how to get the index from the plot for a specific condition

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Here is my code:::::
myX = [4453,5157,1,2302,191,1294,402,4340,1,2145,1,705,1322,1450,1210,1310,1209,1300,1475,1603];
threshold = 1200;
plot(myX)
I need to store the index of values which is greater than 1200.
like
myans = [1,2,4,6,8,10,13,14,15,16,17,18,19]
any idea..

Accepted Answer

KSSV
KSSV on 11 Feb 2021
idx = myX>1200 ; % logical indexing
myX(idx)
idx = find(idx)

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