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Tag Archives: Python
VBA vs Power Query vs Python
A recent post at Chandoo’s Excel Forum asked for a formula to extract all pairs of digits from a number with 4 digits. This was soon extended to dealing with longer numbers, and the examples looked at here will work with … Continue reading
Posted in Arrays, Excel, Link to Python, UDFs, VBA, xlwings
Tagged Chandoo, Excel, itertools, Power Query, Python, UDF, VBA, xlwings
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Units and solvers with Pint and Sympy
Following the previous post I have adapted the units code to use the Pint package, and added a function using the Sympy equation solver, with Pint units. I have applied the functions to finding the depth of neutral axis of a … Continue reading
Posted in Beam Bending, Concrete, Excel, Link to Python, Maths, Newton, UDFs, VBA, xlwings
Tagged Evaluate text, evaluate units, Excel, Pint, Python, Solve text, Sympy, UDF, unit aware, Units, VBA, xlwings
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Working with units in Excel – using VBA and Python
One of the most frequent reasons given for not using Excel for engineering and scientific applications is its very limited facilities for dealing with calculations involving units. It is possible to overcome this deficiency with VBA (see Daily Download 24: … Continue reading
Posted in Excel, Link to Python, Maths, Newton, NumPy and SciPy, UDFs, VBA, xlwings
Tagged evaluate text strings, Excel, Python, Sympy, UDFs, Unyt, VBA, xlwings
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Scipy Statistics Functions – coding and getting help
The Python Scipy library currently has 84 statistics functions. I have now updated the xlwSciPy3 spreadsheet to access all of them directly from Excel. The new version can be downloaded from: xlwSciPy3.zip As usual, the download includes full open-source code. … Continue reading
Posted in Excel, Link to Python, Maths, Newton, NumPy and SciPy, UDFs, VBA, xlwings
Tagged Excel, link to Python docs, Python, SciPy, Scipy stats, UDFs, VBA, xlwings
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Passing variable argument lists from Excel to Python via xlwings
When calling a Python function it is sometimes necessary to pass a variable number of arguments. Examples from the xlw_Scipy spreadsheet include: Curve fitting functions, for which the functions to be fitted may have any number of arguments. The Scipy … Continue reading
Posted in Arrays, Excel, Link to Python, NumPy and SciPy, UDFs, VBA, xlwings
Tagged dictionaries, Excel, ParamArray, Passing arrays, Passing named arguments, Python, UDFs, VBA, xlwings
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Returning Arrays From VBA and Python
Most of the user defined functions (UDFs) presented on this blog return a multi-cell array, that must be entered by selecting the output range then pressing Ctrl-shift-enter to display all the results. This process has several inconveniencies: You need to know … Continue reading
Posted in Arrays, Excel, Link to Python, UDFs, VBA, xlwings
Tagged dynamic arrays, Excel, Python, resizing array functions, UDFs, using array functions, VBA, xlwings
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More Numpy with Excel and xlwings
The spreadsheet presented in the last post on sorting also includes links to many other Numpy functions. The spreadsheet and associated Python file can be downloaded from: xlNumpy.zip The Numpy functions require xlwings and Numpy to be installed, which are included in … Continue reading
Posted in Arrays, Excel, Link to Python, Maths, Newton, NumPy and SciPy, UDFs, VBA, xlwings
Tagged Anaconda, Excel, math functions, Numerical ranges, Numpy, Polynomial functions, Python, Trig functions, UDF, VBA, xlwings
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