楼主: 一个大苹果
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[原创博文] sas 提速 编程效率 |
博士生 93%
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回帖推荐Please my posting on "sas 运行速度 问题".
I highlight the point here.
1) prepare you data once and arrange it in groups and sort it by groups. This will save your time on segmenting data and appending your results.
2) regression once using by statement with option of p= on output statement. This will save you a lot of time on regressing them separately and on calculating the predict valu ...
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