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我要的是:選擇數據從MySQL(與環()?)中的R
m1 <- dbGetQuery(mydb, "select out,in from table where value > 1")
m2 <- dbGetQuery(mydb, "select out,in from table where value > 1.1")
m3 <- dbGetQuery(mydb, "select out,in from table where value > 1.2")
m4 <- dbGetQuery(mydb, "select out,in from table where value > 1.3")
.
.
.
m101 <- dbGetQuery(mydb, "select out,in from table where value > 10")
然後
n1 <- degree(graph.data.frame(m))
n2 <- degree(graph.data.frame(m2)
.
.
.
我想簡化這些代碼與應用功能,但我有沒有線索:^(
您要查詢的「值」的順序是它的完整順序嗎?如果是這樣,那麼你可以查詢數據庫的任何值和數據框後面的子集... – PavoDive