STSDAS: Space Telescope
Science Data Analysis System

igi

igi

Package: stsdas.graphics.stplot



NAME

igi -- Interactive Graphics Interpreter


PARAMETERS


DESCRIPTION


Standard Input and Standard Output
Data
Coordinates and Scaling

Move

Axes
Macros

Command Buffer
Cursor Interaction

NEW FEATURES


COMMANDS

!               Escape a command to the cl
!cl             Spawn a cl process (bye ==> return to igi)
!!              Escape a command to the host
!!!             Spawn a host (VMS) process (logout ==> return to igi)
?               Page the help summary
^               Re-execute a previous command

ANGLE         	Set the marker and text rotation angle
APROPOS         List commands associated with a keyword
AXIS            Draw and label an arbitrary axis
BARGRAPH        Draw a bar graph (histogram-style plot)
BOX             Draw and label the axes
BYE             Terminate igi (alias for END)
COLOR		Set (hardware-dependent) color index
CONNECT         Draw a (polyline) curve connecting the data coordinates
CURSES          Read back cursor position (IRAF cursor mode)
DATA            Specify the input text data file
DDRAW           Pen down move (draw) in NDC
DLIST           Print the data values
DMOVE           Pen up move (draw) in NDC
DOT             Draw a single marker
DRAW            Pen down move (draw) in WC
DRELOCATE       Pen up move in NDC
ECOLUMN         Read errors from a column of the text data file
EDITCMD         Edit the command buffer or macro text
EEVALUATE       Operate on error values
ELLIPSE		Draw an ellipse 
END             Exit igi or terminate macro define (end the current mode)
ERASE           Erase the screen
ERRORBAR        Draw error bars
ETYPE           Change the error bar style
EXPAND          Set the marker and text size
FILLPAT		Specify the fill pattern for hollow symbols and bar graphs
FITPIX		Specify a viewport to match shape of image raster
FMTICK		Specify the axis tick label format
FONTSET		Select igi or gio font set
GRID		Draw lines between major axis ticks
HELP            Print help
HISTOGRAM       Draw a histogram-style plot (bar graph)
ID              Write identification label 
IMGWCS		Toggle using image WCS for X values
INPUT           Execute commands from a file
JUSTIFY         Set text justification
LABEL           Draw text at current position
LIMITS          Set the plot scale
LINES           Specify the range of input rows to read
LIST            List the command buffer or macro text
LOCATION        Set the viewport on the virtual page
LTYPE           Set the line style (hardware dependent)
LWEIGHT         Set the line width (hardware dependent)
MACROS          List defined macros
MARGIN		Re-scale to include a border between curve and axes
MENU            Page the help summary
MINMAX          Print the data range
MOVE            Pen up move in WC (alias for RELOCATE)
NOTATION        Set the format for axis labels
NUMBER		Write the element number at each data coordinate
PAGECMD         Page the command buffer or macro text
PCOLUMN         Read point specifications from the input data file
PDRAW           Pen down move (draw) in viewport coordinates (PC)
PEVALUATE       Operate on point code values
PHYSICAL        Set the virtual page in physical device coordinates
PIXMAP		Render (display) a pixmap raster image
PLAYBACK        Execute the commands in the command buffer
PMOVE           Pen up move in PC (alias for PRELOCATE)
POINTS          Draw a polymarker at input data coordinates
POLYGON		Draw a closed polygon using the data coordinates
PRELOCATE       Pen up move in PC (alias for PMOVE)
PSFONT		Specify a user-defined PostScript font
PTYPE           Specify the point marker type
PUTLABEL        Draw a label with a specified justification
READ            Read commands into the command buffer without execution
RELOCATE        Pen up move in WC
RESET           Return settable plot and data parameters to defaults
SAOCMAP		Apply a colormap in SAOimage format to a rendered image
SECTION		Read an image section for a plot buffer
SHOW            Page the plot limits and attributes
STEP            Draw a stepped curve (histogram without vertical lines)
TICKSIZE        Set the axis tick spacing
TITLE           Specify the plot title
ULLIM		Draw upper or lower limit symbols
UNDO            Selectively erase the last plot command
VDRAW           Pen down move (draw) in VPC
VERSION		Show igi version and date
VMOVE           Pen up move in VPC (alias for VRELOCATE)
VPAGE           Set the virtual page in normalized coordinates
VRELOCATE       Pen up move in VPC
WCSLAB		Label the viewport in WCS coordinates
WINDOW		Divide screen into panes
WRITE           Write the command buffer to a file
XCOLUMN         Read X coordinates from a column of the data file
XEVALUATE       Operate on X data values
XFLIP           Flip X axis
XLABEL          Specify the X axis label
XLOGARITHM      Take common log of X data
XSECTION	Read X coordinates from an image section
YCOLUMN         Read Y coordinates from a column of the data file
YEVALUATE       Operate on Y data values
YFLIP           Flip Y axis
YLABEL          Specify the Y axis label
YLOGARITHM      Take common log of Y data
YSECTION	Read Y coordinates from an image section
ZEVALUATE       Operate on Z data values
ZRANGE		Specify range of pixel values to map to display range
ZSECTION	Read image section as a pixmap raster

BUGS Known IGI bugs EXAMPLES Example IGI use and scripts

references References to programmers involved

Eric W. Wyckoff - - wyckoff@stsci.edu
Last updated: 13 July 1998