Forum Discussion

Brass Contributor

Aug 30, 2021

Solved

Bootstrap

Hello, I don't know why if I type in any cell in an excel sheet that has bootstrap statistics analysis, it resamples again. Please see attached sheet. Thanks, Sam

Bootstrap_tut_example.xls189 KB

excel

HansVogelaar

Aug 31, 2021

SamFares

Try this:

Sub Resample()
    Dim NumSamples As Long
    Dim LastRow As Long
    NumSamples = Val(InputBox("How many samples do you need (31 - 500)?"))
    If NumSamples < 31 Or NumSamples > 500 Then
        MsgBox "Invalid input. Must be between 31 and 500!", vbExclamation
        Exit Sub
    End If
    Application.ScreenUpdating = False
    LastRow = Range("A" & Rows.Count).End(xlUp).Row
    Range("AG26:SH" & LastRow).ClearContents
    With Range(Cells(26, 33), Cells(LastRow, NumSamples + 2))
        .FormulaR1C1 = "=INDEX(RC3:RC32,RANDBETWEEN(1,30))"
        .Value = .Value
    End With
    Application.ScreenUpdating = True
End Sub

HansVogelaar

MVP

Aug 31, 2021

SamFares

You've totally lost me. Your PDF shows 6025 rows but Bootstrap #2 has only 3 rows.

Can you explain in tiny detail, step by step, what you want?

SamFares

Brass Contributor

Aug 31, 2021

Hans,
I am attaching the actual Excel Sheet that shows 30 gas releases data. Each release is an experiment on its own. The gas concentrations in the air is a measured with a device and it reads it at different relative times which is shown in A26-A6025. At each relative time you will see the measurements for each relative time. In this experiment 30 samples per relative time is not enough. i need to generate resamples for each row(relative time) for up to 500. I am not sure if you can have the VBA code ask the question how many resamples i need so i can type the number<=500. if i decide to change the numbers of resamples, have it delete the existing and regenerate new resamples based on the new resampling number. this is sheet has the data from lab experiment.
it starts from A26:AF26 and up to row 6025.
Thanks a lot!
Sam