Problem 589. Matrix indexing with two vectors of indices
Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).
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Indexing I
- 27 Problems
- 236 Finishers
- Piecewise linear interpolation
- Longest run of consecutive numbers
- Construct an index vector from two input vectors in vectorized fashion
- Getting the indices from a matrix
- First non-zero element in each column
- Return unique values without sorting
- Return a list sorted by number of consecutive occurrences
- intersection of matrices
- Generate N equally spaced intervals between -L and L
- Check if number exists in vector
- Replicate elements in vectors
- We love vectorized solutions. Problem 1 : remove the row average.
- intersection of matrices
- Generate N equally spaced intervals between -L and L
- Create logical matrix with a specific row and column sums
- Return a list sorted by number of consecutive occurrences
- Replicate elements in vectors
- Get the elements of diagonal and antidiagonal for any m-by-n matrix
- Getting the indices from a matrix
- Check if number exists in vector
- Fill a zeros matrix
- Set the array elements whose value is 13 to 0
- Construct an index vector from two input vectors in vectorized fashion
- Joining Ranges
- Remove the two elements next to NaN value
- Reindex a vector
- Longest run of consecutive numbers
- Put two time series onto the same time basis
- Getting logical indexes
- Matrix indexing with two vectors of indices
- middleAsColumn: Return all but first and last element as a column vector
- Return elements unique to either input
- "Low : High - Low : High - Turn around " -- Create a subindices vector
- Return unique values without sorting
- Find the largest value in the 3D matrix
- Specific Element Count
- First non-zero element in each column
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