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Data Table Display: mmDataTable

mmDataTable Screen Shot

The application mmDataTable provides a data display service to its client applications. It accepts data from clients and displays it in a window. Its typical use is to display the evolving values of quantities computed by a micromagnetic solver program.

mmDataTable may be started either by selecting the mmDataTable button on mmLaunch, or from the command line via

tclsh app/oommf/oommf.tcl mmDataTable [-console]

The client application(s) that send data to mmDataTable for display control the flow of data. The user, interacting with the mmDataTable window, controls how the data is displayed. Upon launch, mmDataTable displays only a menubar. Upon user request, a display window below the menubar displays data values.

Each message from a client contains a list of (name, value, units) triples containing data for display. For example, one element in the list might be {Magnetization 800000 A/m }. mmDataTable stores the latest value it receives for each name. Earlier values are discarded when new data arrives from a client.

mmDataTable does not support any data output or storage facilities. To save tabular data, use the mmGraph or mmArchive applications.

The Data menu holds a list of all the data names for which mmDataTable has received data. Initially, mmDataTable has received no data from any clients, so this menu is empty. As data arrives from clients, the menu fills with the list of data names. Each data name on the list lies next to a checkbutton. When the checkbutton is toggled from off to on, the corresponding data name and its value and units are displayed at the bottom of the display window. When the checkbutton is toggled from on to off, the corresponding data name is removed from the display window. In this way, the user selects from all the data received what is to be displayed. Selecting the dashed rule at the top of the Data menu detaches it so the user may easily click multiple checkbuttons.

In addition to selecting what data names are displayed, the user may also control the format in which the data values are displayed. A mouse click on a displayed data value brings up a dialog box in which the user may specify the formatting the value undergoes (by the Tcl command format) prior to display. The Options menu includes a Format menu item which lets the user set the default formatting for data values.

The menu selection File|Exit terminates the mmDataTable application. The menu Help provides the usual help facilities.

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OOMMF Documentation Team
February 23, 2000