Categories
RSS Feed
Search NewtonExcelBach
Archives
Top Posts
- Time in hours and minutes between two dates
- Using LINEST for non-linear curve fitting
- Cubic Splines
- Latex Maths Text in Excel
- Commenting a block of code in VBA
- Removing Add-ins
- Using Linest for non-linear curve fitting, examples, hints and warnings
- Solving cubic and quartic equations with Excel
- Solving Quadratic, Cubic, Quartic and higher order equations; examples
- Retrieving unique values from a range or array ...
Recent Comments
Tag Archives: Numpy
py_Numpy update and using Numba
The py_Numpy spreadsheet presented at Calling Numpy polynomial functions from Excel has had a minor upgrade to the py_Polyfit function, which was previously returning an error message if the optional “full” argument was set to False. The new version can be … Continue reading
Posted in Curve fitting, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs
Tagged Excel, Numba, Numpy, PyXLL, py_Numpy, py_Polyfit, UDFs
Leave a comment
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
Leave a comment
Calling Numpy polynomial functions from Excel
The Numpy polynomial related function discussed in recent posts can now be downloaded from: py_Numpy.zip The download file includes Python code and a sample spreadsheet. Required installed software is Python, Numba and pyxll to call the code from Excel. Some … Continue reading
Posted in Curve fitting, Excel, Link to Python, Maths, NumPy and SciPy, PyXLL, UDFs
Tagged Excel, Link to Python, Numpy, PyXLL, UDFs
1 Comment
Solving cubic equations – background and timing
For more information on the polynomial functions, including quartic and higher order solvers, see: Solving Quadratic, Cubic, Quartic and higher order equations; examples Re-reading the Wikipedia article on solving cubic equations, I noticed that the trigonometrical solution for finding 3 real … Continue reading
Posted in Excel, Link to Python, Maths, Newton, NumPy and SciPy, PyXLL, UDFs, VBA
Tagged cubic equations, Excel, Numba, Numpy, Polynomials, Pyhon, PyXLL, Quartic equations, UDFs, VBA
Leave a comment
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
Leave a comment