20.3 87

1. 1-Feb-1987 - Typing Ctrl_C will abort the current plot or print. The SET HISTOGRAM command may select histograms by substring in the title. NEXT|PREVIOUS may be combined with NAME= to select the next hist which matches the name. NEXT|PREVIOUS will wrap around the end of the histogram list unless WRAP OFF is specified or in BATCH mode. 2. 12-Feb-1987 - The journal file will contain coordinates entered by cursor. The AUTOPLOT mode was added. The condition INTERACTIVE may be tested by the IF command. MARGINS may be specified in addition to the SCREEN size in the SET SIZE command. 3. 26-Feb-1987 - Added DEFINE COMMAND and SHOW HIST may now show more information. The option CURRENT has been added to SHOW HIST. 4. 10-Mar-1987 - Added option APPEND to SET HIST. Added options POINTS, and SETS to BIN. Histogramming speed was optimized for cases with a series of identical Y values. SHOW DATA gives errors on statistics, and statistics are generated for each data set separately. Fixed problem with histogramming data withou Z values as 3-d plot. 5. 7-Apr-1987 - Added commands DELETE, FIT. Fixed some problems with separate data sets. 6. 30-Apr-1987 - Added option ADD to SET HIST. If a mesh was read with one axes increasing and the other decreasing, it would not plot properly. This has been fixed. 7. 8-May-1987 - Added contour plotting, and LOG_ERROR routine to trap arithmetic errors. The error handling returns to the T2MAIN program. 8. 19-May-1987 - Virtual memory added to VAX version. 9. 5-Jun-1987 - Fixed hidden line algorithm. It used wrong average X,Y to calculate the vertical. As a result it treated as hidden many lines incorrectly. 10. 11-Jun-1987 - Fixed infinite loop in T2MSFV. Rewrote T2MESH for better hidden line removal. The old algorithm would leave in hidden lines, or omit visible line segments that are bisected by sharp peaks. The new algorith fixes these errors with less than a 5% loss in cpu speed. 11. 17-Jun-1987 - Fixed problems with title overflow for small page sizes. Added LINES parameter to SET TITLE and SHIFT to SET LABELS. Added numbered windows. Negative SCRD will produce constant view of mesh. Dot plots and mesh plots were optimized for max speed. Essentially the user can select windows more easily. 12. 23-Jun-1987 - Fixed problems with 3-d text. The DUPLEX font did not work for 3-d text, it caused array overflows or spurious lines. 3-d text processing was somewhat optimized. The syntax of the SET GRID command has been brought in line with set AXES,LABEL,TITLE commands. 13. 16-Jul-1987 - Fixed SET THREE to conform to documentation. 14. 23-Jul-1987 - Modified T2TLAB so that labels may be generated for data with a large range. Some changes were also made in T2CNTR. Added Table generation for 1/2-d data. Limit generation was modified to keep the limits within reasonable values, when the data has very small relative variation. Title generation was modified to keep long titles on the screen. The character size is reduced by up to a factor of 4 if the title is too long to fit. 15. 30-Jul-1987 - Modified YEAR/MONTH scale so that all days occupy equal space. 16. 30-Aug-1987 A. Lexicals were added as input to allow access to internal numbers. B. The SET STATISTICS command allows the user to set the actual statistical data used by the lexicals. C. SET DIGITS determines the number of digits used for output. DIGITS options in titles allow formatting of numbers in titles. D. PLOT TABLE - plots the data as a table of numbers. E. PLOT AXES/GRID - Has options X,Y,Z... to allow absolute user control over axes/grid generation. F. INHIBIT option has been added to SET LABELS, SET AXES... To allow inhibiting axes generation while still leaveing room for the axes. 17. 16-Sep-1987 - Added mesh data handling to X,Y,Z commands, as well as MINUS and DIVIDE options. MULTIPLY and DIVIDE commands may be used to manipulate histograms or spectra. The X,Y,Z commands were modified to handle DX,DY, and DZ automatically. 18. 14-Oct-1987 - Added Lexicals for external histogram parameters. Modified PLOT command so that the current texture applies to the error bars. DEFINE VALUE and DEFINE STRING commands were added. S_ lexicals were added for access to string lexicals. 19. 31-Oct-1987 - Added LOG option to BIN, SWAP, X, SMOOTH, SET HIST, DEFINE HIST, ADD, MULTIPLY, and DIVIDE commands. Added SET MODE LOG for automatic logging. Added SET WINDOW LEVEL=n to make inset windows easier. Added INSIDE option to SET LABELS to make packed windows easy to create.