在元编程中,你可能需要把多列组合成一个 matrix, 参考:
x = `x+string(1..3)
residual = makeCall(member, makeCall(ols, sqlCol(`factor0), makeUnifiedCall(matrix, sqlCol(x)), 1, 2), "Residual")
sql(residual, t).eval()
我想使用元编程对多列进行多元回归,但是出现了报错:
sql(sqlColAlias(makeUnifiedCall(toArray, makeUnifiedCall(ols, (sqlCol(`rr), sqlCol(t.columnNames()[12:16]), false, 0))), `param), from=t.nullFill(0.0), groupBy=sqlCol(`month`symbol)).eval()
错误如下
::evaluate(sql(sqlColAlias(makeUnifiedCall(toArray, makeUnifiedCall(ols, (sqlCol("rr"), sqlCol(::columnNames(t)[12 : 16]), 0, 0))), "param"), ::nullFill(t, 0), , sqlCol(["month","tsymbol"]))) => The dimension of dependent doesn't match the dimension of independent factors.