Oct. 18, 1995 v. 1.00 =========================================================================== + First release of CurveExpert 1.0. Oct. 26, 1995, v. 1.01 =========================================================================== New Features: + More attractive help file, with more keywords for searching + new help search facility available directly from CurveExpert Bug Fixes: + If a polynomial was already calculated, selecting another polynomial of a differing degree incorrectly pulled results from the cache instead of recalculating the curve fit. Fixed. + running two versions of CurveExpert is prevented, since two simultaneous instances cause stack faults. + if the data set is sorted, all interpolations are now marked invalid as they should be. + "Apply to All" did not necessarily force the current attributes of a graph to the current graph (only if the user clicks OK). Fixed. + The scrollbar did not get reset to the top when the user read in a new data file. Fixed. + The structure of the code has been undergone some major changes to ease porting to Windows 95 and Windows NT. I was exceedingly careful, but I hope this didn't introduce new bugs! :-) + For some reason, the help file didn't have any single or double quotes in it. This has been corrected, so it is now easier to read. + The help file was not terminated when CurveExpert was. Fixed. + The Window and Help menus were moved to more conventional positions on the menu bar. Nov. 4, 1995, v. 1.10: =========================================================================== New Features: + Previously undocumented logical functions can be used in the user-defined models. See the help documentation. + Current filename now appears in the title bar. + QuickCalc has been expanded to find the x-value, given the y-value. + Optimizations have been applied to many routines, making the user interface more responsive and the algorithms quicker. Changes: + File reading system has been revamped. + the color scheme on all windows now conforms strictly to the user defined system colors. + Dialogs were expunged of all Borland controls (except for buttons) since they conflicted with user defined color schemes. + The QuickCalc dialog now automatically shifts focus back to the edit control and selects all text after the OK button is pushed. This makes it easier to calculate many points at a time. Bug Fixes: + pressing the tab key to force the built-in spreadsheet sometimes added points onto the end of the data set. Fixed. + If a graph window was closed and then reopened (except after a CurveFinder operation), the comments in the Graph Info dialog were not correct. Fixed. + The Cut Last Row/Undo pair now functions properly. + The the graph of a polynomial fit would be reset if the data was changed in the data window. Fixed. + The scaling procedure did not grab the latest data out of the data window's edit control if it was active, resulting in one point not being scaled or translated. Fixed. + A constant starting with a decimal (eg, .25) caused CurveExpert to bomb (when defining a user model). This has been fixed so that these constants are accepted. + A comma-delimited data file was not read correctly. A new file reading system was implemented to read files with any type of (unspecified) delimiter between the data columns + if a data file was not read correctly, the filename in the status bar showed the unreadable file instead of the previous file. Fixed. + the common dialogs (file open/save, print) did not accept keystokes until after they were clicked with the mouse, which makes it terribly hard for non-mouse users. Fixed. + If the current path was changed from CurveExpert, the help file was not found. Fixed. Nov. 9, 1995, v. 1.11 =========================================================================== New Features: + the data point markers on graphs can now be changed to filled or unfilled circles, squares, triangles, pluses, or crosses. Changes: + Small optimizations made to the speed of the user interface + The main window is now fully resizable + The position and size of the main window is saved on exit and restored the next time CurveExpert runs Bug Fixes: + Whoops! The new file reading procedure masked out all minus and minus signs in the data, so that numbers like -10 and 10e-3 were not read correctly. Fixed. + the exception reporting dialog box did not properly draw the exclamation point's background, which should match the dialog color. Fixed. + the single-precision version still read files incorrectly sometimes. Fixed. + the initial guess dialog sometimes opened unconditionally on the next fit performed after a CurveFinder evaluation. Fixed. Nov. 13, 1995, v. 1.12 =========================================================================== New Features: + Differentiation and integration of a calculated curve fit is now supported, similar to the implementation of QuickCalc. Changes: + If background processing is enabled, during iteration the cursor is a combined arrow/hourglass to inform the user that he/she can still perform operations. + editing points in the spreadsheet is now prohibited while any iteration is taking place. + Drawing of data points on a graph is internally clipped if it is outside of the graphing window. This allows for faster graph drawing if many points are outside of the graph pane. + A separate set of application-wide defaults are maintained for the single-precision and double-precision versions (registered version only) Bug Fixes: + Periods by themselves in the user models were parsed as the value zero instead generating a syntax error. Fixed. + A plot that was copied to the clipboard failed to "clip" data points that were outside of the graphing pane, resulting in points being drawn outside of the intended area. Fixed. + The information button on a graph window would sometimes disappear if a window was sized smaller. Fixed. + After copying a plot to the clipboard, the current graph resolution was incorrectly reset to 1. Fixed. + Extremely small parameter guesses were not allowed in the parameter guess dialog, since its precision was limited to six places. Fixed. Nov. 25, 1995, v. 1.13 =========================================================================== Changes: + The data manipulation tools have now been merged into one organized, tabbed dialog. + The model analytical tools have now been merged into one organized, tabbed dialog. + Cascading a large number of windows would sometimes result in some windows being moved off of the screen. Now, the cascade restarts at the top left if a window might be moved off-screen. + The built-in models have been reordered so that operations such as calculations and window manipulations naturally fall into a grouped arrangement. + the graph autoscaling algorithm has been rewritten to be more reliable + The info button on the graphing window has been changed and moved to be less obtrusive. + sizing restrictions on the graphing windows have been removed. Bug Fixes: + Whoops! Another problem with the file reading engine caused columns starting with a negative number to be discarded. Fixed. + Entering a user model with no parameters was allowed when it shouldn't have been. Now, a syntax error is generated. + the Window|Tile command sometimes worked strangely if graphing windows had been closed prior to invoking it. Fixed. + the Window|Cascade command did not properly cascade windows that were minimized. Fixed. + the last tick and label sometimes wasn't shown on the x/y axes of plots. Fixed. + the implementation of filled points didn't produce a filled entity for the circle or triangle when printed. Fixed. + The user was still asked whether to save a file or not upon exiting, even if the file had just been saved. Fixed. + CurveExpert will now run even if ctl3dv2.dll is not found. Dec. 2, 1995, v. 1.14 (Shareware Only) =========================================================================== Bug Fixes: + Graph Attributes/Graph Scaling Dialogs were not initialized properly in the Shareware version. Fixed.