Category Archives: Arrays

py_RC Design with 3D Cache

Posted on 12/07/2026 by dougaj4

Following my recent post on passing 3D arrays from Python to Excel I have now added a py_UmomC function to the py_RC Design spreadsheet. The new spreadsheet and Python code, along with related code, can be downloaded from: py_RC Design.zip … Continue reading →

Posted in Arrays, Beam Bending, Concrete, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , , , , , , | 2 Comments

Passing 3D arrays to Excel with Python and pyxll

Posted on 18/06/2026 by dougaj4

The previous post looked at options for displaying 1D or 2D arrays in Excel. This post will look at passing 3D arrays from Python to Excel as a cache object, using pyxll, and how to extract selected data from the … Continue reading →

Posted in Arrays, Excel, Link to Python, Newton, PyXLL, UDFs | Tagged , , , , , | 1 Comment

Dynamic array update and the @ operator

Posted on 11/06/2026 by dougaj4

Many of the user defined functions (UDF’s) presented in this blog return an array rather than a single value. Options for displaying arrays in Excel have changed significantly in recent years and this post looks at the most efficient ways … Continue reading →

Posted in Arrays, Excel, Link to Python, PyXLL, UDFs, VBA | Tagged , , , , , , , , | 1 Comment

Scipy-statistics with all distributions

Posted on 17/05/2026 by dougaj4

Following the previous post the Scipy statistics functions have been updated to include all the distributions, including the discrete distributions. The input to the distribution functions has also been updated to allow arrays to be transferred either as Excel ranges … Continue reading →

Posted in Arrays, Excel, Link to Python, Maths, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , , , , , , , | Leave a comment

Transferring different data types to/from Python with pyxll

Posted on 12/05/2026 by dougaj4

When a user defined function (UDF) is created in Excel with Python and pyxll the data type of each argument can be specified, either in the @xl_func decorator, or with a separate @xl_arg decorator for each argument. I prefer the … Continue reading →

Posted in Arrays, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , , , , , | 1 Comment