- #1
jaobyccdee
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I have a 8000x600 Matrix called V. How can i add the colume 1,5,9,13,17... (all colume of (4*i+1) for i from 0 to 149) of the vector?
Matlab- summing of vectors in a matrix
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SUMMARY
The discussion focuses on summing specific columns of an 8000x600 matrix in MATLAB. The user aims to sum columns indexed by the formula (4*i+1) for i ranging from 0 to 149. The solution provided utilizes MATLAB's indexing capabilities, specifically creating an index vector 'i' and applying it to the matrix 'V' to compute the sum using the command 'sum(V(:,i)')'. This method efficiently aggregates the desired columns in a single operation.
PREREQUISITES- Familiarity with MATLAB syntax and matrix operations
- Understanding of matrix indexing in MATLAB
- Basic knowledge of vector arithmetic
- Experience with MATLAB's built-in functions like 'sum'
- Explore advanced MATLAB indexing techniques
- Learn about vectorization in MATLAB for performance optimization
- Investigate MATLAB's matrix manipulation functions
- Study the implications of large matrix operations on memory usage in MATLAB
Mathematics students, data analysts, and engineers who utilize MATLAB for matrix computations and require efficient methods for summing specific columns in large datasets.
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