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size and display of N-d matrices (octave-3.4.2)
From: |
Sergei Steshenko |
Subject: |
size and display of N-d matrices (octave-3.4.2) |
Date: |
Wed, 10 Aug 2011 12:26:32 -0700 (PDT) |
Hello,
here is a screen session:
"
octave:1> a(1,1,1,1) = 1
a = 1
octave:2> a(1,1,1,2) = 2
a =
ans(:,:,1,1) = 1
ans(:,:,1,2) = 2
octave:3> a
a =
ans(:,:,1,1) = 1
ans(:,:,1,2) = 2
octave:4> size(a)
ans =
1 1 1 2
octave:5> b(1,1,1,1) = 3
b = 3
octave:6> b(2,1,1,1) = 4
b =
3
4
octave:7> b
b =
3
4
octave:8> size(b)
ans =
2 1
octave:9>
".
Questions:
1) why does 'octave' treat 'a' and 'b' differently ?
2) why 'b' is shown to have just two dimensions ?
3) why colons when 'a' is displayed ?
Thanks,
Sergei.
- size and display of N-d matrices (octave-3.4.2),
Sergei Steshenko <=