GraphDraw

GraphDraw allows the entry, and editing, of x,y values, and the data may then be fit to

• best straight line
• best parabola
• cubic spline curve
• polynomial of order up to six.

The resulting graph may be printed via any standard RISC OS printer driver, saved as a draw file, or exported as a MultiPlot file to allow several graphs to be combined.

Version 3.00, released on 25th Aug 2015 is a completely new release, with GraphDraw having been totally rewritten from scratch and coded in C rather than Basic. Most of the features of the previous version have been retained. The biggest change is that you can now have several data sets active at the same time, and data set sizes are fully dynamic, so there is no restriction on the size of dataset that can be used.

The latest release is version 3.03, 8th May 2019

GraphDraw is 26/32-bit neutral and should run on RISC OS 4, 5 and 6. It has been tested successfully on the BeagleBoard, PandaBoard, iMX6, and IGEPv5, all running RISC OS 5.23. It should also run on RISC OS 3, but will require suitable toolbox modules and SharedCLib to be present.

Downloads

• The complete GraphDraw application, version 3.03 (file size 856KB) (8th May 2019)

Changes in version 3.03

• Adjust click on iconbar icon opens Choices dbox
• Added custom graph size option to Choices and Graph layout
• All unclaimed hot keys now correctly passed on
• Added option to allow setting of graph axis range manually
• Fix: null pointer dereference
• Fix: MultiPlot export sometimes used incorrect data pointer when multiple datasets were in use
• Fix: Undo transform did not reset all flags so sometimes plotted previous values
• Added option to auto-open graph windows when fit is performed
• Added more warning messages for invalid values in least fits involving semilog or log-log plots
• Added colour options for graph axes, text, etc
• Added y text horizontal option in graph annotation
• Fix: outline fonts now correctly reset on mode change involving change in dpi values (90 and 180 dpi)