photo

Ernst Jan


Attivo dal 2013

Followers: 0   Following: 0

Messaggio

Statistica

  • Thankful Level 1
  • First Answer

Visualizza badge

Feeds

Visto da

Domanda


Performance decrease accessing elements >4-D matrix
*Introduction* I have an algorithm that loops billions (trillions) of times and manipulates a matrix stored in 7 dimensions [...

oltre 10 anni fa | 2 risposte | 1

2

risposte

Domanda


Calculating means in large matrix using logical indexing
Hi there, I have a large data matrix in which I want to calculate the average of elements satisfying certain conditions. The ...

oltre 10 anni fa | 1 risposta | 0

1

risposta

Risposto
Speed optimization of partial inner product (norm)
My results show that the first is actually faster: n = 10000; P1 = rand(1,n); tic A1 = sqrt(sum(P1.^2)); to...

oltre 10 anni fa | 0

Domanda


atand(x) very much slower than atan(x)!?
Today I used atand(x) and atan(x). To my great surprise atand(x) was not just a little bit slower than atan(x) but is incredibly...

oltre 11 anni fa | 2 risposte | 2

2

risposte