patchwork.CG.copynumbers: Function plot allele-specific copy numbers of the genome

In patchworkCG: Allele-specific Copy Number Analysis of CompleteGenomics Whole Genome data

Description

Input data for this function should be assessed from any of the CG_KaCh() plots.

See argument details.

Very important: For this function to work you must have the file CG.Rdata, generated using patchwork.CG.plot(), in your working directory!

Usage

patchwork.CG.copynumbers(cn2,delta,het,hom,maxCn=8,ceiling=1,name="copynumbers_",
				CGfile=NULL,forcedelta=F)

Arguments

cn2	The approximate position of copy number 2, diploid, on total intensity axis.
delta	The difference in total intensity between consecutive copy numbers. For example 1 and 2 or 2 and 3. If copy number 2 has total intensity ~0.6 and copy number 3 har total intensity ~0.8 then delta would be 0.2.
het	Allelic imbalance ratio of heterozygous copy number 2.

hom	Allelic imbalance ratio of Loss-of-Heterozygosity copy number 2.
maxCn	Highest copy number to calculate for. Default is 8.
ceiling	Default is 1.
name	Default is "copynumbers_". The name you want attached to generated plots.
CGfile	Default is NULL. If your CG.Rdata file is not in your working directory, and you dont wish to move it to your working directory, you can simply input the path here as CGfile = "path/to/file/CG.Rdata" so patchwork.CG.copynumbers() can find its data.
forcedelta	Default is FALSE. If TRUE the delta value will be absolute and not subject to adjustments.

Details

1. Run the patchwork.CG.plot correctly. This will generate CG.Rdata.
2. View your plots and decide the correct parameters for the other arguments of this function.
3. Make sure CG.Rdata is in your working directory, or set the CGfile parameter to point to CG.Rdata.
4. Run the function.

Upon completion two files will be generated, copynumbers.Rdata which contains the objects used to generate the plots and Copynumbers.csv. Other than this plots from CG_Ka_check and CG_KaChCN will be generated.

Author(s)

Markus Mayrhofer, [email protected]
Sebastian DiLorenzo, [email protected]

See Also

patchwork.CG.plot
subfunctions_copynumbers
CG_Ka_check
CG_KaChCN

Examples

## Not run: 
>library(patchworkCG)

#With CG.Rdata in working directory. Values for parameters estimated from
#HCC2218 chromosome 1. 
#See plot patchworkCG/example_plots/HCC2218_KaCh_chr1.png
>patchwork.CG.copynumbers(cn2=0.85,delta=0.35,het=0.25,hom=0.95,name="HCC2218_")

#Pointing to location of CG.Rdata file
>patchwork.CG.copynumbers(cn2=0.85,delta=0.35,het=0.25,hom=0.95,name="HCC2218_",
				CGfile="path/to/CG.Rdata")

#Load the objects generated from patchwork.CG.copynumbers
#For comparison purposes only
>load("copynumbers.Rdata")

> head(ai)
$cn2m1
[1] 0.2460513

$cn2m0
[1] 0.95

$cn1m0
[1] 0.9690196

$cn0m0
[1] NA

$cn3m1
[1] 0.2677295

$cn3m0
[1] 0.9671712

> head(int)
$cn2
[1] 0.85

$cn1
[1] 0.5

$cn0
[1] 0.15

$cn3
[1] 1.2

$cn4
[1] 1.55

$cn5
[1] 1.9

> head(regions)
   chr  start    end avgnormcov relcov     ratio snvs        ai np Cn mCn
1 chr1  10000 177417       79.0   1.05 0.9660335   24 0.5531915 17  2   1
2 chr1 227417 267719       79.0   1.05 0.9660335    2 0.3243243  4  2   1
3 chr1 317719 471368       79.0   1.05 0.9660335    2 0.7826087 15  2   0
4 chr1 521368 600000      170.8   2.26 2.0792721    2 0.1944444  8  6   3
5 chr1 600000 700000       74.6   0.99 0.9108316    2 0.5333333 10  2   1
6 chr1 700000 900000       51.9   0.69 0.6348220  109 0.4960325 20  1   0
  fullCN
1  cn2m1
2  cn2m1
3  cn2m0
4  cn6m3
5  cn2m1
6  cn1m0

## End(Not run)

patchworkCG documentation built on May 31, 2017, 4:56 a.m.