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 2.70 Latest release - 20th May 2006 Graphdraw is undergoing a major rewrite. The first stage of this process has been completed. The wimp interface is now entirely Toolbox based, and this version requires the latest versions of the RISC OS Toolbox modules. If you do not have them they can be downloaded from Castle or from RISCOS Ltd. An earlier non-toolbox version (2.57) is still available, see below. New features A range of new features have been introduced since version 2.59 was released. These include User definable colours Configurable page format More graph display options can be saved Non-linear least squares methods added Semilog X Semilog Y Log X/Log Y GraphDraw is 26/32-bit neutral and runs on RISC OS Select and on RISC OS 5 on the Iyonix. You may download version 2.70 as a zip archive. The GraphDraw application, version 2.70 release (file size 2.5M) (New 20th May 2006) Note the large size of this download - due to the inclusion of the new HTML based manual within the application (as per Castle Technology's guideline). Future upgrades will be smaller, containing just the files that have changed. Changes in this release Fix to allow use on a9Home with RISC OS 4.42 Now possible to ignore rogue points in curve fitting procedures, while still displaying them on the graph You may view a complete summary of all the changes since version 2.59. Please let me know of any problems. Beta testers GraphDraw is under continuous development. If you would like to be added to the list of beta testers then mail me at chrisjohnson+web@spamcop.net and I will include you. Version 2.57 (29 Oct 2000) This version remains available for those who do not wish to use the toolbox version - e.g. for those using older RISC OS 3.1 machines with limited memory. GraphDraw version 2.57 is 26-bit only. You may download the following files, which are all zip archives. The GraphDraw application (file size 99k) The manual in Impression format (file size 17k) The manual in Ovation Pro format (file size 14k)

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