PLOT88

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PLOT88 Function Summary The following subroutines are drawing primitives. PLOTS initializes the PLOT88 package. PLOT generates straight line segments from the current "pen" position to the specified position with the "pen" up or down. PLOTD generates straight, dashed line segments from the current "pen" position to the specified position. STDASH  defines the characteristics of a dashed line. OFFSET  defines the X & Y offset and scaling values. FACTOR  defines drawing enlargement or reduction. WINDOW  defines the location of the "drawing" window. ROTTRN  rotates and translates the drawing on the output device. WINORG  defines multiple windows to be drawn on one page. NEWPEN  specifies the line width. WHERE  returns the current (x,y) "pen" position and drawing scaling factor. COLOR  defines the color index to be applied to lines and text. PALETE  defines the color associated with the color index. The following subroutines are used to draw text and symbols. SYMBOL  draws characters and special centered symbols in two or three dimensions. ASPECT  defines the width-to-height ratio of characters drawn by SYMBOL and NUMBER. CHPATH  defines symbol character path (horizontal or vertical). GETWID  returns the length of a character string. NUMBER  converts a real number to a decimal equivalent character string and draws the string in two or three dimensions. GETNUM  converts a single precision real number to its decimal equivalent as a character string. FONT  selects a character set by its number. IBMPLX  selects the IBM character set. SIMPLX  selects the simplex character set. DUPLX  selects the duplex character set. COMPLX  selects the complex character set. TRIPLX  selects the triplex character set. SCRPLX  selects the script character set. GRKPLX  selects the Greek character set. The following subroutines are used to draw two-dimensional lines and axis. SCALE  scans an array to determine its maximum and minimum values for use by LINE, CURVE, and AXIS. LINE  a set of (x,y) points are drawn in two dimensions with optional straight lines between the points and an optional centered symbol at each point. CURVE  draws a smooth line in two dimensions between a set of (x,y) points. AXIS  draws a linear axis line with title, tic marks, and tic labels in two dimensions. STAXIS  defines the format of axis tic annotation, axis title, and tic length. STLINE  defines the line type and centered symbol characteristics used by LINE and LGLIN. SCALG  determines the logarithmic scale factors for use by LGAXS and LGLIN. LGAXS  draws a logarithmic axis in two dimensions with title, tics, and tic labels. LGLIN  draws a log-log or semi-log line in two dimensions between a set of (x,y) points. The following subroutines define and draw filled polygons. FILL  provides shading of polygonal areas. STFILL  selects the shading pattern used by FILL. DFFILL  defines the fill pattern used by FILL. The following subroutines are used prior to drawing two-dimensional contours and three-dimensional mesh "surfaces": ZGRID  performs two-dimensional (surface) interpolation to construct a grid of (x,y) points using La Placian and spline interpolation. DGRID  performs two dimensional (surface) interpolation to construct a grid of regularly spaced points using 1/(distance to a power). ZSMTH  smooths the gridded data. The following subroutines are for drawing two or three-dimensional contours with NO fill pattern between the contour lines: ZSIDE  determines if a point is inside a polygon. Used when placing title blocks inside a contour map. ZLEVEL  determines all contour levels present on a map. ZPOST  marks and labels randomly spaced data points on the contour map (two-dimensional contours only). ZCNTUR  draws the two or three dimensional surface contours based on a grid of control points. ZCSEG  draws the two or three dimensional surface contours based on a grid of control points. Divides the grid into smaller areas for more precise contouring. CCNTUR           draws the two or three dimensional surface contours based on a grid of control points and fills           the curface between the contour lines with a color/pattern. CLEGND           draws a legend of contour levels for the CCNTUR drawn surface. . The following subroutines are for controlling the drawing of three-dimensional text, axis, and contours: DISP3D  defines the drawing spatial representation (two or three dimensions). SCAL3D  defines the dimensions of the grid array in world units. SYORNT  defines the drawing angle path for text and axis. P3D2D  converts a point in three dimensions into its corresponding position on the output device. This routine is used to place annotation on the mesh surface drawing. FIT3D  defines the three-dimensional space that will fit in the output two-dimensional window. Used when drawing a three-dimensional curve. No mesh surface is drawn. AXIS3D  draws a linear axis line with title, tic marks, and tic labels in two dimensions. LINE3D  draws a line in three dimensions with hidden line processing. VISP3D  indicates if a point is visible after a mesh surface is drawn. The following subroutines are for drawing three-dimensional mesh "surfaces": MESH  defines the three-dimensional to two-dimensional transform and draws the three-dimensional mesh surface based on the grid of control points. No subgridding is performed. MESHS  defines the three-dimensional to two-dimensional transform and draws the three-dimensional mesh surface based on the grid of control points. Each grid square is subsectioned to produce 2, 4, 8, or 16 mesh lines. MESH4  draws a four dimensional mesh surface. The fourth dimension is shown as color on the surface. No subgrdiding is performed. MSQUAL  defines the mesh surface line quality for plotter output. MESHCI  defines the two color indexes used in drawing the mesh surface top and underside. MSHCOL  defines the color contouring intervals used in drawing a mesh surface. The following subroutines are used by the print spooler under Windows 95, 98, 2000, or  NT to control the print output. UsePrinter88  defines the printer to receive the PLOT88 output. JobTitle88  assigns a title to the drawing in the print spool queue.