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Institut Laue-Langevin

The Computing for Science (CS) group supports ILL scientists, students and visitors in a number of activities including data analysis, instrument simulation and sample simulation.

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All Software

Display

The Display Menus

The Display Menus are situated on top of the Main frame window, and are indicated by a '>' sign.

1. File

This menu enables to export data and close exit appilcation

    Export as Image
       choose a Display and save it as JPG, GIF, TIFF, BMP, PICT, PNG
    Export as Postscript/Print
       choose a Display and save it as PostScript or send it to a Printer
    Export as Text
       choose a Display and save it as a text file
    Show as Table
       choose a data set and show its content as a table (not editable)
    Close Data/Display
       choose a Display/Data set and close it (delete data/remove)
    Exit
       exit Display application

2. Edit

This menu enables to configure/view display options Edit Preferences
   edit the Dial Display preferences (see Help for that topic)
Show display list
   displays the list of active displays, as well as basic statistics
Update displays
   force the update of displays (instead of waiting for automatic update)
Auto Update: ON/OFF
   toggles the automatic display update (with Frequency specified in Preferences).
   Simple Displays (not overlayed) will then have their dta updated.
Auto Save: ON/OFF
   toggles the automatic display save as text files (with each display Update)

3. Help

This menu displays raw text versions concerning some features of Display.

The Display Windows

1. Main Frame

This is the Display panel main frame. It shows all displays gathered in a common window (some displayed may anyway be specified as independent). The orientation of the panel (horizontal/vertical) is to be specified at startup.

You may act on displays either through the menus, or just by cliking on them or their elements (axes, plots, texts, ...)

2. Edit Preferences

PREFERENCES menu Help for "Displays" This menu enables to change some internal settings controling the execution of Displays
OrientRow=<0|1>
   sets the prefered orientation of display panel
Gathered=<0|1>
   when 1, all displays are gathered in the same panel
   when 0, they appear as separate windows
Verbosity=<level>
   affects the amount of messages displayed by Displays
History size=<-2,0,3:100>
   sets the number of counts values to remember and plot (and optionally save)
Frequency
   sets the update frequency of Displays

3. Show Display List/Statistics

This window displays basic information and statistics on the opened displays.
Each display may contain more than one data set (indicated by '+' characters).
You may save this information into a file.

4. Display/Data Selector

This selector pops-up when you are requested to select a display or data set.
Each display may contain more than one data set (indicated by '+' characters)

The Display Functionalities

1. Types of Displays

Surfaces, Images, Plots, Accumulated plots

Images

Plots

Surfaces

Accumulated plots
When used with the 'catenate' option, the display grows with time, adding new data to it.

All displays may be edited, in order to change/customize their appearence (colors, fonts, etc..). This is possible when cliking on the graphical objects (figures, axes, images, surfaces, plots, legends, text...)
Also, when selecting a curve, the mouse position is indicated below the graph.
You may resize the whole Display Panel, but this is rather slow and its probably better not to have too big displays.

2. Displays options

These options are to be used when calling the "display" command:

        display, Data=<data set>, Name_Data="<Data set Name>", [Options]
    with:

    Options=</log,/scatter,/histogram,/polar>
            </add,/overlay,/catenate,/unactivate,/exact,/no,/delete>
            <IX=[expr], IY=[expr], Name_IX="...", Name_IY="..."
             Comment="...", Auto_Load="...">
       sets some display options to use.
       options that affect Data
          IX=[expr] sets the expression/variable to use as X axis values (for 1D/2D data sets)
          IY=[expr] sets the expression/variable to use as Y axis values (for 2D maps)
          Name_IX="..." sets the name of X axis (when IX is given)
          Name_IY="..." sets the name of Y axis (when IY is given)
          Name_Data="..." sets the name of the Data set (default is the Variable name)
          Auto_Load="..." sets the expression to be evaluated before each update
          Comment="..." sets a comment to appear on plot
       options that affect the way data is stored. Default is to replace data.
          /add: to add (sum-up) new data with the existing one
          /overlay: to display new data set on the same axis system
          /catenate: to append new data with previous one
          /unactivate: do not update/display data
          /delete: delete data set/display
          /no: remove the other options from data/plot options list
       options that affect the way the display appears
          /scatter: only plots symbols (default is line and symbols)
          /histogram: plots data as an histogram (steps)
          /polar: plots data in polar coordinates, when IX is given
          /detached: when a new plot will be created, it will appear as a separate window
          /exact: the [XYZ] axis will be tight around data

    You may not modify these options from Display itself, but from the clients (for instance Light). Some of the settings may be changed from the property windows poping-up when cliking on the graphical objects (figures, axes, images, surfaces, plots, legends, text...)

3. Export in different formats

Display may export displays and plots in different formats.

    Image: Creates an image file of the selected display/data as BMP, GIF, JPEG, PICT, PNG, TIF and SUN.
    PostScript: Either sends the display/data for printing or into a PS file as EPS (recommended) or HPGL.
    Text: The selected display/data set is stored in text form into a file. This file may be read for data analysis.

4. Show as Table

This feature enables to look at the data values,
but not to edit it.

5. AutoUpdate

This option will automatically update all data sets/displays (with Frequency specified in Preferences) for non overlayed Displays (having only one data set).

6. AutoSave

This option will automatically save all data sets as text files (with each display is updated)