### Categories

### RSS Feed

### Search NewtonExcelBach

### Archives

### Top Posts

- Commenting a block of code in VBA
- Using Goal Seek on Multiple Cells
- Automating chart scale limits
- Cubic Splines
- The angle between two vectors, Python version
- Weighted Least Squares Regression, using Excel, VBA, Alglib and Python
- Using LINEST for non-linear curve fitting
- Solving Quadratic, Cubic, Quartic and higher order equations; examples
- Microsoft Python Resources
- Brent's Method; Update and Examples

### Recent Comments

Brian Dolan on LatPilePY 1.04 dougaj4 on LatPilePY 1.04 Brian Dolan on LatPilePY 1.04 Asymmetric Catenary… on Using Excel Solver from V… Asymmetric Catenary… on A catenary function OliviaHoros on Commenting a block of code in… Column buckling unde… on Using Frame4Buckle with the Al… Column buckling unde… on Buckling of columns with varyi… dougaj4 on Biaxial bending update DonB on Biaxial bending update dougaj4 on Biaxial bending update DonB on Biaxial bending update DonB on Biaxial bending update Perko on Installing Adobe Reader non-DC… Python Traps | Newto… on The meaning of = in Pytho…

# Tag Archives: Excel

## Asymmetric Catenary Function

Back in 2009, I posted a user defined function (UDF) to generate a catenary curve, that could be used together with the Excel Solver to generate a curve of a specified span and sag: A catenary function Following a discussion … Continue reading

Posted in Coordinate Geometry, Curve fitting, Excel, Maths, Newton, UDFs, xlwings
Tagged Catenary, Excel, Solver, UDF, VBA
Leave a comment

## Using Excel Solver from VBA

Using the “record macro” icon in Excel to record the solver process, I had a couple of problems: When I tried to run the recorded macro, I got the message “Compile Error – Sub or Function not defined”. When that … Continue reading

## Column buckling under multiple loads

Following another buckling discussion at Eng-tips I have modified my Frame4-buckle spreadsheet to allow input of multiple axial loads at any point along the column, along with any number of sections with different section properties. Background on the method used … Continue reading

Posted in AlgLib, Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Newton, UDFs, VBA
Tagged AlgLib, column buckling, Euler buckling, Excel, Frame Analysis, multiple load buckling, stepped column, tapered column, VBA, Vianello
Leave a comment

## Python Traps

When converting existing VBA code to Python there are a number of obvious changes to the syntax that need to be made for the code to run at all, but there are also a number of not so obvious traps … Continue reading

Posted in Arrays, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs, VBA
Tagged Excel, for loop counters |, Numpy, Passing variables, Python, python traps, PyXLL, UDF, VBA
Leave a comment

## Excel Dynamic Arrays

Previews of dynamic arrays in Excel have been available for some time through the “Insider” programme. They are now being published to general subscribers through Office 365 monthly updates: Further information is given at: Easier array formulas and Dynamic array … Continue reading

Posted in Arrays, Excel, UDFs
Tagged array functions, CSE array functions, dynamic arrays, Excel, UDFs, VBA
Leave a comment

## Biaxial bending update

The reinforced concrete biaxial bending spreadsheet has now been updated: Stress block and capacity reduction factors updated for AS 3600-2018 ACI factors for US customary units used when stress is entered in ksi or psi units Example data updated The … Continue reading

Posted in Beam Bending, Concrete, Newton
Tagged ACI 318, AS 3600, biaxial bending, Eurocode 2, Excel, Reinforced Concrete, UDFs, ULS Design Functions, VBA
8 Comments

## More powers of 3

Following the discovery of a question to which the answer is 42, the same team has now reported a sum of three cubes equal to 3. As before, the result can be checked from Excel, linking to mpmath, via pyxll. … Continue reading

Posted in Computing - general, Excel, Link to Python, Maths, Newton, PyXLL
Tagged 42, Excel, Life the Universe and Everything, mpmath, PyXLL, sum of 3 cubes
Leave a comment