Conditional (IF) Statement Help. Using a variable to "toggle" the status of an IF statement.

What I'm trying to do is have my function proceed if certain conditions are met. And if a certain condition is met, then it toggles it into a state to go back and run the if statements again. I'm still learning matlab and I need to edit code for my research and don't know where to start. I am running most of my stuff through MGL. But the MGL part is slightly irrelevant to my question. I'm basically setting an experiment to do a certain task at a very specific moment in time. What I'm trying to do is create a randomized occurrence of this task (which I have already figured out) at set intervals that I created. What I want to do is have the IF statements toggle to whether or not they have occurred.

task{1}.parameter.tmstrigger = [0 1 2]; %trigger tms coil, 100ms, 250ms,400ms in that order
stimulus.initTime=mglGetSecs() %if you're not familiar with this, it's similar to the TIC/TOC function
stimulus.t2 = mglGetSecs(stimulus.initTime);
variable = [0 1]; %this is what I'm unsure of
if task.thistrial.tmstrigger==0; %0.1ms
if stimulus.t2greaterequal10
disp('check')

What I want to happen after this "disp('check')" is for the state of task.thistrial.tmstrigger==0; to toggle into a position that tells the program that it's already happened. After the task.thistrial.tmstrigger==0; I'm going to have a task.thistrial.tmstrigger==1; and a task.thistrial.tmstrigger==2 with very similar patterns. The format of what I'm trying to do is as follows (I just don't know how to write the code to do so):

    task{1}.parameter.tmstrigger = 0; %[0 1 2]; %trigger tms coil, 100ms, 250ms,400ms in that order

    Collect the time (which I already have with mglGetSecs)

    ...other code I didn't include in this post that's irrelevant...

    some sort of toggle variable??

    if tmstrigger ==0

       if stimulus.t2>= .10 %%%can I rewirete this as (if tmstrigger== 0 & stimulus.t2>=.1)?
             disp('check')
       end

    SOMEHOW TOGGLE THIS TO SAY THE t2>.10 HAS HAPPENED AND NOT GO BACK TO THIS IF

    end

    if tmstrigger ==1
    same format

    if tmstrigger ==2
    same format

I really hope my question isn't too confusing. I'm a noob at matlab and still trying to understand the very basic logical stuff.

Thank you!

Answer 1

[Steven Lord]

Try something like:

 needToDisplay = true;
 for k = 1:10
   if needToDisplay && k >= 5 % the first AND second conditions must be satisfied
     fprintf('Currently, k is %d\n', k);
     needToDisplay = false;
   end
   if k == 8
     needToDisplay = true;
   end
 end

This should display for k = 5 (needToDisplay is true and 5 is greater than or equal to 5) and k = 9 (needToDisplay is true, it was changed when k was equal to 8 inside the second IF statement, and 9 is greater than or equal to 5.) It should not display for any other number, as either needToDisplay is false (for k = 6, 7, 8, and 10) or k >= 5 is false (for k = 1, 2, 3, 4.)

If you wanted to display if either the first OR the second conditions (or both) were satisfied, use || instead of &&.

[Alexander Clark]

Thank you!