Recent Comments
Using LINEST for non… on LinEstGap with non-linear… 
dougaj4 on Using LinEst() on data with… LinEstGap with non-l… on Fitting high order polyno… LinEstGap with non-l… on Using LinEst() on data with… dougaj4 on Using LinEst() on data with… 
Charlene Van Wyngaar… on Using LinEst() on data with… dougaj4 on DigitGraph Spreadsheet and Web… 
dbwriting on DigitGraph Spreadsheet and Web… dougaj4 on Biaxial bending update dougaj4 on DigitGraph Spreadsheet and Web… 
Sergiu on Biaxial bending update 
Paul Halsema on DigitGraph Spreadsheet and Web… 
Patricio Galvan on DigitGraph Spreadsheet and Web… DigitGraph Spreadshe… on How to digitise a scanned… 
Brian Dolan on LatPilePY 1.04
Tag Archives: angle between two vectors
The angle between two vectors, Python version
I posted a VBA function to return The angle between two vectors, in 2D or 3D last year, and have just discovered that Python and Numpy are lacking this function. Since all the suggested code I found in a quick search used: Cos θ … Continue reading
Posted in Coordinate Geometry, Excel, Link to Python, Maths, Newton, NumPy and SciPy
Tagged angle between two vectors, Numpy, Python, PyXLL
10 Comments
The angle between two vectors, in 2D or 3D
Finding the angle between two lines in 2D is easy, just find the angle of each line with the x-axis from the slope of the line and take the difference. In 3D it is not so obvious, but it can … Continue reading
Posted in Coordinate Geometry, Excel, Maths, Newton, UDFs, VBA
Tagged 3D angle, angle between two vectors, cosine rule, Excel, UDF, VBA, vectors
9 Comments
