AmateurExcelUser
New Member
- Joined
- Apr 7, 2014
- Messages
- 14
I have a large time-series array, say, Array (1 to 5000, 1 to 20). Column 1 has an index number starting at 1, column 2 has the incrementing date. Column 10 has a data series and Column 11 has the natural log LN() of Column 10.
For each row (ignoring the first few rows where I test for non-blank data) I want to calculate in Column 12 the SLOPE of all the data in Column 11 up to that point (but not necessarily starting at row 1 if there is invalid or blank data in the early rows).
For example, say that I have tested that the first 20 rows in Column 11 has blank data which I want to ignore. In a loop from n=1 to 5000, say at the point where n is 100:
I want Array (100,12) to be the Slope of all the data from Array (21,11) to Array (100,11)
On the next increment where n = 101, I want Array (101,12) to be the Slope of the all data from Array (21,11) to Array (101,11)
Does anyone know how I can assign the relevant part of my Array to the SLOPE function on a dynamic basis within a loop please? I want to keep all data in arrays and not use worksheets for storing data.
Many thanks
For each row (ignoring the first few rows where I test for non-blank data) I want to calculate in Column 12 the SLOPE of all the data in Column 11 up to that point (but not necessarily starting at row 1 if there is invalid or blank data in the early rows).
For example, say that I have tested that the first 20 rows in Column 11 has blank data which I want to ignore. In a loop from n=1 to 5000, say at the point where n is 100:
I want Array (100,12) to be the Slope of all the data from Array (21,11) to Array (100,11)
On the next increment where n = 101, I want Array (101,12) to be the Slope of the all data from Array (21,11) to Array (101,11)
Does anyone know how I can assign the relevant part of my Array to the SLOPE function on a dynamic basis within a loop please? I want to keep all data in arrays and not use worksheets for storing data.
Many thanks
