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how to show percentage of individuals for two groups on histogram?

1 message · Jim Lemon

#
Hi Ana,
I think this is what you want in the panel style of plot. Let me know
if not, or if I have calculated the wrong percentages. The overlaid
histograms definitely use a different calculation.

amsdf<-read.table("pheno_m1_plot",header=TRUE,stringsAsFactors=FALSE)
dim(amsdf)
# find the right breaks for your "cut"
casen<-table(cut(amsdf$HBA1C[amsdf$pheno==2],breaks=3:14))
controln<-table(cut(amsdf$HBA1C[amsdf$pheno==1],breaks=3:14))
# save yourself some typing
HBA1C2<-amsdf$HBA1C[amsdf$pheno==2]
HBA1C1<-amsdf$HBA1C[amsdf$pheno==1]
ncases<-length(HBA1C2)
ncontrols<-length(HBA1C1)
split.screen(matrix(c(0,1,0.6,1,0,1,0,0.6),nrow=2,byrow=TRUE))
par(mar=c(0,4,1,2))
barpos=barplot(100*casen/ncases,names.arg=NA,col="orange",
 space=0,ylab="Percentage",xaxt="n",ylim=c(0,27))
case_text<-sprintf(
 "Cases: n=%d, nulls=%d, median=%.1f, mean=%.1f, sd=%.1f",
 length(HBA1C2),sum(is.na(HBA1C2)),round(median(HBA1C2,na.rm=TRUE),1),
 round(mean(HBA1C2,na.rm=TRUE),1),round(sd(HBA1C2,na.rm=TRUE),1))
text(mean(barpos),25,case_text)
box()
screen(2)
par(mar=c(4,4,0,2))
barplot(100*controln/ncontrols,names.arg=NA,
 space=0,ylab="Percentage",col="orange",ylim=c(0,34))
control_text<-sprintf(
 "Cases: n=%d, nulls=%d, median=%.1f, mean=%.1f, sd=%.1f",
 length(HBA1C1),sum(is.na(HBA1C1)),round(median(HBA1C1,na.rm=TRUE),1),
 round(mean(HBA1C1,na.rm=TRUE),1),round(sd(HBA1C1,na.rm=TRUE),1))
text(mean(barpos),32,control_text)
box()
library(plotrix)
staxlab(1,at=barpos,labels=names(casen))

Jim
On Sat, May 23, 2020 at 9:01 AM Ana Marija <sokovic.anamarija at gmail.com> wrote:
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