XL: Visual Basic Module to Create Gantt Chart

ID: Q123260

The information in this article applies to:

SUMMARY

In Microsoft Excel, you can create Gantt Charts that show task status for project planning and control. The example in this article shows the steps necessary to generate this type of charts using a Visual Basic, Applications Edition, procedure.

MORE INFORMATION

The following Visual Basic macro creates a Gantt Chart.

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Enter the following in a Visual Basic module:

Sub gantt_chart()
    Dim rge As Variant
    Dim mn As Variant
    Dim shtname As Variant
    'defines the variables
         rge = Selection.Address()
        'get the cell address
        mn = Selection.Offset(1, 1)
        'return the min value for the scale
        Title = InputBox("Please enter the title")
        'Asks the user for title
        shtname = ActiveSheet.Name
        'retains the name of current sheet
        Application.ScreenUpdating=False
        'Turns screen updating off
        Charts.Add
        'Create a paper model chart
        ActiveChart.ChartWizard Source:=Sheets(shtname).Range(rge), _
            Gallery:=xlBar, Format:=3, PlotBy:=xlColumns, CategoryLabels _
            :=1, SeriesLabels:=1, HasLegend:=1, Title:=Title, _
            CategoryTitle:="", ValueTitle:="", _
            ExtraTitle:=""
        ' Basic chart definition
        ActiveChart.Legend.Delete
        'deletes the legend
        ActiveChart.SeriesCollection(1).Select
        'activates series 1
        With Selection.Border
            .Weight = xlThin
            .LineStyle = xlNone
        End With
        'definition for the border for series 1
        Selection.InvertIfNegative = False
        'turns Invert if negative to false
        Selection.Interior.ColorIndex = xlNone
        'indicates that the area is set to none
        ActiveChart.PlotArea.Select
        'select the chart plot area
        ActiveChart.Axes(xlCategory).Select
        'select axis(1)
        With ActiveChart.Axes(xlCategory)
            .ReversePlotOrder = True
            .TickLabelSpacing = 1
            .TickMarkSpacing = 1
            .AxisBetweenCategories = True
        End With
        'axis 1 definition
        ActiveChart.Axes(xlValue).Select
        'select axis(2)
        With ActiveChart.Axes(xlValue)
            .MinimumScale = mn
            .MaximumScaleIsAuto = True
            .MinorUnitIsAuto = True
            .MajorUnitIsAuto = True
            .Crosses = xlAutomatic
            .ReversePlotOrder = False
            .ScaleType = False
            .HasMajorGridlines = True
            .HasMinorGridlines = False
        End With
        ' Axis(2) definition
 End Sub

Example of How to Use The Macro

1. Open a new worksheet and enter the following values:

     A1:            B1: START        C1: DAYS          D1: DAYS
     A2: TASK       B2: DATE         C2: COMPLETED     D2: REMAINING
     A3: TASK-1     B3: 1/1/91       C3: 150           D3: 15
     A4: TASK-2     B4: 5/1/91       C4: 21            D4: 31
     A5: TASK-3     B5: 7/1/91       C5: 0             D5: 114
     A6: TASK-4     B6: 10/1/91      C6: 0             D6: 4
     A7: TASK-5     B7: 10/15/91     C7: 0             D7: 31
     A8: TASK-6     B8: 11/1/91      C8: 0             D8: 2

2. Select cell A2 and format it with the month/day/year date format you
   want to use on the chart.

3. Highlight A2:D8. To run the macro, choose Macro from the Tools
   menu, and select the gantt_chart macro. In version 97, click Macro on
   the Tools menu, then click Macro and select the gantt_chart macro.

4. Enter the chart title when prompted.

The Gantt chart should now be displayed on a new chart sheet. Additional formatting can be added as needed.

For additional information on creating a Gantt, please see the following article(s) in the Microsoft Knowledge Base:

   ARTICLE-ID: Q73281
   TITLE     : Excel: Creating Gantt Charts


REFERENCES

"User s Guide," version 5.0, chapters 15, 17, 18

Additional query words: 97 7.00 5.00 gannt

Keywords          : kbprg kbdta KbVBA 
Version           : WINDOWS:5.0,5.0c,7.0,97
Platform          : WINDOWS

Last Reviewed: May 17, 1999