Zeroing the start of my vectors with a for loop

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Daniel
Daniel 2015-11-12
编辑： Stephen23 2019-6-19
Hello, I have 6 vectors. Gauge1, Gauge2, Gauge3...Gauge6. They do not all start with a 0. So I want to reset each vector with a for loop.
for i=1:6
Gauge(i)=Gauge(i)-Gauge(i)(1);
end
So it should subtract all numbers in the vector with the first number in the vector...
But I get this from matlab ------ ()-indexing must appear last in an index expression. ------
What should I change. Thank you

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dpb
dpb 2015-11-12
编辑：dpb 2015-11-12
"I have 6 vectors. Gauge1, Gauge2, Gauge3..."
Don't name variables this way!!!! See the FAQ for why not: Avoid using the eval function
As you see, you can't address these variables easily as Matlab can't interpret variable names dynamically for ordinary arrays. Instead create a single array gauges of size [N,6]. Then the above operation becomes trivial--
gauges=bsxfun(@minus,gauges,gauges(1,:));
See
doc bsxfun % for details on the singleton expansion to subtract the one row from the rest

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Stephen23
Stephen23 2015-11-13
编辑：Stephen23 2019-6-19

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