Basic Graphs in R

 

1. Histogram

x<-rnorm(50)
hist(x) # plot the histogram of those values.

2. Modification Histogram

hist (x,main="Hello histogram!!!",col="red")

3. Scatter plot

y<-rnorm(50)
#plot a scatter plot
# Control x-axis and y-axis labels
plot (x,y,main="scatterplot of random samples",
     ylab="y values",xlab="x values")

4. Box plot

boxplot (x,y, main="boxplots of random samples")

5. Bar Plot

barplot(height=perc,
        names.arg=c("CpGi","exon","CpGi","exon"),
        ylab="percentages",main="imagine %s",
        col=c("red","red","blue","blue"))
legend("topright",legend=c("test","control"),
       fill=c("red","blue"))

6. Combine different plots on one page

par(mfrow=c(1,2)) # 

# make the plots
hist(x,main="Hello histogram!!!",col="red")
plot(x,y,main="scatterplot",
        ylab="y values",xlab="x values")