Displaying 7 results from an estimated 7 matches for "fhoss".
2012 Feb 27
2
export 3D array to .txt file
Hey,
I have an array with the dimensions 200x6x200 and I want to save it in a
textfile. I want to be able to reload the text file to get the same array
again: new.array<-load(mytextfile.txt) or something similar. I was not
able to figure out a way to do that with write.table without having to save
200 text files. Is there another way?
Thank you!
Frauke
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2012 Nov 07
1
Excel Regression Function
Dear Frauke, good afternoon,
Could you tell me which excel function didnt work for regression analysis
and what excel version where you using?
Best regards,
Paul
El 07/11/2012 11:55, "frauke" <fhoss@andrew.cmu.edu> escribió:
> Hi David, hi Rui,
>
> thanks for your quick replies. I have replicated David's R results and
> confirmed them with Minitab. Though I'm not sure what you are trying to
> tell
> me with the code you wrote, David. Do you mean, I should use a da...
2012 Mar 11
3
extracting data from unstructured (text?) file
Dear R community,
I have the following problem I hoped you could help me with.
My data is save in thousand of files with a weird extension containing for
numbers and a z. For example *.1405z. With list.files I managed to load this
data into R. It looks like this (the row numbers are not in the original
file):
35 :LATEST STAGE 3.60 FT AT 730 AM CST ON
0102
36
2012 Oct 03
3
predict.lm if regression vector is longer than predicton vector
Hi everybody,
recently a member of the community pointed me to the useful predict.lm()
comment. While I was toying with it, I stumbled across the following
problem.
I do the regression with data from five years. But I want to do a prediction
with predict.lm for only one year. Thus my dataframe for predict.lm(mod,
newdata=dataframe) is shorter than the orginial vector that I did the
regression
2012 Feb 07
1
alternating element in url
Hey everybody,
it would be really appreciate if you knew the solution to the following
problem.
I am trying to load data from the internet into R without having to save
them. However, I need to acess a different website for each dataset. So I
want to alternate an element in the URL. Eventually, I want to fill a 3
dimensional matrix/array where each slice is a two-dimensional matrix from
the
2012 Sep 19
4
correlating matrices
Hi,
thank you for taking the time and reading my question. My question is
twofold:
1. I have several matrices with variables and one matrix with water levels.
I want to predict the water level with the data in the other matrices.
Basically,
* mod<-lm(matrix1 ~ matrix2+matrix3)*
( What looks like a minus is meant to be the wiggly minus.)
Of course I could dissemble the matrices and paste
2012 Nov 07
3
HELP! Excel and R give me totally different regression results using the exact same data
Hallo,
I am totally confused why Excel and R give me totally different regression
results for the data below. If you know the solution, please enlighten me.
In Excel I used LINEST() and Data>Data Analysis>Regression and both
(fortunately) gave the same result.
The coefficients were:
/b0=1.16, b1=0.957, b2=0.024, R2=0.0027, adjusted R2=-0.017/
In R I used