※ 引述《BlueKidds (虾逋虾补)》之铭言：
: ※ 引述《Yyh (我爱批踢踢)》之铭言：
: : Thank you! I have solved it :p
: : hmm, lsfit could be used to verify our answer.
: : btw, when I run the dataset "space_ga",
: : I got the following statement,
: : 错误在solve.default(lhs) : 系统计算上是独特的: 互反条件数=6.78798e-020
: : But "lhs" is invertible (lhs is square and det(lhs)!=0)
: : what's wrong here?
: hi dear pal~
: did you try this data set in lsfit?
: what if it works in lsfit....
yes, it works well in lsfit.