poly1 gives error "insufficient data"

I'm using poly11 to fit some data and keep getting this error

Error using fit>iFit (line 269)

Insufficient data.

You need at least 2 data points to fit this model.

Do you know what causes this? Thanks. The array is called data and when I check its dimensions, it seems as if there is enough data.

[nx ny] = size(data)

nx =

9

ny =

32768

What casuses this?

[Mathieu NOE]

hello

please post the entire ode including the data

tx

[Mathieu NOE]

sorry typo

I meant :

please post the entire code including the data

[Mahesh Taparia]

Hi

Can you share the code which you have used?