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- Time in hours and minutes between two dates
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- Weighted Least Squares Regression, using Excel, VBA, Alglib and Python
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Tag Archives: Python
More on combined shear and bending design to AS 3600
Further to the last post on this subject I have been looking at procedures to speed up design for shear to AS 3600 when the “refined” analysis procedure is used. The issues that need to be addressed are: I have … Continue reading
Posted in Beam Bending, Concrete, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs
Tagged Brents method, Combined shear and bending, Excel, Longitudinal shear force, Python, PyXLL, SciPy, shear capacity, UDFs
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Latex Maths Text in Excel
There have been many posts here looking at alternative ways of working with functions entered as text on a spreadsheet, and working with units, most recently here. One drawback with this approach is that text in an Excel cell must … Continue reading
Posted in Excel, Link to Python, Maths, Newton, NumPy and SciPy, PyXLL, UDFs
Tagged EvalU, Excel, Latex, Math Text, mpmath, Pint, Python, PyXLL, Sympy, UDFs, Unit-aware calculation
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Linking to Python help from Excel
The py_Numpy spreadsheet presented in the previous post has been updated: The new version can be downloaded from: py_Numpy.zip As before, the pyxll add-in is required for the connection from Excel to Python. All the available functions are listed on … Continue reading
Posted in Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs
Tagged Display Python help, Excel, Link to Python on-line help, Numpy, Python, PyXLL, UDFs
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Working with Python polynomials from Excel
Python polynomial functions have several features that require manipulation of data passed from Excel: I have written 3 short Python functions to deal with passing arrays of complex numbers from and to Excel, using pyxll, or within Python code to … Continue reading
Posted in Arrays, Excel, Link to Python, PyXLL, UDFs
Tagged complex numbers, Complex to real, Excel, Numpy, Polynomials, Python, PyXLL, Real to complex, Reversing arrays, UDFs
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3D plots with the latest Matplotlib
Installing Python on a new computer, I found I had to downgrade Matplotlib to release 3.5.2 to get my 3D plotting functions to work. Further investigation found that the problem was the Axes3D function. Changing: ax = axes3d.Axes3D(fig)to: … Continue reading
Posted in Animation, Coordinate Geometry, Drawing, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs
Tagged Excel, MatPlotlib, Plot 3D images, Python, PyXLL, Rotate 3D images, UDFs
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