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如果我有一个 10X2 的矩阵,并且将在 SAS 中存储另一个变量下的矩阵长度值(因此为 10)......它是如何在 PROC IML 中完成的?
你有 NROW 和 NCOL 功能,这就是你要找的吗?
proc iml; a= {1 2, 2 5, 3 6, 4 1}; r = NROW(a); c = NCOL(a); print r c; quit;