Why did I get this error? Array indices must be positive integers or logical values. I copied and pasted MATLAB sample code

Array indices must be positive integers or logical values.

Error in eyeMovement (line 30) latest_gaze_data = gaze_data(end);

I copied and pasted exact same sample code from MATLAB: http://developer.tobiipro.com/matlab/matlab-step-by-step-guide.html

Even if I change it to gaze_data(0); or gaze_data(1); still same error.

Answer 1

[Image Analyst]

I'd recommend you read that section of the FAQ: https://matlab.wikia.com/wiki/FAQ#How_do_I_fix_the_error_.22Subscript_indices_must_either_be_real_positive_integers_or_logicals..22.3F for a really good explanation. Then read the rest of the FAQ for more good info that will help you later.

Answer 2

[Star Strider]

Check to see what ‘gaze_data’ is in your workspace:

S = whos('gaze_data')