Re: Polyfit with three variable

[Doug Stewart]

On Sun, Dec 20, 2020 at 8:16 AM swagata Mukherjee <swagata123456@gmail.com> wrote:

Hi,

The files are attached.

Regards,

Swagata

On Sun, Dec 20, 2020 at 5:57 PM Doug Stewart <doug.dastew@gmail.com> wrote:

On Sun, Dec 20, 2020 at 7:13 AM swagata Mukherjee <swagata123456@gmail.com> wrote:

Hi,

I need help with linear regression with three variables.

I was running the following code:

   N_Liner=1; 
    P_Liner=polyfit(G,Temp,I_PV,N_Liner)

getting the following error "error: polyfit: N must be a non-negative integer".

Is there any way out?

Regards,

Swagata

Show us what these values are.

G

Temp

I_PV

N_Liner

--

DAS

If you look at the help for polyfit:

help polyfit

You will see that your inputs to polyfit are wrong. 

 you should give it the x and y values and the deg. of polynomial that you want.

--

DAS