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Modifying MS Graph data using VBA

Hi all,

Just wondering if there is a way to modify or change the RowSource property of the MS Graph object?

I have a report with a graph embedded in it but I can find a way to change the SQL query behind the graph. Anything I try doesn't work (i.e. like trying to set GraphObject.Application.DataSheet properties). I get errors like "object doesn't support that property or method" or others to that effect.

I can set the underlying query using a macro by changing the value of [Reports]![MainReport]![GraphObject].[RowSource] using SetValue, but how on earth do I do this using VBA? I would have thought that this would have been a handy feature to have so why isn't it easy to find (or maybe I'm just going blind)

any help in this matter would be great.

Bart.
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bartman123
Asked:
bartman123
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1 Solution
 
TextReportCommented:
If the graph is on a form then there are no problems but in a report you cannot change the rowsource property once the report is opened. Therefore you have to modify the SQL of the Query if you can.

Where are you running the Macro from?
If you go into the design of the macro and do a save as you can save it as a moule and you will see it there.

If you are running this from the Report open event then you can say

Me!GraphObject.RowSource = "MyNewQuery"

Cheers, Andrew
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bartman123Author Commented:
The macro is run as an onclick event for a form button. I actually pinched it from a microsoft access example that was converted from 97 to 2000 (I forget the article number but the file is Grphsm97.exe). It works well but I'd rather have the VBA code do it.

I've converted the macro to a module as you suggested so I'll give that a burl and see what happens...

For those who are interested the converted macro looks something like this

DoCmd.Echo False, ""
DoCmd.OpenReport "MainReport", acViewDesign, "", ""
Reports!MainReport!GraphObject.RowSource = "SELECT First _
    (results_local.Future_Intentions) AS [Future_Intentions Field], Count _
    (results_local.Future_Intentions) AS NumberOfDups FROM results_local _
    GROUP BY results_local.Future_Intentions HAVING _
    (((Count (results_local.Future_Intentions))>1));"
DoCmd.RunCommand acCmdSave
DoCmd.OpenReport "MainReport", acViewPreview, "", ""
DoCmd.Echo True, ""
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TextReportCommented:
If you want you could save the report so the graph is based on a query then use code to modify the query, this will be required if yiou decide to use an MDE file.

You will need to check you have a reference to Microsoft DAO to do this go to your module and from the VBA window go to the Tools Menu, References and ensure the latest version of Microsoft DAO is selected.

then change your OnClick event to

dim db as database
dim qd as querydef

set db = currentdb()
set qd = db.QueryDefs("MyGraphQuery")
qd.sql = "SELECT First(results_local.Future_Intentions) AS [Future_Intentions Field], Count _
    (results_local.Future_Intentions) AS NumberOfDups FROM results_local _
    GROUP BY results_local.Future_Intentions HAVING _
    (((Count (results_local.Future_Intentions))>1));"
qd.close

DoCmd.OpenReport "MainReport", acViewPreview, "", ""

Cheers, Andrew
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bartman123Author Commented:
Thanks TextReport for your answers....the first one did the trick and is what I need to get the job done....It has opened up another problem but I'll leave that for another topic....(unless you know how to display more than one set of results per graph....tell me what is wrong with the following statement?)

SQL_WorkingConditions = "SELECT results_local.OHnS, Count(results_local.Amenities) _
  AS Amenities, Count(results_local.OHnS) AS [OHnS Practices] _
  FROM results_local GROUP BY results_local.OHnS _
  HAVING (((Count(results_local.Amenities))>0) AND ((Count(results_local.OHnS))>0));"

Both Amenities and OHnS contain one of 5 values. The resulting graph shows two columns per item but they both show the same thing.

Bart
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TextReportCommented:
You probably need to group by the first field in your select but as you say that's another issue, cheers, Andrew
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