search for: carcinogenesis

Displaying 20 results from an estimated 27 matches for "carcinogenesis".

Collapse data matrix with extra info separated by commas
2009 Apr 06
2
Collapse data matrix with extra info separated by commas
...3 A 2 3,4 5 B 1 5,6,7 This seems to be the sort of the thing that the reshape library should be able to do, but I just can't work out how to do it. Many thanks Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
COnfidence intervals for estimates of linear model
2009 Dec 23
2
COnfidence intervals for estimates of linear model
...e + 1.95996*Std.Error to Estimate - 1.95996*Std.Error or is there another approach that doesn't assume a normal distrbution? Thanks. Apologies for my naiivity Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
Variable Importance - Random Forest
2007 Aug 24
2
Variable Importance - Random Forest
...te importance score? Now, when having the option "importance = F" in the randomForest call, the 'importance' element is now a vector. What values are those? Thank you in advance for any input you may have. Best, Ewy Ewy Mathe, Ph. D. Laboratory of Human Carcinogenesis National Cancer Institute, NIH 37 Convent Drive Building 37, Room 3068 Bethesda, MD 20892-4255 Tel: 301-496-5835 Fax: 301-496-0497 [[alternative HTML version deleted]]
Extract html tables to data.frames
2009 Dec 02
1
Extract html tables to data.frames
...o a data.frame so I can perform further analysis. Could anyone tell me the best way to do this? Would it be more appropriate to use an external tool first? Thanks Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
Mathematical label in a plot with a percent sign
2009 Apr 28
1
Mathematical label in a plot with a percent sign
...well doesn't seem to work. xlab=bquote(x>=5.("%")) almost works but includes brackets. Anyonw know how to solve this one Dan PS I am running R 2.9.0 -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
expand comma separated field vertically in data.frame
2010 Nov 19
1
expand comma separated field vertically in data.frame
...nsform it to this: a 1 b1 a 2 b1 a 3 b1 a 4 b1 b 6 b3 b 7 b3 I have been looking at ddply but can't seem to work it out. ANy help would be gratefully received. Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
order by decerasing 1st variable and increasing 2nd variable
2009 Jun 24
1
order by decerasing 1st variable and increasing 2nd variable
...can not find anything in order that seems to support this. I would have thought, x[order(x$One,x$Two,decreasing=c(T,F)),] would do it but it doesn't. Thanks Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
Adding name labels to x-axis of matplot
2008 Mar 26
1
Adding name labels to x-axis of matplot
...at, as.graphicsAnnot(labels), tick, line, pos, outer, : 'labels' is supplied and not 'at' Any ideas? Is there are a more appropriate plot type? -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
melt causes errors when characters and values are used
2010 Dec 10
1
melt causes errors when characters and values are used
...alue_1 Date_2 Value_2 ... and I would like to convert it to a data.frame of ID, Date & Value but I thought the above would be an appropriate middle step. Thanks Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
Suitable test for ordinal variable vs continuous variable trend
2010 Dec 02
1
Suitable test for ordinal variable vs continuous variable trend
...propriate. I don't have any experience dealing with ordinal variables so I am at a bit of a loss. What is the most appropriate test? and is it implemented in R? Many thanks ************************************************************** Daniel Brewer Institute of Cancer Research Molecular Carcinogenesis MUCRC 15 Cotswold Road Sutton, Surrey SM2 5NG United Kingdom Tel: +44 (0) 20 8722 4109 Fax: +44 (0) 20 8722 4141 Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limit...
Capturing coxph warnings and errors
2008 Jun 17
3
Capturing coxph warnings and errors
...Deal with it so that it the scripts result data.frame the p value etc are set to NA. 2) Suppress the Error and Warning messages What is the best way to do this? Thanks -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
Stacked barplot with two stacked bars besides each other
2009 Jan 20
2
Stacked barplot with two stacked bars besides each other
...I was thinking something like: > barplot(list(as.matrix(var1),as.matrix(var2))) would work, but it didn't. Any suggestions you could make would be great. Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
Fitting a linear model with a break point
2009 Sep 08
2
Fitting a linear model with a break point
...sure how to implement this in R. Anyone got any ideas? Also is there a way of including the threshold in the actual model, so that could be estimated too? Thanks Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
pwr.2p2n.test when the ratio of n1/n2 is known
2008 Oct 24
1
pwr.2p2n.test when the ratio of n1/n2 is known
...null whereas I would like both n1 and n2 to be determined where I know there relative proportions. Any ideas how to do this? Is there a different function? Thanks Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
cpower and censoring
2008 May 08
1
cpower and censoring
...would get the power for a set control/non-control clinical trial where censoring occurs at an estimated rate with an estimated drop out rate. Quite confused about this. -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
Memory issue?
2009 Jan 27
2
Memory issue?
...don't know what else it could be as it doesn't always occur even if the script is run with exactly the same data. Does rm() actually free up memory? Thanks Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
Use SOCKS proxy
2009 Jan 29
0
Use SOCKS proxy
...issues with the Institute's new web filtering system and want to be able to test whether a problem I have with the biomaRt package is caused by it. Many thanks Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
Does R support [:punct:] in regexps?
2009 Apr 09
1
Does R support [:punct:] in regexps?
...ings. > x <- c("yoda-yoda","billy!") > gsub("/[:punct:]/","",x) [1] "yoda-yoda" "billy!" Thanks Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
Bulk editing of mySQL tables
2010 Mar 24
1
Bulk editing of mySQL tables
...and it isn't a very effective way to do it. An example of the sort of thing I am doing is to try and update a column based on a CSV file stored locally. Thanks Dan -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...
Ancova: formula with a common intercept
2008 Jun 02
1
Ancova: formula with a common intercept
...0.916 p53plus 0.22977 0.55646 0.413 0.682 Time:p53plus 0.11887 0.02524 4.709 4.62e-05 *** But I do not think that is doing what I want. Many thanks -- ************************************************************** Daniel Brewer, Ph.D. Institute of Cancer Research Molecular Carcinogenesis Email: daniel.brewer at icr.ac.uk ************************************************************** The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, L...