History
 

Implicit © Copyright 1990-2005.  All rights reserved.
Donald E. Weaver, Andrew Wood, and David Lovelock
Department of Mathematics
University of Arizona
Tucson, Arizona 85721

• Version 1.00. Initial release.
• Version 1.01. Enabled resizing of the plot window.
• Version 1.02. Made various cosmetic changes.
• Version 1.03.
  • Fixed a bug in the parser involving the function "abs(x) - 1".
  • Included the files "typical.imw", "white&black.opt", and "black&white.opt" in the distribution "implicit.zip".
• Version 1.04.
  • Fixed a bug in the numerical input routine when the sole "numerical" entry was ".". It is now replaced by "0".
  • Corrected an oversight in the "Increment c" input routine, so it does not permit the entry of two decimal points.
  • Corrected a plotting problem that occurred when zooming and centering while "Also plot" was checked and "Increment c" was not zero.
  • Added the menu option "Hide Tooltips" that hides or shows the tooltips.
  • Made various cosmetic changes.
• Version 1.05.
  • Corrected another plotting problem that occurred while "Also plot" was checked and "Increment c" was not zero.
  • The graph is now automatically reprinted when the color options are changed.
  • The graph is now automatically reprinted when the window is resized.
  • The graph is now automatically reprinted when the axes are resized, and the "Accept" button is pressed.
  • Made various cosmetic changes.
• Version 1.06.
  • Corrected a problem that occurred when the window was resized manually.
  • Made various cosmetic changes.
• Version 1.07. Private version released to Sheldon Gordon.
• Version 1.08.
  • Changed zooming so it now zooms about the center of the window.
  • Added a menu item "Restore Default Window Size" under "Options". If the user has resized the window by dragging on its sides, this will restore that window to the original size. If the window has been "Maximised" (by clicking on button on the top right of the window), then the user needs to "Restore Down" (by clicking on corresponding button on the top right of the window) first.
  • Added the ability to plot successive curves in different colors.
  • Added the file "classical curves.imw", which contains the formulas for such curves as the astroid, the lemniscate, etc.
  • Added a "Tips" item to the Help file.
• Version 1.09.
  • Corrected a color problem that occurred when the window was resized.
  • Added the ability to print the graphs.