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Category Archives: Arrays
Dots and Crosses
The comments from Bill Harvey in the previous post prompted me to have a closer look at the functions available in Excel for working with vectors. Here is a complete list of them: =SUMPRODUCT() (Equivalent to the vector dot product) This … Continue reading
Posted in Arrays, Coordinate Geometry, Excel, Maths, Newton, UDFs, VBA
Tagged cross product, dot product, Excel, UDF, VBA, vector area, vectors
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Using LatPilePY
LatPilePY is a User Defined Function (UDF) used to analyse the deflections and load actions in laterally loaded piles. It was presented in this post: LatPilePY. In response to an e-mail request, this post will give step by step instructions for … Continue reading
Posted in Arrays, Concrete, Excel, Geotechnical Engineering, Newton, UDFs, VBA
Tagged Array Function, COM624, Excel, Laterally loaded pile, Non-linear concrete, UDF, VBA
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Using LinEst() on data with gaps
A comment on Using LINEST for non-linear curve fitting asked if it was possible to use the function on data with gaps. There are several options: Copy and sort the data to remove the gaps. Use the chart trendline function Use … Continue reading
Using Array Formulas
Many of my User Defined Functions (UDFs) return an array of values, that requires a special procedure to make all the values visible. I have usually given a brief description of the procedure with the UDF, but for convenience for … Continue reading
Alternative IP and Rotations
In response to the 3D Intersections and PView Function posts Lori Miller has sent me two very elegant alternative ways of achieving similar results. The first is an on-spreadsheet solution to the intersection of two lines, using the LinEst function: Note … Continue reading
Posted in Arrays, Charts, Charts, Coordinate Geometry, Excel
Tagged defined names, Hypecube, IP, perspective projection
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Newton Excel Bach, not (just) an Excel Blog 