MATLAB: Time function. Execute a script every X seconds

callbackmatlab functiontimetime seriestimer

I am trying to execute the following 3 lines of script every minute. For this, i am using the timer function but it seems that the 3 lines that i need are not executed properly.
refresh1.m (the 3 lines that i want to execute every X seconds)
fromdate = now-1;
todate = now;
timeseries(c,sec,{fromdate,todate},60);
timer function:
time= datestr(now)
ceas = timer
set(ceas,'executionMode','fixedRate')
get(ceas)
set(ceas, 'TimerFcn', 'refresh.m', 'Period', 5) %run the timer every X seconds  and execute the --disp(rand)--
get(ceas)
startat(ceas, '04:04:00')
Any idea how to do it? thank you in advance

Best Answer

G - since the timer callback (that function that you wish to execute every sixty seconds) is a function, then you need to assign a function handle rather than a string giving the name of the file that you wish to execute. Perhaps this is different for your version of MATLAB, but for mine (R2014a), I would do the following
 set(ceas, 'TimerFcn', @refresh, 'Period', 60)
where, in my refresh.h file I would have
 function refresh(source, eventdata)
 fromdate = now-1;
 todate = now;
 %timeseries(c,sec,{fromdate,todate},60);
For all timer callbacks, there are two default input parameters, source and eventdata, so you need to define them as inputs to the function.
In the above, I've commented out the call to timeseries because it is unclear what c and sec are (or why you are passing a cell array into timeseries). What is the intent here? Where are these variables (c and sec) coming from?
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