The DESL system is frequently used to produce PostScript graphic output - plots - and a facsimile of one typical plot is displayed below. This type of plot is produced by the pubplot DESL command.
A gallery of example plots and equivalent downloadable DESL input files are available.
Overlaid on this plot example are definitions of parts of the plot in a red font. Much of the terminology used in these definitions is the same as in the pubplot documentation proper itself. The plot facsimile shown is a single plot-per-page plot. It is possible, using the pubplot DESL command, to produce a page containing an unlimited number of plots per page.
(Clicking on the key area in the plot below will bring up an enlarged version of a key.)
In the above image, the key area is selectable to get to an enlarged key image with more explanation.
For completeness, as well as serving to indicate what is involved in setting up a DESL input file necessary to produce the plot above, the input file itself is presented below. DESL options are presented in a red font. Options define command-associated attributes. Here, these options define aspects of the plot to be produced :
pubplot
scale .6 translate 2 3 plotfile PF
files r10 r11 r12
x alpha y cd
xmin -5 xmax 8
xdelta 1 xcomp .8
ymin 0 ymax .16
ydelta .01 ycomp .8
psort alpha rep 2
symbols 1 2 3
lines 1 2 3
key 301 5.9 3.7 run mach
xlabel ?$41a$11, deg?
ylabel C$DD
hzero 0 2
vzero 0 2
text center bottom
?Variation of Drag Coefficient with Angle of Attack?
grid
plot
go
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