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=== Drawing primitives
PGLINE -- draw a polyline (curve defined by line-segments)
PGPOLY -- draw a polygon, using fill-area attributes
PGPT1 -- draw one graph marker
PGPT -- draw several graph markers
PGPNTS -- draw several graph markers, not all the same
PGARRO -- draw an arrow
PGCIRC -- draw a circle, using fill-area attributes
PGRECT -- draw a rectangle, using fill-area attributes
PGMOVE -- move pen (change current pen position)
PGDRAW -- draw a line from the current pen position to a point
=== Axis
PGAXIS -- draw an axis
PGBOX -- draw labeled frame around viewport
PGTICK -- draw a single tick mark on an axis
PGTBOX -- draw frame and write (DD) HH MM SS.S labelling
=== Text
PGLAB -- write labels for x-axis, y-axis, and top of plot
PGTEXT -- write text (horizontal, left-justified)
PGMTXT -- write text at position relative to viewport
PGPTXT -- write text at arbitrary position and angle
PGETXT -- erase text from graphics display
PGIDEN -- write username, date, and time at bottom of plot
PGLEN -- find length of a string in a variety of units
PGQTXT -- find bounding box of text string
=== Histgram
PGBIN -- histogram of binned data
PGHIST -- histogram of unbinned data
=== Error bar
PGERR1 -- horizontal or vertical error bar
PGERRB -- horizontal or vertical error bar
PGERRX -- horizontal error bar
PGERRY -- vertical error bar
=== 2D drawing
PGCONT -- contour map of a 2D data array (contour-following)
PGCONS -- contour map of a 2D data array (fast algorithm)
PGCONB -- contour map of a 2D data array, with blanking
PGCONF -- fill between two contours
PGCONL -- label contour map of a 2D data array
PGCONX -- contour map of a 2D data array (non rectangular) (not implemented in Ruby/PGPLOT)
PGIMAG -- color image from a 2D data array
PGCTAB -- install the color table to be used by PGIMAG
PGGRAY -- gray-scale map of a 2D data array
PGPIXL -- draw pixels
PGVECT -- vector map of a 2D data array, with blanking
PGWEDG -- annotate an image plot with a wedge
PGHI2D -- cross-sections through a 2D data array
=== Cursor
PGBAND -- read cursor position, with anchor
PGCURS -- read cursor position
PGLCUR -- draw a line using the cursor
PGNCUR -- mark a set of points using the cursor
PGOLIN -- mark a set of points using the cursor
=== Control
PGOPEN -- open a graphics device
PGBEG -- open a graphics device
PGCLOS -- close the selected graphics device
PGEND -- close all open graphics devices
PGENV -- set window and viewport and draw labeled frame
PGASK -- control new page prompting
PGPAGE -- advance to new page
PGERAS -- erase all graphics from current page
PGBBUF -- begin batch of output (buffer)
PGEBUF -- end batch of output (buffer)
PGPANL -- switch to a different panel on the view surface
PGPAP -- change the size of the view surface
PGRNGE -- choose axis limits
PGSAVE -- save PGPLOT attributes
PGUNSA -- restore PGPLOT attributes
PGSCRL -- scroll window
PGSUBP -- subdivide view surface into panels
PGUPDT -- update display
=== Set attributes
PGSAH -- set arrow-head style
PGSCF -- set character font
PGSCH -- set character height
PGSCI -- set color index
PGSCIR -- set color index range
PGSCLP -- enable or disable clipping at edge of viewport
PGSCR -- set color representation
PGSCRN -- set color representation by name
PGSFS -- set fill-area style
PGSHLS -- set color representation using HLS system
PGSHS -- set hatching style
PGSITF -- set image transfer function
PGSLCT -- select an open graphics device
PGSLS -- set line style
PGSLW -- set line width
PGSTBG -- set text background color index
PGSVP -- set viewport (normalized device coordinates)
PGSWIN -- set window
PGVSIZ -- set viewport (inches)
PGVSTD -- set standard (default) viewport
PGWNAD -- set window and adjust viewport to same aspect ratio
=== Inquire attributes
PGLDEV -- list available device types on standard output
PGQAH -- inquire arrow-head style
PGQCF -- inquire character font
PGQCH -- inquire character height
PGQCI -- inquire color index
PGQCIR -- inquire color index range
PGQCLP -- inquire clipping status
PGQCOL -- inquire color capability
PGQCR -- inquire color representation
PGQCS -- inquire character height in a variety of units
PGQDT -- inquire name of nth available device type
PGQFS -- inquire fill-area style
PGQHS -- inquire hatching style
PGQID -- inquire current device identifier
PGQINF -- inquire PGPLOT general information
PGQITF -- inquire image transfer function
PGQLS -- inquire line style
PGQLW -- inquire line width
PGQNDT -- inquire number of available device types
PGQPOS -- inquire current pen position
PGQTBG -- inquire text background color index
PGQVP -- inquire viewport size and position
PGQVSZ -- inquire size of view surface
PGQWIN -- inquire window boundary coordinates
==== Hereafter not implemented in Ruby/PGPLOT
=== Utility
PGNUMB -- convert a number into a plottable character string
PGRND -- find the smallest `round' number greater than x
=== Drawing function
PGFUNT -- function defined by X = F(T), Y = G(T)
PGFUNX -- function defined by Y = F(X)
PGFUNY -- function defined by X = F(Y)
=== Alias
PGADVANCE -- non-standard alias for PGPAGE
PGBEGIN -- non-standard alias for PGBEG
PGCURSE -- non-standard alias for PGCURS
PGLABEL -- non-standard alias for PGLAB
PGMTEXT -- non-standard alias for PGMTXT
PGNCURSE -- non-standard alias for PGNCUR
PGPAPER -- non-standard alias for PGPAP
PGPOINT -- non-standard alias for PGPT
PGPTEXT -- non-standard alias for PGPTXT
PGVPORT -- non-standard alias for PGSVP
PGVSIZE -- non-standard alias for PGVSIZ
PGVSTAND -- non-standard alias for PGVSTD
PGWINDOW -- non-standard alias for PGSWIN
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