CMplot is available on CRAN, so it can be installed with the following R code:
> install.packages("CMplot")
> library("CMplot")
# if you want to use the latest version on GitHub:
> source("https://raw.githubusercontent.com/YinLiLin/CMplot/master/R/CMplot.r")There are two example datasets attached in CMplot, users can export and view the details by following R code:
> data(pig60K) #calculated p-values by MLM
> data(cattle50K) #calculated SNP effects by rrblup
> head(pig60K)
SNP Chromosome Position trait1 trait2 trait3
1 ALGA0000009 1 52297 0.7738187 0.51194318 0.51194318
2 ALGA0000014 1 79763 0.7738187 0.51194318 0.51194318
3 ALGA0000021 1 209568 0.7583016 0.98405289 0.98405289
4 ALGA0000022 1 292758 0.7200305 0.48887140 0.48887140
5 ALGA0000046 1 747831 0.9736840 0.22096836 0.22096836
6 ALGA0000047 1 761957 0.9174565 0.05753712 0.05753712
> head(cattle50K)
SNP chr pos Somatic cell score Milk yield Fat percentage
1 SNP1 1 59082 0.000244361 0.000484255 0.001379210
2 SNP2 1 118164 0.000532272 0.000039800 0.000598951
3 SNP3 1 177246 0.001633058 0.000311645 0.000279427
4 SNP4 1 236328 0.001412865 0.000909370 0.001040161
5 SNP5 1 295410 0.000090700 0.002202973 0.000351394
6 SNP6 1 354493 0.000110681 0.000342628 0.000105792
As the example datasets, the first three columns are names, chromosome, position of SNPs respectively, the rest of columns are the pvalues of GWAS or effects of GS/GP for traits, the number of traits is unlimited. Note: if plotting SNP_Density, only the first three columns are needed.
Now CMplot could handle not only Genome-wide association study results, but also SNP effects, Fst, tajima's D and so on.
Total 50~ parameters are available in CMplot, typing ?CMplot can get the detail function of all parameters.
CMplot has been integrated into our developed GWAS package rMVP, please cite the following paper:
Yin, L. et al. rMVP: A Memory-efficient, Visualization-enhanced, and Parallel-accelerated tool for Genome-Wide Association Study, Genomics, Proteomics & Bioinformatics (2021), doi: 10.1016/j.gpb.2020.10.007.
> CMplot(pig60K,type="p",plot.type="d",bin.size=1e6,chr.den.col=c("darkgreen", "yellow", "red"),file="jpg",memo="",dpi=300,
main="illumilla_60K",file.output=TRUE,verbose=TRUE,width=9,height=6)
# users can personally set the windowsize and the min/max of legend by:
# bin.size=1e6
# bin.range=c(min, max)
# memo: add a character to the output file name
# chr.labels: change the chromosome names
# main: change the title of the plots, for manhattan plot, if there are more than one trait, main can be
# assigned as a character vector containing the desired title for each trait
# NOTE: to show the full length of each chromosome, users can manually add every chromosome with one SNP, whose
# position equals to the length of corresponding chromosome, then assign the parameter in CMplot: CMplot(..., "chr.pos.max=TRUE").
> CMplot(pig60K,type="p",plot.type="c",chr.labels=paste("Chr",c(1:18,"X","Y"),sep=""),r=0.4,cir.legend=TRUE,
outward=FALSE,cir.legend.col="black",cir.chr.h=1.3,chr.den.col="black",file="jpg",
memo="",dpi=300,file.output=TRUE,verbose=TRUE,width=10,height=10)
> CMplot(pig60K,type="p",plot.type="c",r=0.4,col=c("grey30","grey60"),chr.labels=paste("Chr",c(1:18,"X","Y"),sep=""),
threshold=c(1e-6,1e-4),cir.chr.h=1.5,amplify=TRUE,threshold.lty=c(1,2),threshold.col=c("red",
"blue"),signal.line=1,signal.col=c("red","green"),chr.den.col=c("darkgreen","yellow","red"),
bin.size=1e6,outward=FALSE,file="jpg",memo="",dpi=300,file.output=TRUE,verbose=TRUE,width=10,height=10)
#Note:
1. if signal.line=NULL, the lines that crosse circles won't be added.
2. if the length of parameter 'chr.den.col' is not equal to 1, SNP density that counts
the number of SNP within given size('bin.size') will be plotted around the circle.
> CMplot(cattle50K,type="p",plot.type="c",LOG10=FALSE,outward=TRUE,col=matrix(c("#4DAF4A",NA,NA,"dodgerblue4",
"deepskyblue",NA,"dodgerblue1", "olivedrab3", "darkgoldenrod1"), nrow=3, byrow=TRUE),
chr.labels=paste("Chr",c(1:29),sep=""),threshold=NULL,r=1.2,cir.chr.h=1.5,cir.legend.cex=0.5,
cir.band=1,file="jpg", memo="",dpi=300,chr.den.col="black",file.output=TRUE,verbose=TRUE,
width=10,height=10)
#Note: parameter 'col' can be either vector or matrix, if a matrix, each trait can be plotted in different colors.
> CMplot(pig60K,type="p",plot.type="m",LOG10=TRUE,threshold=NULL,file="jpg",memo="",dpi=300,
file.output=TRUE,verbose=TRUE,width=14,height=6,chr.labels.angle=45)
# 'chr.labels.angle': adjust the angle of labels of x-axis (-90 < chr.labels.angle < 90).
> CMplot(pig60K, plot.type="m", col=c("grey30","grey60"), LOG10=TRUE, ylim=c(2,12), threshold=c(1e-6,1e-4),
threshold.lty=c(1,2), threshold.lwd=c(1,1), threshold.col=c("black","grey"), amplify=TRUE,
chr.den.col=NULL, signal.col=c("red","green"), signal.cex=c(1.5,1.5),signal.pch=c(19,19),
file="jpg",memo="",dpi=300,file.output=TRUE,verbose=TRUE,width=14,height=6)
#Note: if the ylim is setted, then CMplot will only plot the points among this interval,
# ylim can be vector or list, if it is a list, different traits can be assigned with
# different range at y-axis.
# 'threshold' can be set for different traits, for example: threshold=list(c(1e-6,1e-4), NULL, 1e-5),
# each list contains a vector of thresholds for each trait, NULL means no threshold for corresponding trait.
> CMplot(pig60K, plot.type="m", LOG10=TRUE, ylim=NULL, threshold=c(1e-6,1e-4),threshold.lty=c(1,2),
threshold.lwd=c(1,1), threshold.col=c("black","grey"), amplify=TRUE,bin.size=1e6,
chr.den.col=c("darkgreen", "yellow", "red"),signal.col=c("red","green"),signal.cex=c(1.5,1.5),
signal.pch=c(19,19),file="jpg",memo="",dpi=300,file.output=TRUE,verbose=TRUE,
width=14,height=6)
#Note: if the length of parameter 'chr.den.col' is bigger than 1, SNP density that counts
the number of SNP within given size('bin.size') will be plotted.
> signal <- pig60K$Position[which.min(pig60K$trait2)]
> SNPs <- pig60K$SNP[pig60K$Chromosome==13 &
pig60K$Position<(signal+1000000)&pig60K$Position>(signal-1000000)]
> CMplot(pig60K, plot.type="m",LOG10=TRUE,col=c("grey30","grey60"),highlight=SNPs,
highlight.col="green",highlight.cex=1,highlight.pch=19,file="jpg",memo="",
chr.border=TRUE,dpi=300,file.output=TRUE,verbose=TRUE,width=14,height=6)
# Note:
# 'highlight' could be vector or list, if it is a vector, all traits will use the same highlighted SNPs index,
# if it is a list, the length of the list should equal to the number of traits.
# highlight.col, highlight.cex, highlight.pch can be value or vector, if its length equals to the length of highlighted SNPs,
# each SNPs have its special colour, size and shape.
> SNPs <- pig60K[pig60K$trait2 < 1e-4, 1]
> CMplot(pig60K,type="h",plot.type="m",LOG10=TRUE,highlight=SNPs,highlight.type="p",
highlight.col=NULL,highlight.cex=1.2,highlight.pch=19,file="jpg",memo="",
dpi=300,file.output=TRUE,verbose=TRUE,width=14,height=6,band=0.6)
> SNPs <- pig60K[pig60K$trait2 < 1e-4, 1]
> CMplot(pig60K,type="p",plot.type="m",LOG10=TRUE,highlight=SNPs,highlight.type="h",
col=c("grey30","grey60"),highlight.col="darkgreen",highlight.cex=1.2,highlight.pch=19,
file="jpg",dpi=300,file.output=TRUE,verbose=TRUE,width=14,height=6)
> CMplot(pig60K[pig60K$Chromosome==13, ], plot.type="m",LOG10=TRUE,col=c("grey60"),highlight=SNPs,
highlight.col="green",highlight.cex=1,highlight.pch=19,file="jpg",memo="",
threshold=c(1e-6,1e-4),threshold.lty=c(1,2),threshold.lwd=c(1,2), width=9,height=6,
threshold.col=c("red","blue"),amplify=FALSE,dpi=300,file.output=TRUE,verbose=TRUE)
> SNPs <- pig60K[pig60K[,5] < (0.05 / nrow(pig60K)), 1]
> genes <- paste("GENE", 1:length(SNPs), sep="_")
> set.seed(666666)
> CMplot(pig60K[,c(1:3,5)], plot.type="m",LOG10=TRUE,col=c("grey30","grey60"),highlight=SNPs,
highlight.col=c("red","blue","green"),highlight.cex=1,highlight.pch=c(15:17), highlight.text=genes,
highlight.text.col=c("red","blue","green"),threshold=0.05/nrow(pig60K),threshold.lty=2,
amplify=FALSE,file="jpg",memo="",dpi=300,file.output=TRUE,verbose=TRUE,width=14,height=6)
# Note:
# 'highlight', 'highlight.text', 'highlight.text.xadj', 'highlight.text.yadj' could be vector or list, if it is a vector,
# all traits will use the same highlighted SNPs index and text, if it is a list, the length of the list should equal to the number of traits.
# the order of 'highlight.text' must be consistent with 'highlight'
# highlight.text.cex: value or vecter, control the size of added text
# highlight.text.font: value or vecter, control the font of added text
# highlight.text.xadj: value or vecter or list for multiple traits, -1, 0, 1 limited, control the position of text around the highlighted SNPs: -1(left), 0(center), 1(right)
# highlight.text.yadj: value or vector or list for multiple traits, same as above, -1(down), 0(center), 1(up)
> CMplot(cattle50K, plot.type="m", band=0.5, LOG10=FALSE, ylab="SNP effect",threshold=0.015,
threshold.lty=2, threshold.lwd=1, threshold.col="red", amplify=TRUE, width=14,height=6,
signal.col=NULL, chr.den.col=NULL, file="jpg",memo="",dpi=300,file.output=TRUE,
verbose=TRUE,cex=0.8)
#Note: if signal.col=NULL, the significant SNPs will be plotted with original colors.
> cattle50K[,4:ncol(cattle50K)] <- apply(cattle50K[,4:ncol(cattle50K)], 2,
function(x) x*sample(c(1,-1), length(x), rep=TRUE))
> CMplot(cattle50K, type="h",plot.type="m", band=0.5, LOG10=FALSE, ylab="SNP effect",ylim=c(-0.02,0.02),
threshold.lty=2, threshold.lwd=1, threshold.col="red", amplify=FALSE,cex=0.6,
chr.den.col=NULL, file="jpg",memo="",dpi=300,file.output=TRUE,verbose=TRUE)
#Note: Positive and negative values are acceptable.
SNPs <- list(
pig60K$SNP[pig60K$trait1<1e-6],
pig60K$SNP[pig60K$trait2<1e-6],
pig60K$SNP[pig60K$trait3<1e-6]
)
CMplot(pig60K, plot.type="m",multracks=TRUE,threshold=c(1e-6,1e-4),threshold.lty=c(1,2),
threshold.lwd=c(1,1), threshold.col=c("black","grey"), amplify=TRUE,bin.size=1e6,
chr.den.col=c("darkgreen", "yellow", "red"), signal.col=c("red","green","blue"),
signal.cex=1, file="jpg",memo="",dpi=300,file.output=TRUE,verbose=TRUE,
highlight=SNPs, highlight.text=SNPs, highlight.text.cex=1.4)
#Note: if you are not supposed to change the color of signal,
# please set signal.col=NULL and highlight.col=NULL.
> CMplot(pig60K,plot.type="q",box=FALSE,file="jpg",memo="",dpi=300,
conf.int=TRUE,conf.int.col=NULL,threshold.col="red",threshold.lty=2,
file.output=TRUE,verbose=TRUE,width=5,height=5)
> pig60K$trait1[sample(1:nrow(pig60K), round(nrow(pig60K)*0.80))] <- NA
> pig60K$trait2[sample(1:nrow(pig60K), round(nrow(pig60K)*0.25))] <- NA
> CMplot(pig60K,plot.type="q",col=c("dodgerblue1", "olivedrab3", "darkgoldenrod1"),threshold=1e-6,
ylab.pos=2,signal.pch=c(19,6,4),signal.cex=1.2,signal.col="red",conf.int=TRUE,box=FALSE,multracks=
TRUE,cex.axis=2,file="jpg",memo="",dpi=300,file.output=TRUE,verbose=TRUE,ylim=c(0,8),width=5,height=5)
Questions, suggestions, and bug reports are welcome and appreciated.
- Author: Lilin Yin
- Contact: ylilin@163.com
- QQ group: 166305848
- Institution: Huazhong agricultural university