Mostafa Abdelkhalek Posted March 13, 2020 Share Posted March 13, 2020 Hi folks; if i have a column of x and a column y in spotfire with column x begin a date column. how would i calculate the derivative of y wrt x (dates) Link to comment Share on other sites More sharing options...
Tyger Guzman 2 Posted March 13, 2020 Share Posted March 13, 2020 Check out this post:https://community.spotfire.com/questions/how-calculate-derivative Link to comment Share on other sites More sharing options...
Mostafa Abdelkhalek Posted March 13, 2020 Author Share Posted March 13, 2020 Thanks for your reply. the thing is that way does not work with dates. i am using the number of days difference between 2 dates as (x). hope you have a way for this Link to comment Share on other sites More sharing options...
Tyger Guzman 2 Posted March 13, 2020 Share Posted March 13, 2020 The difference between two dates is not a date , it would be an integer (number of days) pass that as x Link to comment Share on other sites More sharing options...
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