Displaying 8 results from an estimated 8 matches for "copex".
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2004 Mar 03
3
plot(x,y) with errors
Dear all,
I have 2 variables,
x<-c(1,2,3,4,5,6,7,8,9,10)
y<-c(1.3,2.5,4.6,5.3,5.9,6.7,7.4,8.5,9.4,10.4)
each point of the y variable has an error:
erry<-(0.2,0.3,0.2,0.1,0.4,0.2,0.3,0.4,0.3,0.2)
how to plot(x,y) with the errors segments?
Thank you,
Copex
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2004 Feb 21
3
saving variables created by functions in the workspace
...otsinx()
and the plot works properly.
but then in the workspace if I want to look at the
values of sinx the following error is displayed:
Error: Object "sinx" not found.
How to save the variables created by the function on
the workspace?
Thank you very much, it seems to be very trivial...
Copex.
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2004 Mar 08
2
getting the std errors in the lm function
...16 ***
x[1:19] -2.32337 0.04251 -54.66 <2e-16 ***
******************************************************
now I can access easily with
mylm$coefficients[[1]]
mylm$coefficients[[2]]
at the Estimate 16.54087 and -2.32337.
how can I access at the Std. Error 0.19952 and 0.04251 ?
Thank you,
Copex
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2004 Feb 23
2
deleting elements from an array/object
...ontains some "0", and I want to calculate the linear fit among myHist$mids and log(myHist$counts), I want remove the elements of both arrays where these "0" occurs.
which are the possible solutions to this problem?
(I'd like to avoid getting the indexes...)
Thanks a lot,
copex
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2004 Feb 28
1
Basic general statistical problem.
...t a good analysys of the problem?
Any answers to my questions or a better standard procedure (or package) where this work can be done easily, for the basic kind of distribution types?
Any kind of answer should be appreciated, including documentations or tutorial.
Thank you for reading till here!
Dr Copex
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2004 Feb 15
1
linear regression of data with standard deviation
Hello everyone,
I know that to calculate the linear regression between x and y I
have to use the function "lm".
But how to do if x and y have a standard deviation like in the
following example?
How to compute the chi square test in this case?
Thank you,
Fulvio.
example:
x +- dx
5 2
13 4
17 4
23 6
y +- dy
6.3 0.6
9.2 0.9
14 1
21 4
2004 Sep 28
1
call R scripts from python
Hello,
I have just learnt some python, and would like to call R scripts from python, without using batch mode.
I learnt how to do it from perl, in fact reading in the mail archive I found the following good example:
***************************************
#!/usr/local/bin/perl
open (FILE, ">test.txt");
print FILE "a,b,c,d,e\n1,2,3,4,5";
close FILE;
####### Start R
2004 Mar 09
0
Re: R-help Digest, Vol 13, Issue 8
...l NA removal out of Time Series with na.omit.ts()
> (Prof Brian Ripley)
> 27. Re: Internal NA removal out of Time Series with na.omit.ts()
> (Adrian Trapletti)
> 28. lm - significance disappears (Stuart Leask)
> 29. getting the std errors in the lm function (Fulvio Copex)
> 30. dsn (Margarida J?lia Rodrigues Igreja)
> 31. Re: lm - significance disappears (Prof Brian Ripley)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 07 Mar 2004 13:21:56 +0100
> From: pallier <pallier...