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| Syntax |
avsurface(plotName, color source) |
"/" then
the graph is created in the root directory, otherwise
the value of plotName must be a valid group
name such as "/SurfacePlots".
avput({[1, 2], [3, 4]}, "/x")
avsurface("/SurfacePlots", "/x");
The Data Visualizer will create the following graph
avput command. This enables the creation
of animations and iterative data analysis. If you run
the following script
clear
# total time, g(t1, t2) is "small" for |(t1, t2)| > T / 2
T = 4.
N = 512
dt = T / N
df = 1 / T
t = (seq(N) - N / 2 - 1) * dt
alpha = 5.
h = exp( - alpha * abs(t))
g = fillcols(h, N) % fillrows(h', N)
# the continuous transform of g(t1, t2) is given by
# G(f1, f2) = H(f1) * H(f2)
# where H(f) = 2 * alpha / ((2 * PI * f)^2 + alpha^2)
# is the discrete transform of g
G = real(fft2d(complex(g))) * dt * dt
D = maxs(G) - mins(G)
pPath = "/O-Matrix Surface/"
avput(log(G), [pPath,"log(G)"])
avsurface([pPath,"Log 2D fft"], [pPath,"log(G)"])
for i = 1 to 6 begin
M = log(G) + (rand(N,N)*i)/5.
avput(M, [pPath,"log(G)"])
avpath(["graph:",pPath,"Log 2D fft"])
sleep(1)
end
