Graph & Chart: Data Source Changes Monthly

Nov 19, 2006

I am trying to write a macro that will automatically change the source data for a graph. This is an existing graph that is on tab GraphYTD and the data for the graph comes from DataYTD. The number of rows of data will change monthly, but I would like to use the same graph template every month. Here is my

Sub SortYTD()
Dim myBottom As Long
myBottom = Sheets("DataYTD"). Range("B65536").End(xlUp).Row
ActiveChart.SetSourceData Source:=Sheets("DataYTD").Range("F2:I" & myBottom)
ActiveChart.Location Where:=xlLocationAsObject, Name:="GraphYTD"

End Sub

I am getting Runtime error 91 - object variable or with block variable not set.

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Apr 28, 2009

I have a column line chart to which I add data monthly and then have to manually update the "source data" to reflect the added data on chart. This is a rolling graph, which mean that I have to remove data for one month(from last year) and then include the new month's data. Is there any way on automating this process...like a macro or something, so once I add the data excel automatically removes one month of old data and make changes to include fresh data. Eg Currently chart is based on data from A2:F2 and I add new data to cell G2. I need something which automatically update the source data to cell B2:G2.

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ActiveChart.SeriesCollection(1).Values = Worksheets("My Worksheet").Range("A1:F1")

The issue I am tackling with is a graph that already has preexisting data in the Series object, and I just need a quick and easy way to find the address of this data set.

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I have used the search function but can't seem to find a suitable solution.

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I can create the Data Validation rules, use a Match formula to produce the reference for an Index formula and i have created a bunch of Named Ranges to work with and can easily generate the FIRST value to plot.

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I have attached my problem for reference : Excel Problem.xlsx‎

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I have a spreadsheet created in Excel 2003 (which is what we use at work, unfortunately).

My employees periodically take a test to ensure they have certain items memorized (or are making progress to that end). The spreadsheet rows show all 46 of my employees, and their test scores. The columns are the dates that the tests are administered. I can create a line graph based on the chart data, and interpolate these data with no problems.

The problem is that there are 46 employees! 46 lines on the same graph make for a very cluttered, hard to understand visual. I want to simplify the view by "filtering out" some of the data.

I have an additional column in my spreadsheet for each employee's work area (Area 1, Area 2, etc), and another column with data based on first letter of last name (the values here could be "A-G", "H-M", "N-S" and "T-Z", for example). I figure i could filter my line graph based on these two columns. For example, somehow select just Area 1, and reduce the number of lines on the graph to 16. Or better yet, Choose "Area 2" AND "A-M" and end up with 7 employees (and therefore 7 lines on the graph).

Here's what i have tried:

1) Select the work area column, and use the Filter, which created a drop-down list at the column heading. When i use this drop-down list, i can easily filter the data in the worksheet by Work Area, but this is not reflected in the line graph, which still shows all 46 lines. The problem was that i forgot that i had set the Calculation Options to "Manual". Setting this to "Automatic" (or leaving it on Manual and pressing F9) solved the problem, as the chart now updates when i use the filters. Calculation options are under the "Formula" tab in 2007, or in Tools -> Options -> [either calculation or formula, i forget what it's called] in 2003.

2) Create several separate line graphs in several separate sheets. I wouldn't want to assign someone else the task of maintaining a spreadsheet of such inefficient design.

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all I have at the moment is the generic code for creating a graph (which I reverse engineered from a macro I recorded).

Code:

Charts.Add
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The cell that holds the value range is Graphics!L6, and the cell that holds the labels range is Graphics!L7.

The current values that these cells hold are:

L6:
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L7:
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A B C
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2. dp ss ff
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4 .3 .4 .4
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I have tried:-

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