I keep encountering an error when trying to create an iddata object, and I can't understand why

Hello,

I am trying to convert a vector to an iddata object. I have a vector (y) of dimension [7800 X 1],and there is nothing particularly unique about it.

If try to convert to an iddata object as follows:

y = iddata(y);

I get the following error:

Error using iddata (line 193)

The value of the "OutputData" property must be a double matrix or a cell array of such matrices.

I can't for the life of me figure out what is wrong with my timeseries. I'm able to convert vectors of random numbers to iddata object. Does anyone have a clue why I'm getting this error.

All my thanks.

Answer 1

[omer cakmak]

Thanks man. In my problem they were two important points;

1) Convert type single to double ie. double(y).

2) Take transpose.

Answer 2

[L T]

Um, I figured it out. My vector was single precision.

LT

[Leonardo Medeles]

how?

Answer 3

[Fei Yuan]

Thanks for the answers. I got the same issue. After converting the data to "double" data type, it works good.