Category Archives: Maths

ExcelPython2, Alglib and Spline-Matrix Rel 2.03

Posted on 06/10/2014 by dougaj4

Following a comment here: ExcelPython2, Alglib and Spline-Matrix update I have updated the VBA and Python code, and added a missing Python module to the download zip file.  See the earlier post for details of installation and use, or download the revised files … Continue reading →

Posted in AlgLib, Excel, Link to Python, Maths, Newton, Numerical integration, NumPy and SciPy, UDFs, VBA | Tagged , , , , , , | Leave a comment

Run Fortran from Excel with Python and F2Py

Posted on 15/09/2014 by dougaj4

I have previously posted on the use of the Silverfrost Fortran compiler with Excel (e.g. Linking Excel to Fortran).  More recently I have been concentrating on accessing high performance compiled routines via Python and the Python maths and science libraries … Continue reading →

Posted in Excel, Finite Element Analysis, Fortran, Frame Analysis, Link to Python, Maths, Newton | Tagged , , , , , , , , | 6 Comments

ExcelPython2, Alglib and Spline-Matrix update

Posted on 12/09/2014 by dougaj4

The ExcelPython add-in, offering easy access to Python code from Excel VBA, has had a major update to Release 2.  The new version provides new features and simpler installation, but has some incompatibilities with code written for the previous  version, so the … Continue reading →

Posted in AlgLib, Excel, Link to Python, Maths, Newton, UDFs, VBA | Tagged , , , , , , , , | 4 Comments

Extending complex UDFs with simple VBA

Posted on 05/09/2014 by dougaj4

One of the advantages of writing spreadsheet applications in the form of User Defined Functions (UDFs) is that the UDF may be used on the spreadsheet in the same way as a built-in function, allowing applications to be modified and extended … Continue reading →

Posted in Excel, Maths, Newton, UDFs, VBA | 3 Comments

Using the VBA ParamArray keyword

Posted on 30/08/2014 by dougaj4

The recently posted SolvePoly function makes use of the VBA ParamArray keyword, which allows an arbitrarily long list of arguments to be passed to another function.  I have not made great use of this in the past, but since the … Continue reading →

Posted in Excel, Maths, Newton, UDFs, VBA | Leave a comment