Warning: Regression design matrix is rank deficient to within machine precision.

3 次查看（过去 30 天）

Erik Öhrner 2017-4-25

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/337163-warning-regression-design-matrix-is-rank-deficient-to-within-machine-precision

评论： Abhinav Gaur 2017-7-27

I'm getting this error when I'm trying to do a regression analysis with the function 'model_output = fitlim'. I read somewhere online that it may be due to too many variables (it's a lot in the thousands) but shouldn't Matlab be able to handle it? I'm very new to Matlab just this week so don't have a lot of experience with the software.

I tried to only using about 30 variables and then the function worked but I absolutely need to be able to do with all of my variables. The variables originate from Excel sheets which I only have done log function on beforehand.

4 个评论
显示 2更早的评论隐藏 2更早的评论

dpb 2017-4-25

As Jan alludes to, the problem here is likely not Matlab but the underlying data. How many variables versus how many observations do you have? Does that tell you something?