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fill part of vector

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yousef Yousef
yousef Yousef 2014-4-9
评论： dpb 2014-4-9
I have a=[1 2 5 4 2 7 4 8 2 3](10 values),b=[0 1 2 3],I want to fill a so that
a=[0 1 2 3 0 0 0 0 0 0],

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采纳的回答

dpb
dpb 2014-4-9
There's nothing left so there's no point in doing anything except sotoo--
a=0; a(1:length(b))=b;
a=[b zeros(1,length(a)-length(b)];
An essentially innumerable ways to get there, choose one and go on.
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dpb
dpb 2014-4-9
so fix the typo of I forgot that '0' is a scaler and won't fill...
a=zeros(size(a)); a(1:length(b)=b;
surely that's not too tough.
yousef Yousef
yousef Yousef 2014-4-9
its perfect.Thanks a lot

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更多回答（1 个）

yousef Yousef
yousef Yousef 2014-4-9
assume I have d=[1 3 5 6 7 8 1 4 5 10],e=zeros(5,10),I want to take only the first 4 elements of d and fit them to the first row of e
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dpb
dpb 2014-4-9
Basically the same thing--just use colon operator to address the elements of concern ensuring the LHS and RHS have same length of subscripting.
All of these kinds of operations are in the "Getting Started" section of the documentation under array addressing. I suggest working thru those early sections and the exercises/examples therein to get the basics down.

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