## SNP CHR BP P
## 1 rs1 1 1 0.9148060
## 2 rs2 1 2 0.9370754
## 3 rs3 1 3 0.2861395
## 4 rs4 1 4 0.8304476
## 5 rs5 1 5 0.6417455
## 6 rs6 1 6 0.5190959
manhattan(df4, main = "GWAS results", ylim = c(0, 8),
cex = 0.5, cex.axis=0.8, col=c("dodgerblue4","deepskyblue"),
#suggestiveline = F, genomewideline = F, #remove the suggestive and genome-wide significance lines
chrlabs = as.character(c(1:22)))