[solved] setting cycles

drorgarbi

hi
I am trying to define cycle number from a variable and not a specific number.
I tried to edit the loop object as

set cycles [length]

but it didn't worked
any suggestions?
thanks
p.s. - I love using opensesame - you are doing a great job!

lvanderlinden

Hi,

For the moment, it is not possible to use a variable for setting the number of cycles. You may want to consider the following solution to run a given sequence for a variable number of times:

1.) Directly append your trial sequence to a block sequence (a block loop is not necessary, because we'll determine the number of cycles ourselves)
2.) Set the Run-if statement of the trial sequence to 'never'
3.) Add an inline_script to the beginning of your block sequence

4.) And put something like the following in its Run phase tab:

# Loop through a cycle of the desired length:
for i in range(self.get("n_cycles")):
    exp.items["trial_sequence"].prepare()
    exp.items["trial_sequence"].run()

I uploaded an example experiment here (download, change the extension to .opensesame and open as normally):

• http://pastebin.com/T9P0TUVp

Does that make sense?

Cheers,

Lotje

drorgarbi

works like a charm!
your solution is very simple and it is now a part of my exp.
before your replay I managed to do it with "repeat_cycle" - can you see a downside to my solution?
thank you very much!
Dror

lvanderlinden

Hi Dror,

I think your solution is a very good idea! I can't see any advantages for one approach above the other.

Good luck!

Lotje