Calculate Weekly Value (7 days running)

可以用以下程序计算7天的平均值，7天是指从测量天前3天到其后3天。

Weekly value is the average value in 7 days from 3 days before and 3 days after measurement day.

% calculate weekly ET and SM
function V_running = Weekly_running(ET)
V_running=zeros(length(ET),1);
for p=1:length(ET)
 if (p<3+1)
 % the former three
 V_running(p)=nanmean(ET((p-(p-1)):(p+(p-1))));
 elseif (p>=length(ET)-3)
 % the backer three
 V_running(p)=nanmean(ET((p-(length(ET)-p)):(p+(length(ET)-p))));
 else
 V_running(p)=nanmean(ET((p-3):(p+3)));
 end
end