Re: [R] ROC curve in R

2010-07-01 Thread Frank E Harrell Jr

On 07/01/2010 01:33 PM, Changbin Du wrote:

Read the ROCR package, it is very good.


Just be sure you really need an ROC curve.  More often than not it gets 
in the way of understanding.


Frank







On Thu, Jul 1, 2010 at 9:50 AM, ashu6886  wrote:



Hi,

i have a fairly large amount of genomic data. I have created a dataframe
which has "Reference" as one column and "Variation" as another. I want to
plot a ROC curve based on these 2 columns. I have serached the R manual but
I could not understand. Can anybody help me with the R code for plotting
ROC
curve.

Thnx
ashu6886
--
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--
Frank E Harrell Jr   Professor and ChairmanSchool of Medicine
 Department of Biostatistics   Vanderbilt University

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Re: [R] ROC curve in R

2010-07-01 Thread Changbin Du
Read the ROCR package, it is very good.





On Thu, Jul 1, 2010 at 9:50 AM, ashu6886  wrote:

>
> Hi,
>
> i have a fairly large amount of genomic data. I have created a dataframe
> which has "Reference" as one column and "Variation" as another. I want to
> plot a ROC curve based on these 2 columns. I have serached the R manual but
> I could not understand. Can anybody help me with the R code for plotting
> ROC
> curve.
>
> Thnx
> ashu6886
> --
> View this message in context:
> http://r.789695.n4.nabble.com/ROC-curve-in-R-tp2275431p2275431.html
> Sent from the R help mailing list archive at Nabble.com.
>
> __
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Sincerely,
Changbin
--

Changbin Du
DOE Joint Genome Institute
Bldg 400 Rm 457
2800 Mitchell Dr
Walnut Creet, CA 94598
Phone: 925-927-2856

[[alternative HTML version deleted]]

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and provide commented, minimal, self-contained, reproducible code.


Re: [R] ROC curve in R

2010-07-01 Thread Tal Galili
Regarding search,

There is also the "sos" packege.

And yesterday someone wrote a nice R code to enable searching inside
the description of all packages:
http://www.r-bloggers.com/cran-search/


Cheers,
Tal




Contact
Details:---
Contact me: tal.gal...@gmail.com |  972-52-7275845
Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) |
www.r-statistics.com (English)
--




On Thu, Jul 1, 2010 at 8:09 PM, Bert Gunter  wrote:

> Did you try googling on "R ROC function" (or something similar) or using
> the
> RSiteSearch() function?
>
> ?RSiteSearch
>
> RSiteSearch("ROC",restr="func")
>
> Learn to use R's various search capabilities before posting, please!
>
> Bert Gunter
> Genentech Nonclinical Biostatistics
>
>
>
> -Original Message-
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
> On
> Behalf Of ashu6886
> Sent: Thursday, July 01, 2010 9:51 AM
> To: r-help@r-project.org
> Subject: [R] ROC curve in R
>
>
> Hi,
>
> i have a fairly large amount of genomic data. I have created a dataframe
> which has "Reference" as one column and "Variation" as another. I want to
> plot a ROC curve based on these 2 columns. I have serached the R manual but
> I could not understand. Can anybody help me with the R code for plotting
> ROC
> curve.
>
> Thnx
> ashu6886
> --
> View this message in context:
> http://r.789695.n4.nabble.com/ROC-curve-in-R-tp2275431p2275431.html
> Sent from the R help mailing list archive at Nabble.com.
>
> __
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
> __
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

[[alternative HTML version deleted]]

__
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and provide commented, minimal, self-contained, reproducible code.


Re: [R] ROC curve in R

2010-07-01 Thread Saeed Abu Nimeh
Try the ROCR package. http://rocr.bioinf.mpi-sb.mpg.de/ROCR.pdf
Saeed

On Thu, Jul 1, 2010 at 9:50 AM, ashu6886  wrote:
>
> Hi,
>
> i have a fairly large amount of genomic data. I have created a dataframe
> which has "Reference" as one column and "Variation" as another. I want to
> plot a ROC curve based on these 2 columns. I have serached the R manual but
> I could not understand. Can anybody help me with the R code for plotting ROC
> curve.
>
> Thnx
> ashu6886
> --
> View this message in context: 
> http://r.789695.n4.nabble.com/ROC-curve-in-R-tp2275431p2275431.html
> Sent from the R help mailing list archive at Nabble.com.
>
> __
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.


Re: [R] ROC curve in R

2010-07-01 Thread Bert Gunter
Did you try googling on "R ROC function" (or something similar) or using the
RSiteSearch() function?

?RSiteSearch

RSiteSearch("ROC",restr="func")

Learn to use R's various search capabilities before posting, please!

Bert Gunter
Genentech Nonclinical Biostatistics
 
 

-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of ashu6886
Sent: Thursday, July 01, 2010 9:51 AM
To: r-help@r-project.org
Subject: [R] ROC curve in R


Hi,

i have a fairly large amount of genomic data. I have created a dataframe
which has "Reference" as one column and "Variation" as another. I want to
plot a ROC curve based on these 2 columns. I have serached the R manual but
I could not understand. Can anybody help me with the R code for plotting ROC
curve. 

Thnx
ashu6886
-- 
View this message in context:
http://r.789695.n4.nabble.com/ROC-curve-in-R-tp2275431p2275431.html
Sent from the R help mailing list archive at Nabble.com.

__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.


Re: [R] ROC curve in R

2010-07-01 Thread David Winsemius


On Jul 1, 2010, at 12:50 PM, ashu6886 wrote:



Hi,

i have a fairly large amount of genomic data. I have created a  
dataframe
which has "Reference" as one column and "Variation" as another. I  
want to
plot a ROC curve based on these 2 columns. I have serached the R  
manual but
I could not understand. Can anybody help me with the R code for  
plotting ROC

curve.



Not sure what sort of "R manual" you consulted, but surely any basic  
introduction must have covered how to search. In the interest of  
moving you a bit faster perhaps:


?RSiteSearch

--

David Winsemius, MD
West Hartford, CT

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and provide commented, minimal, self-contained, reproducible code.