            Appendix A: Short Description of Routines

A.1 Initialization and Introductory Routines

DISINI      initializes DISLIN.
ERASE       clears the screen.
FILBOX      defines the position  and size of included meta-
            files.
HWORIG      defines  the origin  of the  PostScript hardware
            page.
HWPAGE      defines  the  size  of  the  PostScript hardware
            page.
INCFIL      includes metafiles into a graphics.
METAFL      defines the plotfile format.
NEWPAG      creates a new page.
ORIGIN      defines the origin.
PAGE        sets the page size.
PAGERA      plots a page border.
PAGHDR      plots a page header.
PAGMOD      selects a page rotation.
SCLFAC      defines a scaling factor for the entire plot.
SCLMOD      defines a scaling mode.
SCRMOD      swaps back- and foreground colours.
SETFIL      sets the plotfile name.
SETPAG      selects a predefined page format.
SETXID      defines an external X window or pixmap.
SYMFIL      sends a plotfile to a device.
UNIT        defines the logical unit for messages.

A.2 Termination and  Parameter Resetting

DISFIN      terminates DISLIN.
ENDGRF      terminates an axis system and sets the level
            to 1.
RESET       resets parameters to default values.

A.3 Plotting Text and Numbers

ANGLE       defines the character angle.
CHAANG      defines an inclination angle for characters.
CHASPC      affects character spacing.
CHAWTH      affects the width of characters.
FIXSPC      sets a constant character width.
FRMESS      defines the thickness of text frames.
HEIGHT      defines the character height.
MESSAG      plots text.
MIXALF      enables  control signs in character strings  for
            plotting indices and exponents.
NEWMIX      defines an alternate set  of control  characters
            for plotting indices and exponents.
NLMESS      returns the length  of character strings in plot
            coordinates.
NUMBER      plots floating-point numbers.
NUMFMT      determines the format of numbers.
NUMODE      modifies the appearance of numbers.
RLMESS      plots text  where the  position  is specified in
            user coordinates.
RLNUMB      plots numbers where the position is specified in
            user coordinates.
SETBAS      determines  the  position  of indices  and expo-
            nents.
SETEXP      determines  the character height  of indices and
            exponents.
SETMIX      defines  global control signs for plotting indi-
            ces and exponents.
TXTJUS      defines the alignment of text and numbers.

A.4 Fonts

BASALF      defines the base alphabet.
COMPLX      sets a complex font.
DUPLX       sets a double-stroke font.
DISALF      sets the default font.
EUSHFT      defines a shift character for special European
            characters.
GOTHIC      sets a gothic font.
HELVE       sets a shaded font.
HELVES      sets a shaded font with small characters.
HWFONT      sets a standard hardware font.
PSFONT      sets a PostScript font.
SERIF       sets a complex shaded font.
SIMPLX      sets a single-stroke font.
SMXALF      defines shift characters for alternate alphabets.
TRIPLX      sets a triple-stroke font.

A.5 Symbols

HSYMBL      defines the height of symbols.
RLSYMB      plots symbols  where the centre  is specified in
            user coordinates.
SYMBOL      plots symbols.
SYMROT      defines a rotation angle for symbols.

A.6 Axis Systems

AX2GRF      suppresses the plotting  of the upper X- and the
            left Y-axis.
AX3LEN      defines  axis lengths  for a  coloured  3-D axis
            system.
AXSLEN      defines axis lengths for a 2-D axis system.
AXSORG      determines the position of crossed axis systems.
AXSPOS      determines the position of axis systems.
AXSTYP      selects rectangular or crossed axis systems.
AXGIT       plots the lines X = 0 and Y = 0.
BOX2D       plots a border around an axis system.
CENTER      centres axis systems.
CROSS       plots the lines  X = 0  and Y = 0 and marks them
            with ticks.
ENDGRF      terminates an axis system.
FRAME       defines the frame thickness of axis systems.
GRACE       affects the clipping margin of axis systems.
GRAF        plots a two-dimensional axis system.
GRAF3       plots an axis system for colour graphics.
GRDPOL      plos a ploar grid.
GRID        overlays a grid on an axis system.
NOCLIP      suppresses clipping of user coordinates.
NOGRAF      suppresses the plotting of an axis system.
SETGRF      suppresses parts of an axis system.
SETSCL      sets automatic scaling.
TITLE       plots a title over an axis system.
XAXGIT      plots the line Y = 0.
XCROSS      plots the line Y = 0 and marks it with ticks.
YAXGIT      plots the line X = 0.
YCROSS      plots the line X = 0 and marks it with ticks.

A.7 Secondary Axes

XAXIS       plots a linear X-axis.
XAXLG       plots a logarithmic X-axis.
YAXIS       plots a linear Y-axis.
YAXLG       plots a logarithmic Y-axis.
ZAXIS       plots a linearly scaled colour bar.
ZAXLG       plots a logarithmically scaled colour bar.

A.8 Modification of Axes

AXCLRS      defines colours for axis elements.
AXENDS      suppresses certain labels.
DIGITS      sets the number of decimal places for labels.
HNAME       defines the character height of axis names.
INTAX       defines integer numbering for all axes.
LABDIS      sets the distance between labels and ticks.
LABELS      selects labels.
LABJUS      defines the alignment of axis labels.
LABPOS      determines the position of labels.
LABTYP      defines vertical or horizontal labels.
LOGTIC      modifies the appearance of logarithmic ticks.
MYLAB       sets user-defined labels.
NAMDIS      sets the distance between axis names and labels.
NAME        defines axis titles.
NAMJUS      defines the alignment of axis titles.
NOLINE      suppresses the plotting of axis lines.
RGTLAB      right-justifies labels.
RVYNAM      defines an angle for Y-axis names.
SCALE       defines the axis scaling.
TICKS       sets the number of ticks.
TICLEN      sets the length of ticks.
TICPOS      determines the position of ticks.
TIMOPT      modifies time labels.

A.9 Axis System Titles

HTITLE      defines the character height of titles.
LFTTIT      left-justifies title lines.
LINESP      defines line spacing.
TITJUS      defines the alignment of titles.
TITLE       plots axis system titles.
TITLIN      defines text lines for titles.
TITPOS      defines the position of titles.
VKYTIT      shifts titles in the vertical direction.

A.10 Plotting Data Points

BARS        plots a bar graph.
CHNATT      changes curve attributes.
CHNCRV      defines attributes changed automatically by
            CURVE.
COLOR       defines the colour used for text and lines.
CRVMAT      plots a coloured surface.
CURVE       plots curves.
CURVE3      plots coloured rectangles.
CURVX3      plots rows of coloured rectangles.
CURVY3      plots columns of coloured rectangles.
ERRBAR      plots error bars.
FIELD       plots a vector field.
GAPCRV      defines gaps plotted by CURVE.
INCCRV      defines the number of curves plotted with equal
            attributes.
INCMRK      selects symbols or lines for CURVE.
MARKER      sets the symbols plotted by CURVE.
NOCHEK      suppresses listing of data points that lie  out-
            side of the axis scaling.
PIEGRF      plots a pie chart.
POLCRV      defines the interpolation method used by CURVE.
RESATT      resets curve attributes.
SETRES      sets the size of coloured rectangles.
SHDCRV      plots shaded areas between curves.
SPLMOD      modifies spline interpolation.
THKCRV      defines the thickness of curves.

A.11 Legends

FRAME       sets the frame thickness of legends.
LEGEND      plots legends.
LEGINI      initializes legends.
LEGLIN      defines text for legend lines.
LEGOPT      modifies the appearance of legends.
LEGPAT      stores curve attributes.
LEGPOS      determines the position of legends.
LEGTIT      defines the legend title.
LINESP      affects line spacing.
MIXLEG      enables multiple text lines in legends.
NXLEGN      returns the width  of legends in plot coordi-
            nates.
NYLEGN      returns the height of legends in plot coordi-
            nates.

A.12 Line Styles and Shading Patterns

CHNDOT      sets a dotted-dashed line style.
CHNDSH      sets a dashed-dotted line style.
COLOR       sets a colour.
DASH        sets a dashed line style.
DASHL       sets a long-dashed line style.
DASHM       sets a medium-dashed line style.
DOT         sets a dotted line style.
DOTL        sets a long-dotted line style.
LINTYP      defines a line style.
LINWID      sets the line width.
LNCAP       sets the line cap parameter.
LNJOIN      sets the line join parameter.
LNMLT       sets the miter limit parameter.
MYLINE      sets a user-defined line style.
MYPAT       defines a global shading pattern.
PENWID      sets the pen width.
SHDPAT      selects a shading pattern.
SOLID       sets a solid line style.

A.13 Cycles

CLRCYC      modifies the colour cycle.
LINCYC      modifies the line style cycle.
PATCYC      modifies the pattern cycle.

A.14 Base Transformations

TRFRES      resets base transformations.
TRFROT      affects the rotation of plot vectors.
TRFSCL      affects the scaling of plot vectors.
TRFSHF      affects the shifting of plot vectors.

A.15 Shielding

SHIELD      defines automatic shielding.
SHLCIR      defines circles as shielded areas.
SHLDEL      deletes shielded areas.
SHLELL      defines ellipses as shielded areas.
SHLIND      returns the index of a shielded area.
SHLPIE      defines pie segments as shielded areas.
SHLPOL      defines polygons as shielded areas.
SHLRCT      defines rotated rectangles as shielded areas.
SHLREC      defines rectangles as shielded areas.
SHLRES      deletes shielded areas.
SHLVIS      enables or disables shielded areas.

A.16 Parameter Requesting Routines

GETANG      returns the current angle used for text and num-
            bers.
GETCLP      returns the currents clipping window.
GETCLR      returns the current colour number.
GETDIG      returns the number of decimal places used in la-
            bels.
GETFIL      returns the current plotfile name.
GETGRF      returns the scaling of the current axis system.
GETHGT      returns the current character height.
GETIND      returns the RGB coordinates for a colour index.
GETLAB      returns the current labels.
GETLEN      returns the current axis lengths.
GETLEV      returns the current level.
GETLIN      returns the current line width.
GETMFL      returns the current file format.
GETOR       returns the current origin.
GETPAG      returns the current page size.
GETPAT      returns the current shading pattern.
GETPLV      returns the patchlevel of the current DISLIN 
            library.
GETPOS      returns the position of the axis system.
GETRAN      returns the range of colour bars.
GETRES      returns the size of points used in 3-D colour
            graphics.
GETRGB      returns for RGB coordinates of the current
            colour.
GETSCL      returns the current axis scaling.
GETSP1      returns the distance between axis ticks  and
            labels.
GETSP2      returns the distance between axis labels and
            names.
GETSYM      returns the current symbol number and height.
GETTCL      returns the current tick lengths.
GETTIC      returns the number of ticks plotted between
            labels.
GETTYP      returns the current line style.
GETUNI      returns the current unit used for messages.
GETVER      returns the  version number  of the  currently
            used DISLIN library.
GETVK       returns the current lengths used for shifting.
GETVLT      returns the current colour table.
GETWID      returns the width of colour bars.
GETWIN      returns the position and size of the graphics
            window.
GETXID      returns the X window ID.

A.17 Elementary Plot Routines

ARCELL      plots elliptical arcs.
AREAF       plots polygons.
CIRCLE      plots circles.
CONNPT      plots a line to a point.
ELLIPS      plots ellipses.
LINE        plots lines.
NOARLN      suppresses the outline of geometric figures.
PIE         plots pie segments.
POINT       plots coloured rectangles  where the position is
            defined by the centre point.
RECFLL      plots coloured rectangles.
RECTAN      plots rectangles.
RNDREC      plots a rectangle with rounded corners.
RLARC       plots elliptical arcs for user coordinates.
RLAREA      plots polygons for user coordinates.
RLCIRC      plots circles for user coordinates.
RLELL       plots ellipses for user coordinates.
RLINE       plots lines for user coordinates.
RLPIE       plots pie segments for user coordinates.
RLPOIN      plots coloured rectangles for user coordinates.
RLREC       plots rectangles for user coordinates.
RLRND       plots for user coordinates a rectangle with
            rounded corners.
RLSEC       plots coloured pie sectors for user coordinates.
RLVEC       plots vectors for user coordinates.
SECTOR      plots coloured pie sectors.
STRTPT      moves the pen to a point.
VECTOR      plots vectors.
XMOVE       moves the pen to a point.
XDRAW       plots a line to a point.

A.18 Conversion of Coordinates

COLRAY      converts Z-coordinates to colour numbers.
NXPOSN      converts X-coordinates to plot coordinates.
NYPOSN      converts Y-coordinates to plot coordinates.
NZPOSN      converts Z-coordinates to colour numbers.
TRFCO1      converts one-dimensional coordinates.
TRFCO2      converts two-dimensional coordinates.
TRFCO3      converts three-dimensional coordinates.
TRFREL      converts X- and Y-coordinates to plot coordi-
            nates.
XINVRS      converts X plot coordinates to user coordinates.
XPOSN       converts X-coordinates to real plot coordinates.
YINVRS      converts Y plot coordinates to user coordinates.
YPOSN       converts Y-coordinates to real plot coordinates.

A.19 Utility Routines

BEZIER      calculates a Bezier interpolation.
BITSI2      allows bit manipulation on 16 bit variables.
BITSI4      allows bit manipulation on 32 bit variables.
FCHA        converts floating-point numbers to character
            strings.
FLEN        calculates the number of digits for floating-
            point numbers.
HISTOG      calculates a histogram.
INTCHA      converts integers to character strings.
INTLEN      calculates the number of digits for integers.
NLMESS      returns the length of character strings in plot
            coordinates.
NLNUMB      returns the length of numbers in plot coordi-
            nates.
SORTR1      sorts floating-point numbers.
SORTR2      sorts points in the X-direction.
SPLINE      returns splined points as calculated in CURVE.
SWAPI2      swaps the bytes of 16 bit variables.
SWAPI4      swaps the bytes of 32 bit variables.
TRMLEN      calculates the number of characters in character
            strings.
UPSTR       converts a  character  string  to uppercase let-
            ters.

A.20 Binary File I/O

CLOSFL      closes a file.
OPENFL      opens a file for binary I/O.
POSIFL      skips to a certain position relative to the
            start.
READFL      reads a given number of bytes.
SKIPFL      skips a number of bytes from the current posi-
            tion.
TELLFL      returns the file position.
WRITFL      writes a given number of bytes.

A.21 Bar Graphs

BARGRP      affects clustered bars.
BARPOS      selects predefined positions for bars.
BARS        plots bar graphs.
BARTYP      selects vertical or horizontal bars.
DIGITS      defines the number of decimal places in bar la-
            bels.
LABCLR      defines the colour of bar labels.
LABELS      defines bar labels.
LABPOS      defines the position of bar labels.

A.22 Pie Charts

CHNPIE      defines  colour and pattern  attributes  for pie
            segments.
DIGITS      defines  the number of decimal places in segment
            labels.
LABCLR      defines the colour of segment labels.
LABELS      defines pie labels.
LABPOS      defines the position of segment labels.
LABTYP      modifies the appearance of segment labels.
PIEEXP      defines exploded pie segments.
PIELAB      sets  additional  character  strings  plotted in
            segment labels.
PIEVEC      modifies  the arrow  plotted  between labels and
            segments.
SHDPIE      plots pie charts.
USRPIE      is  a  user-defined  subroutine  to  modify  pie 
            charts.

A.23 Coloured 3-D Graphics

AX3LEN      defines axis lengths.
COLOR       defines colours.
COLRAN      defines the range of colour bars.
CRVMAT      plots a coloured surface.
CURVE3      plots coloured rectangles.
CURVX3      plots rows of coloured rectangles.
CURVY3      plots columns of coloured rectangles.
ERASE       erases the screen.
GRAF3       plots a coloured axis system.
HSVRGB      converts HSV to RGB coordinates.
MYVLT       changes the current colour table.
NOBAR       suppresses the plotting of colour bars.
NOBGD       suppresses the plotting of points which have
            the same colour as the background.
NZPOSN      converts a Z-coordinate to a colour number.
POINT       plots coloured rectangles.
RECFLL      plots coloured rectangles.
REVSCR      exchanges the colours with the indices 0 and
            255.
RGBHSV      converts RGB to HSV coordinates.
RLPOIN      plots  coloured  rectangles for  user coordi-
            nates  where the  position  is defined by the
            centre point.
RLSEC       plots coloured pie sectors for user coordinates.
SECTOR      plots coloured pie sectors.
SETCLR      defines colours.
SETIND      changes the current colour table.
SETRES      defines the size of coloured rectangles.
SETRGB      defines colours.
SETVLT      selects a colour table.
VKXBAR      shifts colour bars in the X-direction.
VKYBAR      shifts colour bars in the Y-direction.
WIDBAR      defines the width of colour bars.
ZAXIS       plots linearly scaled colour bars.
ZAXLG       plots logarithmically scaled colour bars.

A.24 3-D Graphics

ABS3PT      converts absolute 3-D coordinates to plot
            coordinates.
AXIS3D      defines the lengths of the 3-D box.
BOX3D       plots a border around the 3-D box.
CONN3D      plots a line to a point in 3-D space.
CURV3D      plots curves or symbols.
FLAB3D      disables the suppression of axis labels.
GETMAT      calculates a  function matrix from randomly
            distributed data points.
GRAF3D      plots an axis system.
GRFFIN      terminates a projection into 3-D space.
GRFINI      initializes projections in 3-D space.
GRID3D      plots a grid.
MDFMAT      modifies the algorithm used in GETMAT.
NOHIDE      disables the hidden-line algorithm.
POS3PT      converts user coordinates to absolute 3-D
            coordinates.
REL3PT      converts user coordinates to plot coordinates.
SHDMOD      defines flat or smooth shading for surfaces.
SHLSUR      protects surfaces from overwriting.
STRT3D      moves the pen to a point.
SURCLR      selects surface colours.
SURFCE      plots the surface of a function matrix.
SURFCP      plots a shaded surface of a parametric
            function.
SURFUN      plots the surface of the function Z = F(X,Y).
SURMAT      plots the surface of a function matrix.
SURSHD      plots a coloured surface.
SURVIS      determines the visible part of surfaces.
VANG3D      defines the field of view.
VECTR3      plots vectors in 3-D space.
VFOC3D      defines the focus point.
VIEW3D      defines the viewpoint.
VUP3D       defines the camera orientation.
ZBFFIN      terminates the Z-buffer..
ZBFINI      allocates space for a Z-buffer.
ZBFLIN      plots lines.
ZBFTRI      plots triangles.
ZSCALE      defines a Z-scaling for coloured surfaces.

A.25 Geographical Projections

CURVMP      plots curves or symbols.
GRAFMP      plots a geographical axis system.
GRIDMP      plots a grid.
MAPMOD      modifies the connection of points used in
            CURVMP.
MAPPOL      defines the map pole used for azimuthal pro-
            jections.
MAPREF      defines two latitudes used  for conical pro-
            jections.
POS2PT      converts user coordinates to plot coordinates.
PROJCT      selects a projection.
SHDEUR      shades European countries.
SHDMAP      shades continents.
WORLD       plots coastlines and lakes.
XAXMAP      plots a secondary X-axis.
YAXMAP      plots a secondary Y-axis.

A.26 Contouring

CONCRV      plots generated contours.
CONGAP      affects the spacing between contour lines and
            labels.
CONLAB      defines a character string used for contour
            labels.
CONMAT      plots contours.
CONMOD      affects the position of contour labels.
CONPTS      generates contours.
CONSHD      plots shaded contours.
CONTUR      plots contours.
LABCLR      defines the colour of contour labels.
LABDIS      defines the distance between labels.
LABELS      defines contour labels.
SHDMOD      sets the algorithm for shaded contours.

A.27 Image Routines

IMGINI      initializes transfering of image data.
IMGFIN      terminates transfering of image data.
RIMAGE      copies an image from memory to a file.
RPIXEL      reads a pixel from memory.
RPIXLS      reads image data from memory.
RPXROW      reads a row of image data from memory.
RTIFF       stores an image as a TIFF file.
TIFORG      defines the position of TIFF files copied
            with WTIFF.
TIFWIN      defines a clipping window for  TIFF files
            copied with WTIFF.
WIMAGE      copies an image from file to memory.
WPIXEL      writes a pixel to memory.
WPIXLS      writes image data to memory.
WPXROW      write a row of image data to memory.
WTIFF       copies a TIFF file created by DISLIN to memory.

A.28 Window Routines

CLSWIN      closes a window.
OPNWIN      opens a window for graphics output.
SELWIN      selects a window for graphics output.
WINDOW      defines the position and size of windows.
WINID       returns the ID of the currently selected window.
WINMOD      affects the  handling  of windows  in the termi-
            nation routine DISFIN.
WINSIZ      defines the size of windows.
WINTIT      sets the title of the currently selected window.
X11MOD      enables backing store.

A.29 Widget Routines

DWGBUT      displays  a message  that can  be answered  with
            'Yes' or 'No'.
DWGFIL      creates a file selection box.
DWGLIS      gets a selection from a list of items.
DWGMSG      displays a message.
DWGTXT      prompts an user for input.
GETDSP      returns the terminal type.
GWGBOX      requests the value of a box widget.
GWGBUT      requests the status of a button widget.
GWGFIL      requests the value of a file widget.
GWGLIS      requests the value of a list widget.
GWGSCL      requests the value of a scale widget.
GWGTXT      requests the value of a text widget.
ITMCAT      concatenates an element to a list string.
ITMCNT      calculates  the  number  of elements  in a  list
            string.
ITMSTR      extracts an element from a list string. 
MSGBOX      prints a message. 
SWGBOX      changes the selection of a box widget.
SWGBUT      changes the status of a button widget.
SWGCB       connects a widget with a callback routine.
SWGFIL      changes the value of a file widget.
SWGHLP      sets a character string  that will  be displayed
            if the Help menu is clicked.
SWGJUS      defines the alignment of label widgets.
SWGLIS      changes the selection of a list widget.
SWGMIX      defines control characters.
SWGMOD      defines ASCII or X Window mode for widgets.
SWGMRG      defines widget margins.
SWGPOP      modifies the appearance of the popup menubar.
SWGPOS      defines the position of widgets.
SWGSCL      changes the value of a scale widget.
SWGSIZ      defines the size of widgets.
SWGTIT      sets a title for the main widget.
SWGTXT      changes the value of a text widget.
SWGTYP      modifies the appearance of widgets.
SWGWIN      defines the position and size of widgets.
SWGWTH      sets the default width of widgets.
WGAPP       creates an entry in a popup menu.
WGBAS       creates a container wdiget.
WGBOX       creates  a list widget  where the  list elements
            are displayed as toggle buttons.
WGBUT       creates a button widget.
WGCMD       creates a command widget.
WGFIL       creates a file widget.
WGFIN       terminates widget routines.
WGINI       creates  a  main widget  and  initalizes  widget
            routines.
WGLAB       creates a label widget.
WGLIS       creates a list widget.
WGLTXT      creates a labeled text widget.
WGOK        creates a OK push button widget.
WGPBUT      creates a push button widget. 
WGPOP       creates a popup menu.
WGQUIT      creates a QUIT push button widget.
WGSCL       creates a scale widget.
WGTXT       creates a text widget.

A.30 MPAe Emblem

MPAEPL      plots the MPAe emblem.
MPLANG      defines a rotation angle for the MPAe emblem.
MPLCLR      defines the fore- and background colours  of the
            MPAe emblem.
MPLPOS      defines the position of the MPAe emblem.
MPLSIZ      defines the size of the MPAe emblem.
NOFILL      suppresses the shading of the MPAe emblem.
