Extract data from file and split using Demux in simulink

Hi,, I've a small problem with demux. My data comes from an external '.mat' file (it is 2X20 data, I checked it when I opened the '.mat' file matlab). Now I have to extract the 2nd row data. And I want it split, like first five elements, next five etc., So I used Demux and entered the vector [5 5 5 5]. and I get the following err.

_*First error:

Invalid setting for input port dimensions of 'call_stats_block2/Demux'. The dimensions are being set to 1 This is not valid because the total number of input and output elements are not the same

Second err:

Error in port widths or dimensions. Output port 1 of 'call_stats_block2/From File' is a one dimensional vector with 1 elements.* _

Is there any simple way to get data from file and split the same. Guys plz help, scratching my head for long time....

Answer 1

[Kaustubha Govind]

So does that mean you need to split your data into 8 parts (since you have a total of 40 elements in your imported signal)? If yes, enter "Number of outputs" as 8 on the Demux block's dialog.

[Joe Ajay]

Tanx fr the response, actually I need first 5 elements of 2nd row and it next 5 of 2nd row...goes like that.And if u see the 2nd error it is still more confusing..Hw come when opened wit matlab it shows 2X20 array but give err as only 1 element is present.