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
|
<HTML>
<HEAD>
<TITLE>Display array data as contours and density plot</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFFF" TEXT="#000000">
<P>
Create a <code>32×32</code> array <code>Z</code>, where
<code>Z(x,y) = exp(-((x/15)^2+(y/12)^2))</code> for <code>-5 ≤ x ≤ 26</code>
and <code>-10 ≤ y ≤ 10</code>.
Display as a contour plot and as density plots.</P>
<P>
The following script will perform the desired operations:</P>
<P>
<font color="blue"><pre>
generate x -5,,26 32
generate y -10,,10 32
matrix z 32 32
do j=[1:32]
do k=[1:32]
z[k,j] = exp(-((x[j]/15)^2+(y[k]/12)^2))
enddo
enddo
window 5
contour\legend x y z 20
window 6
set colormap thermal
density x y z
window 7
density\diffusion x y z
window 8
density\dithering x y z
</pre></font></P>
<P>
<IMG SRC="BasicTasksS14I01.gif"></P>
<P>
Read <code>32×24</code> elevation data from file <a href="BasicTasksS14D01.dat">e.dat</a>.<br />
Display as a contour map and as density plots.</P>
<P>
<font color="blue"><pre>
read\matrix e.dat elevation 32 24
window 5
contour\legend elevation 15
window 6
set colormap topo256
density elevation
window 7
set colormap gray256
density elevation
window 8
density\diffusion elevation
</pre></font></P>
<P>
<IMG SRC="BasicTasksS14I02.gif"></P>
<P>
<a href="BasicTasksS13.htm"><img src="../shadow_left.gif">
<font size="+1" color="olive">Analyze data using FFT</font></a><br />
<a href="BasicTasksS15.htm"><img src="../shadow_right.gif">
<font size="+1" color="olive">Plot parametric functions</font></a></P>
</BODY>
</HTML>
|
