Tag Archives: DigitGraph

DigitGraph Spreadsheet and WebPlot Digitiser

Posted on March 3, 2020 by dougaj4

I have posted here previously a spreadsheet that allows XY data to be extracted from images of graphs, maps or other images of objects in a single plane: How to digitise a scanned image. I have updated the instructions for the … Continue reading →

Posted in Charts, Charts, Computing - general, Curve fitting, Drawing, Excel, UDFs, VBA | Tagged , , , , , | 5 Comments

Daily Download 10: Excel Digitiser

Posted on September 26, 2012 by dougaj4

See How to digitise a scanned image and Digitising logarithmic scales.  This spreadsheet provides a function to retrieve coordinates of lines traced over a scanned image. Download from: http://interactiveds.com.au/software/DigitGraph.zip Example images:

Posted in Drawing, Excel, Newton, UDFs, VBA | Tagged , , , , | Leave a comment

The Dome of Santa Maria del Fiore – Dimensions

Posted on June 30, 2012 by dougaj4

This post is a continuation from The Dome of Santa Maria del Fiore in Florence Different sources give a wide variety of different dimensions for the dome, but there seems to be reasonable agreement that the “across flats” diameter of the … Continue reading →

Posted in Dome Structures, Excel, Finite Element Analysis, Newton, Strand7, UDFs, VBA | Tagged , , , , , , , , | 2 Comments