Category Archives: UDFs

Python Matrix Functions with ExcelPython – 2

Posted on 28/05/2014 by dougaj4

Following the previous ExcelPython post I have modified the VBA and Python code for improved performance and to simplify the Python coding.  The main change is that where Numpy Arrays are required in the Python code, these are now created … Continue reading →

Posted in Arrays, Excel, Link to Python, Maths, NumPy and SciPy, UDFs, VBA | Tagged , , , , , , | 14 Comments

Linking to Python with Excel-Python, and Python matrix functions

Posted on 22/05/2014 by dougaj4

I have been experimenting for a few weeks with a new package linking Excel to Python, by the name of ExcelPython.  Here is what the author says about it: “ExcelPython is a lightweight, easily distributable library for interfacing Excel and … Continue reading →

Posted in Arrays, Excel, Finite Element Analysis, Frame Analysis, Link to Python, Maths, Newton, NumPy and SciPy, UDFs, VBA | Tagged , , , , , , , , | 5 Comments

Dividing shapes into layers

Posted on 10/05/2014 by dougaj4

For reasons that will become apparent in a later post, I need to rotate irregular polygons, defined by the coordinates of each corner, by a specified angle, and then split the resulting shape into horizontal trapezoidal layers. I have written … Continue reading →

Posted in Coordinate Geometry, Excel, Maths, UDFs, VBA | Tagged , , , , , | 8 Comments

More Sort Functions

Posted on 23/04/2014 by dougaj4

I have recently added three new sorting User Defined Functions (UDFs) to the SortFunc-py spreadsheet, and added a new option to the SortV function.  The new file may be downloaded from SortFunc.zip, including full open source code. The first new function … Continue reading →

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

ConBeamU Update

Posted on 17/04/2014 by dougaj4

Recently a comment pointed out that if the ConBeam, or ConBeamU, user defined functions were used with a single span then the “Out” argument was ignored, so it was not possible to return support reactions.  This has now been fixed … Continue reading →

Posted in Beam Bending, Excel, Frame Analysis, Newton, UDFs, VBA | Tagged , , , | 18 Comments