datasets and updating values
Dear R forum
I have two datafarmes with category and cat_val forming one dataframe and cust and cust_category forming another dataframe.
category = c("C", "D", "B", "A")
cat_val = c(0.10, 0.25, 0.40, 0.54)
cust = c("cust_1", "cust_2", "cust_3", "cust_4", "cust_5", "cust_6", "cust_7",
2012 Mar 29
2
subtract a list of vectors from a list of data.frames in an elegant way
Dear R experts,
I've realized that it might not be possible to define a negative SELCET statement in a SQL call so now I'm looking for the smoothest way to generate a list of what I would like from my large database by first pulling all the names with a query like this "SELECT top 1 * FROM your_table" (thank you Bart Joosen for the idea) and then subtract the variables I am not
2006 Apr 22
3
Creating a select dropdown box with links to methods
What would be the best way to create a form select dropdown box and upon
"submit" have it directly go to a controller method view?
I have something that somewhat works, but I think there is probably a
much easier way to do it. As of now, I have the dropdown list which
when the form is submitted is handed to a controller method which
basically
I have my dropdown box:
<%=
2007 Jun 01
2
lguest problem on boot of guest kernel
Hi !
Kenrel 2.6.21 (kernel.org)
Patch lguest-2.6.21-254.patch
Distro Slackware 11.0
GCC 3.4.6
GLIBC 2.3.6
HW model name : AMD Duron(tm) procu{s{
Module Size Used by
tun 7680 0
lg 54600 0
just started playing with lguest - patching, compiling and booting the
host-kernel goes ok - compiling lguest is ok as well after
2007 Jun 01
2
lguest problem on boot of guest kernel
Hi !
Kenrel 2.6.21 (kernel.org)
Patch lguest-2.6.21-254.patch
Distro Slackware 11.0
GCC 3.4.6
GLIBC 2.3.6
HW model name : AMD Duron(tm) procu{s{
Module Size Used by
tun 7680 0
lg 54600 0
just started playing with lguest - patching, compiling and booting the
host-kernel goes ok - compiling lguest is ok as well after