partial trendline......

jwchu3

Board Regular
Joined
Jan 22, 2006
Messages
85
Hi,

I have a load / deflection curve for a steel section. I need to find the slope of the first portion of the chart. i know that i can do this by creating a seperate data series - limited to these data points in the range and then adding a trendline to that series.

is there another way of limiting the trendline to a certain number of data points without having to add this additional series??? I am happy to use VBA if necessary.

cheers,
Jez
 

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hatman

Well-known Member
Joined
Apr 8, 2005
Messages
2,664
If all you wwant is the slope (of a straight line), why not use the Slope() function? Either way, you can use the Offset() function to define which portion of the data to use for generating your results.
 

tusharm

MrExcel MVP
Joined
May 28, 2002
Messages
11,029
No, a trendline cannot be limited to a subset of the dataset (well, unless you use a moving average line but that doesn't provide any usable coefficients).

Shouldn't be a big deal adding the limited number of data points as a 2nd series. You can always "hide" this series by making all associated elements transparent.
Hi,

I have a load / deflection curve for a steel section. I need to find the slope of the first portion of the chart. i know that i can do this by creating a seperate data series - limited to these data points in the range and then adding a trendline to that series.

is there another way of limiting the trendline to a certain number of data points without having to add this additional series??? I am happy to use VBA if necessary.

cheers,
Jez
 

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