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Fill in a data vector into a preallocated zeros matrix

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Sebastian Engelsgaard
回答： James Tursa 2021-1-22
Hi,
I have a vector (called v) of size
[2000004×1 double]
with data, and I want to split this into a preallocated 500001x4 matrix (called m). The data needs to be extracted cronologically meaning that v(1,1) = m(1,1) and v(500002,1)=m(1,2)
Can anyone help?

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James Tursa
James Tursa 2021-1-22
m = reshape(v,500001,4);

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