MATLAB real time serial data plot

[dmta]

Hi all,

I am trying to use this code to plot the serial data comming from my serial port

But I am having this error

??? In an assignment A(I) = B, the number of elements in B and
I must be the same.

Error in ==> real_time_data_serial at 80
voltage(count) = fscanf(s,'%f');

What should I do ?

Regards

 

[dougy83]

There are most likely multiple numbers coming in the serial port, and therefore fscanf will return an array of values.

>> s = '455.54 55.5'

s =

455.54 55.5

>> data(1) = sscanf(s, '%f')
In an assignment  A(I) = B, the number of elements in B and I
must be the same.
 
>> data = sscanf(s, '%f')

data =

  455.5400
   55.5000

I'm using sscanf on a string rather than fscanf on a serial port, but I would assume the result to be the same