Excel VBA for physicists a primer by Bernard V. Liengme

By Bernard V. Liengme

This ebook is either creation and demonstration of the way visible easy for purposes (VBA) can drastically improve Microsoft Excel by way of giving clients the facility to create their very own services inside of a worksheet and to create subroutines to accomplish repetitive activities. The e-book is written so readers are inspired to test with VBA programming with examples utilizing relatively basic physics or non-complicated arithmetic similar to root discovering and numerical integration. confirmed Excel workbooks can be found for every bankruptcy and there's not anything to shop for or install.

Visual easy (VB, the father or mother of VBA) has developed to turn into a high-powered object-orientated language that's now not denigrated by means of aficionados of language comparable to C++ and C#. The textual content is acceptable not only for physicists yet for different scientists and engineers, together with scholars.

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This is called a sequential structure. Anything that changes this flow is called a control structure. A branching structure gives the program two or more alternative paths to follow depending on the value of a variable. A repetition or looping structure causes code within a loop to be executed one or more times. 1 Branching structures (If and Select Case) Branching structures present the program with various paths to follow depending on the value of one or more variables. VBA has three branching structures: GoTo, If…Else, and Select Case.

Min(Range(“A1:E1”)) will return the result of applying the Excel function Min to the range A1:E1. xlsm active, the reader might wish to experiment with this code (adding a ? before Application). It is not essential to use both Application and WorksheetFunction; one will suffice. There are advantages and disadvantages to both. 2. However, when both or just Application is used then error checking works. Here are two functions; clearly when x > 3 the Match fails so an error occurs. The function TestF1 does not trap the error and the cell calling it displays #VALUE!.

Row, “D”) + 1 End Sub We will accept the header and its ByVal phrase without comment. The first statement checks that the cell that has been changed lies within the range of interest; if not the sub is exited. The next If…End If block ensures that the user has not changed more than one cell (for example, he/she could have selected and deleted several cells). We cannot handle multiple changes so a message is thrown up and the action is undone. Now this undoing will itself trigger the Worksheet_Change sub and we could have recursion.

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