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Matthew Kehoe


Last seen: 9 dagar ago |  Active since 2020

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Change the hot colormap so that the default value of 1 is white
Inside my Matlab code I am using the hot colormap in order to produce plots of the calculated reflectivity. Example 1: Subset o...

ungefär 2 månader ago | 2 answers | 0

2

answers

Question


Applying vectorization techniques to speedup the performance of dividing a 3D matrix by a 2D matrix
I'm working on removing a for loop in my Matlab code to improve performance. My original code has one for loop (from j=1:Nx) tha...

3 månader ago | 3 answers | 0

3

answers

Question


Efficient way to multiply a vector of size (Nx,1) with a matrix of size (Nx+1,Nx+1)
My code repeatedly computes a vector of size (Nx,1) by a matrix of size (Nx+1,Nx+1): clc; clear all; Nx = 32; a = 1.5; b = 2...

3 månader ago | 1 answer | 0

1

answer

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Improving the performance of matrix multiplication and division with nested for loops
My Matlab code has a section of code which repeatedly performs matrix multiplication and division (through the backslash operato...

3 månader ago | 1 answer | 0

1

answer

Question


How to store and reuse coefficients in a for loop
My Matlab code has a subroutine that repeatedly executes a double for loop. While testing large simulations, this subroutine is ...

3 månader ago | 2 answers | 0

2

answers

Question


Improve the speed of nested for loops through vectorization or similar methods
My Matlab code has a function that is called 10^3 - 10^7 times. I'm curious if I can improve the speed of the function through v...

3 månader ago | 1 answer | 0

1

answer

Question


Improving the speed of a double for loop through vectorization or changing summation indices
I'm writing a double for loop that computes a Pade summation subject to specific coefficients and parameters. I'm curious if the...

3 månader ago | 1 answer | 0

1

answer

Question


Suggestions for vectorizing double/triple for loops in Matlab
My Matlab code has multiple double/triple for loops which I believe cause a bottleneck when the index summation variables reach ...

3 månader ago | 1 answer | 0

1

answer

Question


How to implement polyval in more than one dimension when the summation includes complex coefficients
My problem involves the following double summation where are complex coefficients, and are positive constants. I think that...

mer än ett år ago | 1 answer | 0

1

answer