Version 2.0 of TOF_VIS contains the following additions and changes to the version 1.1 ( summer 1996 ) release.
ADDITIONS:
1. Hard Copy Output: TOF_VIS now supports printing to postscript files and printers. The printing capabilities were added using the freely available plotting package PGPLOT. ( Available via ftp from http://astro.caltech.edu/~tjp/pgplot/ )
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| To print, select "PRINT..." from the "FILE" menu. | The popup print dialog box controls printing and obtains a list of available printers on the system. |
The list of available printers can be displayed using the down arrow button on the print dialog box. TOF_VIS uses the "printcap" file to get the list of printers from UNIX systems and uses system service calls to get the list of print queues from OpenVMS systems.
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Since the output is postscript, only a postscript capable printer should be selected in the dialog box. The default printer may be specified using the environmental variable TOF_VIS_PS_PRINTER. The IMAGE display of all spectra and the "horizontal" and "vertical" graphs are all printed separately with appropriate labels, axes and legends.
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| A portion of the "Image" print preview. The color-intensity scale appears at the bottom, and the axes are labeled and annotated. |
The "horizontal" graph can now contain several saved spectra ( see 3. below ), in addition to the spectrum currently selected on the image. The currently selected spectrum is always printed. The legend for the graph of multiple spectra can be positioned at the top left, top center, top right or removed entirely using the OPTION menu.
2. Masking: The user can now mark certain spectra to be masked off using the menu item "IMAGE <Toggle Spectrum On/Off>" in the EDIT menu. This will blank out the currently selected spectrum. As many spectra as desired can be masked off and the list of spectra that are masked off can be saved to or loaded from a file using an option on the FILE menu.
3. Multiple Spectra on Graph: The "horizontal" graph that displays the currently selected spectrum can now save and display up to 10 spectra simultaneously for easy comparison. Basic control of the list of displayed spectra is available on the EDIT menu. Specifically, the option "HOR. GRAPH <Save Current>" adds the currently selected spectrum to the graph. As the cross-hairs are moved over the IMAGE region, the currently selected spectrum will be displayed and updated in addition to any other spectra that have been saved. The last spectrum saved can be deleted using the option "HOR. GRAPH <Unsave Last>" and the list of saved spectra can be cleared using the option "HOR. GRAPH <Clear Saved List>".
4. Additional Color
Scales: Two additional color scales can be selected, a
negative gray scale and the somewhat brighter more colorful
"heated object" color scale used in some PGPLOT
examples.
CHANGES:
1. System Requirements: Building TOF_VIS with printing support now requires PGPLOT and a Fortran77 compiler ( GNU g77 on LINUX ), in addition to MOTIF and C. If printing support is not needed, then only MOTIF and C are required.
2. Data Representation: Floating point values are now used for all spectrum values throughout the program. It is no longer necessary to rescale the data to the range [0,65535] required for unsigned 16 bit integer values. This change extends to the data file access routines. If users have written their own data access routines, the interface will have to be changed to pass arrays of floating point values to TOF_VIS rather than integer values.
3. Menu Bar: The menu bar has been rearranged somewhat. Specifically, the different X and Y axis options for the image and graph are now selected from a VIEW sub menu rather than the OPTIONS sub menu. An EDIT sub menu has been added to control masking and the list of spectra displayed in the "horizontal" graph region. Toggle buttons that mark the currently selected item are now used where appropriate.
4. User Interface: Some minor improvements to the user interface, such as selecting the color scale with a pop up menu, have been made.
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