Bert,
I am sorry for having troubled you. The double post was a mistake
because gmail sent the first e-mail in html and it went into
moderation queue. The second one was sent in plain text. I did not
know the moderator approved my first post.
1. As I said, I am a beginner in statistics and
On 14 Apr 2014, at 15:33 , Bert Gunter wrote:
> Well, this is your second post on the same topic, your first having
> received no response. So you should suspect something is amiss and
> reconsider before continuing, don't you think?
>
> 1. I, for one, was not able to make any sense of your que
Well, this is your second post on the same topic, your first having
received no response. So you should suspect something is amiss and
reconsider before continuing, don't you think?
1. I, for one, was not able to make any sense of your query. You do
not appear to understand regression, so I would
I am quite new to R and I am having trouble figuring out how to select
variables in a multivariate linear regression in R. My google-fu also
did not find anything.
Pretend I have the following formulas:
P = aX + bY
Q = cZ + bY
I have a data frame with column P, Q, X, Y, Z and I need to find a, b
I am quite new to R and I am having trouble figuring out how to select
variables in a multivariate linear regression in R. My google-foo also did
not find anything.
Pretend I have the following formulas:
P = aX + bY
Q = cZ + bY
I have a data frame with column P, Q, X, Y, Z and I need to find a,
Hi, I know that the following question is a basic one,sorry in
advance. My problem is that I have a data sheet with 80 variables
which are unemployment rates of 80 countries. I call it as u1 to u80.
Besides I have for the same countries their productivity rates. I want
to do a kind of loop to selec
Magnus zulutime.net> writes:
>
> I have a simulation program that generates a data frame for each run. I
> aggregate the data.frames into a list (df.list). The structure of all data
> frames is the same, only the values are different.
>
> I then want to aggregate the various runs. Currently
I have a simulation program that generates a data frame for each run. I
aggregate the data.frames into a list (df.list). The structure of all data
frames is the same, only the values are different.
I then want to aggregate the various runs. Currently I use the following
method (for three runs
I think that you have to be a little more explicit with a description
of your data. I am not clear as to what this means:
> There are lots of variables between each exposure and the values are nominal
> with upto 6 values..
Can you provide a more complete description. How many columns of
exposu
Thanks for the help guys,
i think i needed to be a bit more explicit however (sorry)
There are lots of variables between each exposure and the values are nominal
with upto 6 values..
And to add to the problem the datasets i deal with range from anything upto
5G.
My guess is that the melt functio
I am not sure where the "Max" comes from, but this might be a start for you:
> x <- read.table(textConnection("ID Exposure_1 Exposure_2 Exposure_3
+ 1y yy
+ 2y y-
+ 3y - -"), hea
Try this:
data.frame(ID = x$ID,
Max_Exposure = max(rowSums(x[,-1] == "y")),
Unique_Exposure = rowSums(x[,-1] == "y"))
On Tue, Aug 5, 2008 at 10:21 AM, Michael Pearmain <[EMAIL PROTECTED]> wrote:
> Hi All,
>
> i have a dataset that i want to dynamically inspec
Hi All,
i have a dataset that i want to dynamically inspect for the number of
variables that start with "Exposure_" and then for these count the entries
across each case i.e
ID Exposure_1 Exposure_2 Exposure_3
1y yy
2y y
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