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Topic: I'm dense, but...somebody 'splain accumarray() please?
Replies: 23   Last Post: Jul 11, 2013 1:00 PM

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dpb

Posts: 8,186
Registered: 6/7/07
I'm dense, but...somebody 'splain accumarray() please?
Posted: Jul 5, 2013 3:42 PM
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I've only relatively recently acquired recent-enough release to have
accumarray(). Despite my efforts the documentation for it seems to
remain totally opaque to me.

So,

a) Anybody know of any more detailed tutorial/description than that of
the online doc's? Mayhaps the old dog could eventually learn the new
trick w/ another bone to chase, and

b) I was trying to build an index array of the vector 1:k, w/ each row
1:n being one greater than that in the preceding row. I brute-forced it
w/ repmat() and cumsum() but seems like accumarray ought to be the tool.
But, all my efforts were totally unsuccessful (and for the most part I
couldn't even precisely decipher why got what did get)...

So, how to build the following, say...

[1 2 3; 2 3 4; 4 5 6; ...]

?

--


Date Subject Author
7/5/13
Read I'm dense, but...somebody 'splain accumarray() please?
dpb
7/5/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
dpb
7/6/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
james bejon
7/8/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
Steven Lord
7/8/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
dpb
7/9/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
Steven Lord
7/9/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
dpb
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
Marc
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
Kim Andrews
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
dpb
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
dpb
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
dpb
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
EBS
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
dpb
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
EBS
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
dpb
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
Kelly Kearney
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
dpb
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
dpb
7/11/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
Kelly Kearney
7/11/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
dpb
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
Kelly Kearney
7/10/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
dpb
7/11/13
Read Re: I'm dense, but...somebody 'splain accumarray() please?
Steven Lord

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