SET_PLOT, 'PS'

note

Please keep the following points in mind: Unlike monitors where white is the most visible color, PostScript writes black on white paper. Setting the output color index to 0, the default when PostScript output is selected, writes black. A color index of 255 writes white which is invisible on white paper. Color tables are not used with PostScript unless the color mode has been enabled using the DEVICE procedure. See below for information on using PV‑WAVE with color PostScript. All PostScript printers impose a limit on the number of vertices a polygon may contain. This limit (750 vertices for most printers) is checked, and an error message is printed if it is exceeded. Use INFO, /Device to view the driver’s current settings. PostScript hardware fonts can be rotated and transformed by general 3D transforms in PV‑WAVE.

!FB—Switch to the bold face of the current font.

!FI—Switch to the italic face of the current font.

!FU—Underline the current font.

!FN—Switch to the normal form of the current font.

!Pxx—Switch to point size xx of the current font, where xx is a two digit integer (01-99).

DEVICE, /Helvetica, /Bold

If the file is already open (as happens if plotting commands have been directed to the file since the call to SET_PLOT), then the file is completed and closed as if Close_File had been specified.

The specified file is opened for subsequent graphics output.

Figure B-1: Xoffset and Yoffset Keyword Use

DEVICE, Set_Fontmap='5 Helvetica-Oblique, 16' 

DEVICE, /Inches, Xsize=7.0, Scale_Factor=0.5

DEVICE, /Inches, Ysize=5.0, Scale_Factor=0.5

Set !P.Font to 0 by entering:

!P.Font = 0

Use the Font keyword with the plotting and graphics procedures to specify font 0. For example:

PLOT, temps, Title='Average Temp', Font=0

!A—Shift above the division line.

!E—Shift up to the exponent level and decrease the character size by a factor of 0.44.

!MX—Insert a bullet character.

!N—Shift back to the normal level and original character size.

!B—Shift below the division line.

!I—Shift down to the index level and decrease the character size by a factor of 0.44.

!!—Display the ! symbol.

DEVICE, /Color

A(WHERE(A EQ 0B)) = 255B

; Select the PostScript driver.

SET_PLOT, 'PS'

; Use ENCAPSULATED because output is for use with LATEX.

DEVICE, /Encapsulated, Filename='pic1.ps'

x = FINDGEN(200)

; Plot the sine wave. Set the font to hardware font.

PLOT, 10000 * SIN(x/5) / EXP(x/100), Linestyle=2, $
Title='PV-WAVE ' + 'PostScript plot', $
Xtitle='Point Number', Ytitle='Y Axis Title', Font=0

; Add the cosine.

OPLOT, 10000 * COS(x/5) / EXP(x/100), Linestyle=4

; Annotate the plot.

XYOUTS, 100, -6000, 'Sine', Font=0 

; Annotate the plot

OPLOT, [120, 180], [-6000, -6000], Linestyle=2

; Annotate the plot

XYOUTS, 100, -8000, 'Cosine', Font=0

OPLOT, [120, 180], [-8000, -8000], Linestyle=4

Figure B-2: Sample PostScript Plot

SET_PLOT, 'PS'

DEVICE, /Encapsulated, Filename='pic4.ps'

; Open image file.

OPENR, 1, !Dir+'/data/mandril.img'

; Variable to hold image.

a = BYTARR(256, 256, /Nozero)

; Input the image.

READU, 1, a

; Done with the file.

CLOSE, 1

; Output the image four times.

FOR i = 0,3 DO BEGIN

; Use 1, 2,4, and 8 bits per pixel.

DEVICE, Bits_Per_Pixel=2^i

; Output using TV with position numbers 0, 1, 2, and 3.

TV,a,i ,Xsize=2.5, Ysize=2.5, /Inches

ENDFOR

Figure B-3: 1, 2, 4, and 8-bit PostScript Images

% Insert a PostScript plot made by PV-WAVE 

% into a LATEX document: 

% For the ArborText program dvips.

%

% This macro creates a captioned figure

% of the specified size and uses the 

% \special command to insert the Post

% Script.

%

% Usage: \insertplot{file}{caption}

% {label}{width}{height} 

% file = name of file containing the PostScript.

% caption = caption of figure

% label = latex \label{} for figure to

% be used by \ref{} macro.

% width = width of figure, in inches.

% height = height of figure, in inches.

% 

% Insert a plot.

\newcommand{\insertplot}[5]{%

% Usage: \insertplot{file}{caption}

% {label}{width in inches}{height}

\begin{figure}%

\hfill\hbox to 0.05in{\vbox to #5in{\vfil%

\inputplot{#1}{#4}{#5}%Include the plot

% file 

}\hfill}%

\hfill\vspace{-.1in}% Fudge factor to 

% tighten things up a bit. 

\caption{#2}\label{#3}

\end{figure}}

%

%

% Include a PostScript File, this varies 

% according to the DVI program: Usage:

% \inputplot{filename}{width}{height}

% When called from insertplot, the current

% position is at the bottom CENTER of the

% figure box.

\newcommand{\inputplot}[3]{%

% Output PostScript commands to scale 

% default sized (7 wide by 5 high) PV-WAVE

% plot into the specified size. Also

% set origin to the current point less

% half the width of the box, centering the

% box above the current point.

\special{ps:: gsave #2 -36 mul 0 rmoveto 
currentpoint translate #2 7.0 div #3 5.0 
div scale}%

\special{ps: plotfile #1}\special{ps::grestore}}

%

%