USGS Gr Release Notes
February 1, 2001
John Donovan

2001-02-01
     Scroll bar appears next to buttons on left side of window
     if the window isn't big enough to show all the buttons.
     Draw command added to tools menu for drawing curves.
     Linux and Solaris versions made available.
     Bug fixed where reordering graphs caused printing errors.

2000-11-13
     Properties Dialog redone to allow editing of every object's
     properties using a combination tree/table interface.
     Objects can be cut or copied and pasted as a link or copy
     using the Properties Dialog.
     Multiple pages can be open at once and cycled.
     Pages and/or data can be saved to or read from an XML file.
     Toolbar reorganized and pan/zoom/select radio buttons added.
     Menus streamlined.
     Open file command for opening all file types except template.
     Delimited data file added as a column data format.

2000-02-18
     Modify Dialog box redone.  Allows creating a new curve as
     output.
     Modify Dialog has undo and redo buttons.
     Detailed Status Bar added to allow editing curves.
     Most page layout changes, such as cutting and pasting
     curves, are undoable.
     Fixed a bug that caused some symbols to be omitted in
     PostScript output.
     Added a smart point reduction algorithm to thin out points
     on PostScript output.
     Point reduction parameters can be changed or debugged using
     the Printing tab in the Properties Dialog.
     PostScript output now uses rounded line joints instead of
     mitered ones.  This eliminates small, but potentially
     misleading, spikes in the curves.

1999-11-30
     Gr web page made available at
     http://wwwdcascr.wr.usgs.gov/projects/gr

1999-06-14
     Allow dragging graphs to new positions.
     Added colors and line patterns for curves.
     As new curves are added to a graph, they appear with
     different line patterns and colors.
     Cut, Copy, and Paste for curves.
     Page layout can be saved as a template file.
     Multiple files can be opened and overlayed.
     User can choose between multiple data input formats.

1999-05-04
     Save method added for GS data.
     Missing points are marked as gaps.
     Multiple levels of undo and redo.  User can pick the number
     of levels.
     Ctrl-Click to select more than one curve.
     Linear Gap Filler added.

1999-04-06
     Allow symbols to be drawn at points along the curve.
     Status bar displays the coordinates of the nearest point to
     the cursor.
     Selected points can be deleted.
     Selected points can be set equal to, multiplied by, or added
     to a constant.

1999-03-30
     Allow editing of graph and axis properties using dialog box.
     PostScript bounding box works for both portrait and
     landscape orientation.

1999-03-15
     Zoom window command added.

1998-12-18
     Development of Gr became a full-time project.

1998-06-11
     Started work on a Java version of Gr using Magician OpenGL.

1997-12-23
     Started work on a C++ plotting program named Gr, using
     OpenGL and GLUT.

1997-01-06
     Looked into writing a portable version of Jon Burau's tplot,
     which was written using IRIS GL and only ran on the SGI. 
     The program would need to read GS format, display three
     box plots on the screen, and allow for printing. Eventually,
     tedit capabilities could be added, such as direct editing
     and saving of data.  Estimated development time for plotting
     version: one month.