### Categories

### RSS Feed

### Search NewtonExcelBach

### Archives

### Top Posts

- Commenting a block of code in VBA
- Using Goal Seek on Multiple Cells
- Solving Quadratic, Cubic, Quartic and higher order equations; examples
- The angle between two vectors, Python version
- Combining arrays
- Brent's Method; Update and Examples
- Section properties for groups of defined shapes
- 64 bit Excel and PtrSafe
- Weighted Least Squares Regression, using Excel, VBA, Alglib and Python
- Using LINEST for non-linear curve fitting

### Recent Comments

Mohd Yousef on Biaxial bending update dougaj4 on Beam Fixed End Actions by Maca… Peka Odendaal (@PKOd… on Beam Fixed End Actions by Maca… Gerardo Freyre on The history of the theory of b… dougaj4 on Time in hours and minutes betw… SDAmy on Time in hours and minutes betw… Concrete Stress Bloc… on Equivalent Stress Blocks Concrete Stress Bloc… on Stress blocks in AS 3600 Section Properties f… on Using Section Properties-… dougaj4 on ULS Design Functions and … dougaj4 on ULS Design Functions and … dougaj4 on Using LinEst() on data with… Eduardo Torres on Using LinEst() on data with… DonB on ULS Design Functions and … DonB on ULS Design Functions and …

# Category Archives: NumPy and SciPy

## More Python Traps

I recently posted on some Python Traps, focussing on code where changes in the values of sub-routine arguments were not reflected in the calling routines. The reverse can also be a problem: if an array, a, is passed to a … Continue reading

Posted in Arrays, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs
Tagged Numpy, Passing variables, Python, python traps, PyXLL, UDF
Leave a comment

## Python Traps

When converting existing VBA code to Python there are a number of obvious changes to the syntax that need to be made for the code to run at all, but there are also a number of not so obvious traps … Continue reading

Posted in Arrays, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs, VBA
Tagged Excel, for loop counters |, Numpy, Passing variables, Python, python traps, PyXLL, UDF, VBA
1 Comment

## Multiple Integration with Scipy

Scipy has 3 functions for multiple numerical integration in the scipy.integrate module: dblquad: Compute a double integral. tplquad: Compute a triple integral’ nquad: Integration over multiple variables. I have written six functions to call these functions from Excel, via Pyxll: Each … Continue reading

Posted in Excel, Link to Python, Maths, Newton, Numerical integration, NumPy and SciPy, PyXLL, UDFs
Tagged Excel, multiple integration, Python, PyXLL, SciPy, UDFs
6 Comments

## 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
Leave a comment

## Python Problems

I have recently returned to using Pyxll to link Excel to Python (of which more later), which required the installation of a 32 bit version of Python 3.7. First trials after installation returned the message: “AttributeError: ‘module’ object has no … Continue reading

Posted in Computing - general, Link to Python, NumPy and SciPy
Tagged CLSIDToPackageMap, installation, Python, py_gen
Leave a comment