Tag Archives: SciPy

Non-linear Frame Analysis – Scipy solvers

Posted on 11/09/2016 by dougaj4

The frame analysis spreadsheet presented in the previous post has been updated to use the solvers included in the Scipy package.  There is now an option to use either the Cholesky solver, or an iterative sparse solver.  The main advantages of … Continue reading →

Posted in Arrays, Beam Bending, Excel, Finite Element Analysis, Fortran, Frame Analysis, Link to dll, Link to Python, Newton, NumPy and SciPy, Strand7, UDFs, VBA | Tagged , , , , , , , , , , , , , | 1 Comment

xlwSciPy 1.7

Posted on 17/04/2016 by dougaj4

Following recent posts on xlwings 0.7.1, dictionaries, and optional arguments and xlwings – dataframes and statistics, I have added the associated functions and examples to the xlwSciPy spreadsheet, and also updated it to xlwings 0.71. The new spreadsheet can be … Continue reading →

Posted in Excel, Link to Python, Maths, Newton, NumPy and SciPy, Python Pandas, UDFs, VBA | Tagged , , , , , , , , | 4 Comments

xlwings 0.7.1, dictionaries, and optional arguments

Posted on 08/04/2016 by dougaj4

xlwings 0.7.0 was published at the beginning of March, and introduced direct support for Python dictionaries, which I have used to demonstrate various options for dealing with optional arguments in Excel User Defined Functions (UDFs).  The latest version, 0.7.1, published … Continue reading →

Posted in Curve fitting, Excel, Link to Python, Maths, NumPy and SciPy, UDFs, VBA | Tagged , , , , , , , , | 1 Comment

Tanh-Sinh Quadrature via F2PY – Part 2

Posted on 01/02/2016 by dougaj4

Lets look at some details of the coding. The original code (available here) includes routines “intdeini” to generate an array of points and weights of the quadrature formula, and “intde” to carry out the integration of any supplied function “f”. … Continue reading →

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

Tanh-Sinh Quadrature via F2PY

Posted on 31/01/2016 by dougaj4

Fast and accurate numerical integration routines based on the Tanh-Sinh method are available as Excel VBA based functions in the Tanh_Sinh Quadrature spreadsheet by Graeme Dennes.  Graeme’s VBA code is based on open source Fortran code by Takuya Ooura, which … Continue reading →

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