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Tag Archives: VBA
Working with dynamic arrays in Excel
Many of the VBA functions available here return results as arrays, which must be entered by selecting the desired output range, then pressing Ctrl-Shift-Enter (CSE). This can be inconvenient (or at least untidy) when the size of the output array varies. … Continue reading
Posted in Arrays, Excel, UDFs, VBA
Tagged Charles Williams, dynamic arrays, Excel, Fast Excel, VBA, Wndows Insider
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RC Design Functions 8_03
The RC Design Functions 8_03 spreadsheet is now available for free download from: RC Design Functions8.zip The main changes are: The NA layer check has been corrected for compression steel in tension The new AS 3600 crack width and curvature … Continue reading
Posted in Beam Bending, Concrete, Excel, Newton, UDFs, VBA
Tagged AS 3600, crack width, Curvature, Excel, RC Design Functions, Reinforced Concrete, UDF, VBA
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Numerical Integration; Tanh-Sinh Quadrature v. 4.42
Back to Newton and Excel. I recently received a new update to the Tanh-Sinh Quadrature spreadsheet from Graeme Dennes, which may be downloaded from: Tanh_Sinh Quadrature. From the Readme: The Tanh-Sinh quadrature workbook has been enhanced as follows: The Tanh-Sinh … Continue reading
Posted in Charts, Excel, Maths, Newton, Numerical integration, UDFs, VBA
Tagged Double Exponential, Excel, Gauss-Kronrod, numerical integration, Romberg, Tanh-Sinh method, Tanh-Sinh Quadrature, UDF, VBA
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mpmath for Excel
mpmath has been mentioned in passing here before, but not in any detail. The mpmath site says: mpmath is a free (BSD licensed) Python library for real and complex floating-point arithmetic with arbitrary precision. It has been developed by Fredrik … Continue reading
Posted in Excel, Link to Python, Maths, PyXLL, UDFs, VBA, xlwings
Tagged evaluate pi, Excel, high precision maths, mpmath, Python, PyXLL, UDFs, VBA, xlwings
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Transferring large arrays with Pyxll
Pyxll is a commercial Excel add-in linking Excel and Python. The latest version offers greatly improved performance in transferring data between Excel and Python as Numpy arrays, amongst many other new features and improvements. To check what this means in practice, … Continue reading
Posted in Arrays, Excel, Frame Analysis, Link to Python, PyXLL, UDFs, VBA
Tagged data transfer time, Excel, large arrays, Python, PyXLL, UDFs, VBA
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More updates to ArcSpline and IP2
I have uploaded version 2.18 of the IP2 spreadsheet to: IP2.zip The new version includes updates to the IP, IP_4, and ArcSpline functions, as described below. The download is free and includes full open-source code. The IP and IP_4 functions find … Continue reading
Posted in Arrays, Coordinate Geometry, Excel, Maths, Newton, UDFs, VBA
Tagged arcspline, Array function entry, Automatic re-size array functions, Excel, IP2.xlsb, Line intersections, UDFs, VBA
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More SciPy Solvers
The xlwings Scipy spreadsheet has been updated with a new example of the xl_SolveF function, that uses the Scipy Optimize root function. The new spreadsheet can be downloaded from: xlScipy3.zip The new example uses a python function ic_calc (included in the … Continue reading
Posted in Excel, Link to Python, Newton, NumPy and SciPy, UDFs, VBA, xlwings
Tagged bolt group, Excel, Python, SciPy, solvers, UDFs, VBA, xlwings
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