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中国人民大学 统计学院 王 剑

From SAS to R. 中国人民大学 统计学院 王 剑. 既熟悉 SAS ，又熟悉 R. 你属于哪一类 ?. 熟悉 SAS ， 但不熟悉 R. 不熟悉 SAS ，但熟悉 R. 既不熟悉 SAS ，也不熟悉 R. SAS 和 R 的本质区别. SAS Reads one observation at a time. R Requires all the data to be in memory. Code. R. SAS.

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中国人民大学 统计学院 王 剑

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  1. From SAS to R 中国人民大学 统计学院 王 剑

  2. 既熟悉SAS，又熟悉R 你属于哪一类? 熟悉SAS， 但不熟悉R 不熟悉SAS，但熟悉 R 既不熟悉SAS，也不熟悉 R

  3. SAS和R的本质区别 SAS Reads one observation at a time R Requires all the data to be in memory

  4. Code R SAS Example=data.frame(Name=c("Zhao","Wang"), X1=c(22,24),X2=c(98,96)) mean(Example[,2-3]) Data Example; input Name$ X1-X2; Xm= mean(Of X1-X2); cards; Zhao 22 98 Wang 24 96 ; proc print; run; Name X1 X2 1 Zhao 22 98 2 Wang 24 96 X1 X2 23 97 Obs Name X1 X2 Xm 1 Zhao 22 98 60 2 Wang 24 96 60 Output

  5. FREE -—— R for SAS SPSS users, Bob Muenchen

  6. SAS的五大部分 Data input and management statements SAS Data Example; input Name$ X1-X2; Xm= mean(Of X1-X2); cards; Zhao 22 98 Wang 24 96 ; proc print; run; Statistical and graphical procedures Output Delivery System A macro language A matrix language to add new algorithms(IML)

  7. ThankYou！

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