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Rolling 13 wks data not working but rolling header working

arlu1201

New Member
We need to display graphs which are rolling-13 weeks. We have been able to get the week numbers to roll. The data is on the same sheet on the left hand side - columns BI to DH). The charts' source data that we are going to make flexible (13-wk rolling) is towards the right end of the sheet (cols GA to GM). How do we get the values from the left side to this chart area (GA to GM) in such a way that when the week number on the top changes, the data should change below to point to the correct week?
 
Arlu

If columns GA to GM are numbered 1 to 13 or as Dates 2/2/10, 9/2/10, 16/2/10 (D/m/y or any other format), you can use a Hlookup to retrieve the data for each row by referencing the date in the column above.


If your data area BI1:DHx is named Data

in any cell below GA1 type the following


=HLOOKUP(GA$1,Data,ROW())

and then copy across to GMx


Then base your chart on GA1:GMx


If GA1 is 2/2/2010 and GB1 adds 7 to GA1 etc across to GM1

By Changing the values of GA1 you can change the date range and hence the chart will move


This can be linked to a Form Control to control the starting date of the range


Another way to make dynamic charts is Named Ranges, but read about that here

http://chandoo.org/wp/2009/10/15/dynamic-chart-data-series/
 
Our columns GA to GM are not numbered thru dates but as Wk01, wk02, etc. Also we observed that if the wk number field is a value, hlookup works. If its a formula, it doesnt. Does hlookup work only if the value you are looking up is a value and not a formula?
 
Arlu

I can't replicate your problem, as Hlookup is working fine with values, equations and even mixed case Wk01 vs wk01.


I would suggest that you check that the equations in BI1:DH1 and GA1:GM1 aren't adding any leading spaces, trailing spaces or spaces in the middle.

ie:

Normal "Wk01"

Leading " Wk01"

Trailing "Wk01 "

Mid "Wk 01"

will all be treated differently by HLookup
 
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