calculate change in open interest

hag

New member
How can I write a script to calculate the change in open interest as a column on the option chain? Also I wanted to highlight the highest open interest row in the options chain for call or put row is this possible? How can I do this?
 
How can I write a script to calculate the change in open interest as a column on the option chain? Also I wanted to highlight the highest open interest row in the options chain for call or put row is this possible? How can I do this?

a study runs on 1 ticker at a time, 1 row. a study doesn't know about the other rows, so they can't be sorted.
a study would have to calculate all the numbers, then determine how the current number relates to the others.

in trade tab
click on layout at top
pick customize
find an unused custom study name
click on add item, to add it to current list
click on the icon next to the name
click thinkscript
paste in code
pick time , day

i set the time to day
Code:
def oi = openinterest();
def chgoi = oi - oi[1];
plot z = chgoi;

only the first 19 column studies will show up in option chain list
 

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