how to finds consecutive numbers in an array

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Douwe Horsthui 2019-9-21

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https://ww2.mathworks.cn/matlabcentral/answers/481485-how-to-finds-consecutive-numbers-in-an-array

编辑： Douwe Horsthui 2019-9-21

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Hi everyone,

I have a question about finding consecutive numbers in a matlab array.

Currently my script imports .log files that are created by a experiment run on Presentation. In the array this creates I see all of the trigger codes, but I only want to know when a specific trigger code happens followed by a different trigger code (button press)

This is what I came up with so far but I am stuck.

clear all
dir='C:\Users\Desktop\paradigm\'
total_blocks = 1 %amount of blocks
   data1 = []
   
for blocks=1:total_blocks
    [x] =importPresentationLog([dir '10049-Entrain_Vis' num2str(blocks) '.txt']); %importing logfile
    data1 = [data1, x] % all info from all the logfiles go here.   
end  
 No_of_Trials=length(data1); 
for i=1:No_of_Trials
    
    
    trigger{i}=(data1(:,i).code); 
    Time{i}=(data1(:,i).time);
    
end
    [INDEX_CODE42]=find(strcmp(trigger,'42')==1) %%finding the definde trigger (42) and creating an index 
    

However I want to look specifically for '42' followed by '100' OR '42' followed by any possible trigger followed by '100'

     
    Next42=trigger(INDEX_CODE42+1); %gives the triggers following the previous one (42)
    code100=[INDEX_CODE100]
    NextNext42=trigger(INDEX_CODE42+2)%gives the second triggers following the previous one (42)
    Time42=Time(INDEX_CODE42+1);
             Time42x=Time(INDEX_CODE42)
             RT = cellfun(@minus,Time42,Time42x,'UniformOutput',false)

This part works but since it includes every 42 trigger and not only the correct ones ( the ones followed by a button press) I include all the trials that didn't get a respons.

I hope someone is able to help me out with this.

Thank you so much!