1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
This directory contains a few examples of using jgraph to draw figures.
They range from relatively simple to quite complex.
I can't claim that jgraph is a better way to draw pictures than normal
WYSIWYG editors like MacDraw or xfig or idraw. However, it has a few
advantages. First, because of jgraph's string justification and rotation
commands, jgraph plots text more reliably than other tools. Since you
must specify exact points with jgraph, arrows are guaranteed to go to
the right places and so on. Although it's more cumbersome, it is also
more precise.
Second, because jgraph is essentially a programming language, it makes
it easier to use tools like awk and nawk and sed to draw pictures which
have iterative structure. This is a failing of most WYSIWYG editors.
Drawing a picture like those in tree.awk would be quite difficult and
tedious in your standard WYSIWYG editor.
The files are: from simplest to most complex:
---- Straight jgraph files
mlti.jgr -- A graph plotting a simple multicomputer incterconnection
timeline.jgr -- A graph plotting a time line of three computers
sending messages to one another
wedmap.jgr -- A map made with jgraph
---- Jgraph mixed with awk/nawk/sh
tree.awk -- This is an nawk file which will create a jgraph for any
m-level n-ary tree, where m and n are specified in the
command line arguments
grtoj.sh -- This is a shell script mixed with nawk written by Adam
Buchsbaum at Princeton which is a jgraph preprocessor
for drawing graphs (the kind with nodes and edges, not
the kind with points and hash marks). He hasn't written
up a man page for it, but you can see how much of it works
with the example file grex.gtj.
diskarray.jgr -- This is a jgraph file which shows a very neat mixture
of jgraph and awk. First, there is the file convert.awk,
which takes a jgraph file, and converts it into an awk
file. This awk file takes as input a pair of x and y
coordinates on the command line arguments, and then
produces the jgraph to plot the original jgraph file
at those coordinates in the new jgraph file. In this
file, disk.jgr is plotted 6 times to make a disk array.
ckpov.jgr -- This is a similar jgraph file, which uses the more complex
file srm.jgr, depicting a computer screen to make a nice
picture.
seq.jgr
conc.jgr
cow.jgr
cll.jgr
alg.jgr -- These are all files which comprise alg.jgr. Note that
they are standalone pictures. Alg.jgr simply plots all
of them together. Thus they show a neat way that jgraph
makes it easy to not duplicate work when duplicating pictures.
|
