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How can I append a leading or trailing column to an existing array? [message #51353]

Thu, 16 November 2006 13:22

willettk
Messages: 20
Registered: October 2006

Junior Member

G'day,

I'm looking for a quick (ie, one-line method) of appending a column
vector to an existing array. As a simple example I would like to make:

1 1
1 1

into

2 1 1
2 1 1

I can think of a few ways to do it (one is listed below), but I would
really like to do it using array concatenation. I've read a good
tutorial about it at Coyote's website, but can't figure out the proper
bracketing. Any ideas?

My way:

a = [ [1,1], [1,1] ]
b = [2,2]
c = intarr[3,2]
c(0,*) = b
c(1:2,*) = a

(there must be a better way . . . )

-thanks,
kwill

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How can I append a leading or trailing column to an existing array?

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