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NAME

data:smith-chart - Plot smith-chart (Decida Procedure)

SCREEN-SNAPSHOT

snapshot  

USAGE

          data:smith-chart d args

ARGUMENTS

d data object with columns to be plotted.
args Real and Imaginary column labels to be plotted, or OPTIONS.

OPTIONS

-frame <frame-name> Name of frame widget to pack plot window in. Can also be ".". If this is not specified, top-level is created.
-title <title> Title of plot.
-symbols <list> List of symbols for symbol menu.
-colors <list> List of colors for color menu.
-nextdata <data name> Change to new data object, for column names.
-post <file> PostScript plot file is written.
-noview Don't display plot.
-show <0,1> Display plot if 1.
-freq <column> Specify the frequency column in data object. If no frequency column is specified, FREQ is used. If FREQ is not present, data row indices are used.
* Other options are interpreted as real and imaginary columns.

GLOBALS

env(DISP_MODE) Display mode. One of (XWINDOW|TERMINAL|BATCH). XWINDOW mode makes full use of X11 DISPLAY. TERMINAL mode does nothing. BATCH mode does nothing.
env(DecidaPlotWait) if YES|yes, then wait for single plot to be closed before returning
DecidaPlotRegistry Registry of plots, and plot information.
psfont PostScript font mapping array (defined in init.tcl)

RESULTS

X-Y plot megawidget is displayed.

EXAMPLE-CALL

             data d
             data d1
             d read spar.out
             d1 read spar.out.1
             d smith S11R S11I -freq FREQ -nextdata d1 S11R S11I -freq F

MOUSE

button 1: zoom-in Pressing down button 1 starts a zoom-in operation. Holding button 1 down and moving to new location displays a zoom-in box with endpoints at original location and current location. Releasing button 1 changes axes limits of graph to those of the zoom-in box.
button 2: restore Pressing down button 2 returns axes limits to the original ones.
button 3: line parameter report Pressing down button 3 starts a line-segment operation for reporting slope and intercepts. Holding down, moving, then releasing define a line-segment. After release, a report of the line-parameters of the defined line segment: slope, y-intercept, x-intercept.

AUTHORS

Richard Booth, Michael McLennan, George Howlett

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