How to find the gradient of a curve at a specific point?

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Pramodya Wijesinghe
评论： Pramodya Wijesinghe 2017-9-15

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Jose Marques
Jose Marques 2017-9-9
If the data is in the variable "data", you find the gradient like this:
grad = zeros(size(data))
for i=1:(size(data,2)-1)
grad(i) = data(i+1)-data(i);
end

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