Substract only higher then a limit? Please find the example program below.

Suppose

dataI = [100;200;300;100;200;300];

limit = 150;

if any(dataI >= limit)

disp('There is at least one value above the limit.')

DataI_with_Neg = dataI - 100; %% Here I want to sub 100 from all the values which are higher than limit = 150 and get new data after sub%%

else

disp('All values are below the limit.')

end

Answer 1

[madhan ravi]

https://blogs.mathworks.com/loren/2013/02/20/logical-indexing-multiple-conditions/ - this should get you started

DataI_with_Neg = dataI(dataI > limit) - 100;
                   %  ^^^^^^^^^^^^^^^--- add this (datas which are higher than 150)

[Rakesh Yadav Kodari]

Thank you for response, The problem is if i use the code as above it only return the values which are substracted.

I need to get the whole data along with the sub data.

[madhan ravi]

Data_higher_than_limit = dataI(dataI > limit) 
Data_higher_than_limit_subtracted_by_100 = dataI(dataI > limit) - 100

[John D'Errico]

loc = dataI >= 150;
dataI(loc) = dataI(loc) - 100;

[Stephen23]

Perhaps this?:

>> dataI = [100;200;300;100;200;300]
dataI =
   100
   200
   300
   100
   200
   300
>> limit = 100;
>> idx = dataI >= limit;
>> dataI(idx) = dataI(idx)-100
dataI =
     0
   100
   200
     0
   100
   200

[madhan ravi]

Ah thank you John D'Errico & Stephen Cobeldick now it's clear what the OP wants.

[Rakesh Yadav Kodari]

Thank you all.

Code from John D'Errico worked.

loc = dataI >= 150;

dataI(loc) = dataI(loc) - 100;