Recent Comments
Category Archives: Coordinate Geometry
Arc-spline update
The input for the first version of the Arcspline function required the coordinates of the centre of each arc, as well as the angle of the tangents at each end of the arc. I have now added a new version with … Continue reading
Posted in Coordinate Geometry, Excel, Maths, Newton, UDFs, VBA
Tagged Arc-spline function, Excel, IP2.xlsb, UDFs, VBA
7 Comments
Using VBA Evaluate as an Array Function
I recently discovered from a thread at Chandoo’s Excel Forum that the VBA Evaluate function can be used as an array function. As a simple example: Range(“A11:A16”).Value = Evaluate(“= B11:B16 + C11:C16”) will add the values in columns B and C, … Continue reading
Posted in Arrays, Coordinate Geometry, Excel, Maths, UDFs, VBA
Tagged array functions, Evaluate, Excel, UDFs, VBA
2 Comments
Arcs and arc-splines
I have added two user defined functions (UDFs) to the IP2 spreadsheet to generate coordinates for a single arc, or a series of arcs connected (if necessary) by straight lines. The new version may be downloaded from: IP2.zip As an example … Continue reading
Using Section Properties- Group
Following a recent comment I have updated the documentation for finding the section properties of groups of shapes in the Section-Properties-Group spreadsheet. The revised file can be downloaded from: Section Properties07-Group.zip The screenshots below illustrate use of the Group function to … Continue reading
IP2_py Update for Python3
The spreadsheet IP2_py provides a large number of geometric functions, including intersection points of lines, circles and planes, interpolation, rotations, and converting between coordinate systems. Many of the functions are available in VBA and Python versions. The Python code has now … Continue reading
Newton Excel Bach, not (just) an Excel Blog 