1 安装PopLDdecay，优点：方便不需要转换格式（plink需要）
## 下载
git clone https://github.com/BGI-shenzhen/PopLDdecay.git
## 安装
cd PopLDdecay
chmod 755 ./configure
./configure
make
cd ./bin/
./PopLDdecay
## 添加到环境变量
vim ~/.bashrc
I 键入下图 1
图1 在~./bashrc 文件中添加代码
source ~/.bashrc
2 计算LD Decay
PopLDdecay -InVCF SNP.filtered.vcf -SubPop zy.list -MaxDist 5000 -OutStat out.zy.stat
PopLDdecay -InVCF SNP.filtered.vcf -SubPop cb.list -MaxDist 5000 -OutStat out.cb.stat
PopLDdecay -InVCF SNP.filtered.vcf -SubPop dy.list -MaxDist 5000 -OutStat out.dy.stat
3 多亚群绘图
ls *.stat.gz | awk -F "." '{print $0"\t"$2}' >ld_stat.list
perl ~/biosoft/PopLDdecay/bin/Plot_MultiPop.pl -inList ld_stat.list -output ld_stat5000.multi
