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macro in excel

Posted on 2016-09-01
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Last Modified: 2016-09-21
Hi
I m trying to compute simulate 500 lines, each line cosists of 260 random points( rand () ) So what I wanna do is generate a graph with 500 paths by using macro in Excel. Can you briefly show me how it works?
thats a graph with 100paths
Regards
Sijin
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Question by:sijin wu
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xtermie earned 1600 total points (awarded by participants)
ID: 41779965
You can use this macro to create the random numbers
Sub randomnums()
Dim nocols, norows As Integer
Dim ws As Worksheet

norows = 200    'you can change these
nocols = 500    'you can change these
Set ws = Application.ActiveSheet

Application.ScreenUpdating = False

For i = 1 To norows
    For j = 1 To nocols
        ws.Cells(i, j).Activate
        ws.Cells(i, j).Formula = "=Rand()"
    Next j
Next i

Application.ScreenUpdate = True
End Sub

Open in new window

In your Excel file you can have the graph set up to use the random range.
If you want we can write a separate macro (or append the above) to create the line graph
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Assisted Solution

by:Kimputer
Kimputer earned 400 total points (awarded by participants)
ID: 41780019
Above code obviously works, but please note the following:

- Excel usually only allows 255 lines, not the 500 you want
- Displaying random numbers, (graph/line/bars or otherwise) is usually of NO USE. IT will be ONE BIG BLOCK OF BLACK DOTS (if not, the random generator is defect). Or in Excel, it's grey, since all the colors fade into each other (lines visiable for around 15 lines, above 50, it's getting like a full block of grey).
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LVL 18

Expert Comment

by:xtermie
ID: 41808387
Good comments, code and recommendations provided
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