[~,~,raw]=xlsread('C:\Users\ThinkPad\OneDrive\FOF\latestmatlab\NV.xlsx','类型_4');%读取的e... [~,~,raw]=xlsread('C:\Users\ThinkPad\OneDrive\FOF\latest matlab\NV.xlsx','类型_4');
%读取的excel文件中第一列是时间，后面几列是指数数据
raw = raw(2:end,:);
ID = year(raw(:,1))*12;

就在这个取 year的时候，提示：
Error using datevec (line 103)
The input to DATEVEC was not an array of strings.

Error in year (line 37)
c = datevec(d(:));

Error in year_return (line 4)
ID = year(raw(:,1))*12;