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 2.68 Latest release - 8th December 2004 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 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 2.68 as a zip archive. The GraphDraw application, version 2.68 release (file size 2.5M) (New 8th December 2004) 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 Implemented HTML Help within the application as per Castle's guidelines Point (symbol) size, in points is now the diameter, and not the radius as previously, to be consistent with other sizes such as axis tick Changed axis pip length units to points Bugfix: Clicking on 'plot points' or 'plot line' immediately after a log plot had been done was not resetting the log axes to linear axes correctly Bugfix: If any log plot was attempted with invalid data - GraphDraw crashed if the graph window was already open and a redraw was required when the alert box was closed Bug fix: Plotting polynomial fit immediately after parabolic fit no longer crashes (typo in source caused an array to be written to beyond it's storage area) Bug fix: Choices now saves printer details as intended 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@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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