Category Archives: UDFs

Hello World (again)

Over at Daily Dose of Excel Dick has been asking for suggestions for excellent training, to which Jan Karel Pietersen replied that training should be relevant to the task at hand, and that “hello world” examples are useless. John Walkenbach responded … Continue reading

Posted in Excel, Maths, UDFs, VBA | Tagged , , , , | 2 Comments

Good practice, best practice, or just practice?

Browsing the ‘net this morning I found the “Golden Rules” listed below at Ozgrid.com The rules are described as things that “should not be optional”, which seemed to me in some cases to be going way too far, since for many … Continue reading

Posted in Excel, UDFs, VBA | Tagged , , | 15 Comments

Perfect Anniversaries

The young author of  The Math Less Travelled has just celebrated his 28 birthday, noting that 28 is a perfect number.  He laments that since the next perfect number is 496, it is most unlikely that he will see another perfect … Continue reading

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Distributing Silverfrost Fortran Applications

Earlier posts have included User Defined Functions (UDFs) linked to Fortran dll files compiled with Silverfrost Personal Fortran: Solving simultaneous equations – Fortran dll Trigonometric Functions – dll Linking Excel to Fortran – 2 Transferring these files to a new computer it came to my … Continue reading

Posted in Excel, Link to dll, UDFs, VBA | Tagged , , , , , | 2 Comments

Cubic Spline Update

The previous post in this series presented a User Defined Function (UDF) to fit  a cubic spline to a series of points defined by XY coordinates.  Each segment of the resulting spline is defined by a separate cubic curve, which may be … Continue reading

Posted in Coordinate Geometry, Excel, Maths, Newton, UDFs, VBA | Tagged , , , , | 1 Comment