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Damiano Capocci


Last seen: 3 years ago |  Active since 2017

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Question


Peak "coordinates of a histogram
Hi, I want to study the histogram of an array. This array has only one peak, I want to determine the bin related to the peak. I ...

5 years ago | 2 answers | 0

2

answers

Question


Spectral test for Random Number Generator
Hi, does it exist a way to test the lattice structure of a congruential random generator using fft ? Or a code/function here on ...

6 years ago | 0 answers | 0

0

answers

Question


Runstest: a good interpretation
I've found this thing: I generate 100000 random numb through rand but sometimes the null hypotesis is rejected. For see this ...

6 years ago | 0 answers | 0

0

answers

Question


Runstest and corrcoef : difference and problems
Hi. I have noticed that if i use rand() function to generate for example 2*10^6 numbers and then *i evaluate the correlation coe...

6 years ago | 0 answers | 0

0

answers

Answered
Determining optimal number of bins for chi squared distribution
More you have, better will be. if you have a great number of data you can go far with stand deviations because you will always h...

6 years ago | 0

Question


A good way to test uniform random number
Hi, i have got some generators i need to test. These produce uniform random numbers. I found only corrcoef() and runstest() are ...

6 years ago | 1 answer | 0

1

answer

Question


Complex numbers in ifft(fft(x))
Hi, i want to realize a convolution through fft and i also want to compare the time required for this process between gpu and cp...

6 years ago | 2 answers | 0

2

answers

Question


P value of corrcoef() is aways different !
Hi, in my tests i've introduced Matlab corrcoef(). But if i repeat this test i'm used to obtain different results for p value. T...

6 years ago | 1 answer | 0

1

answer

Question


How to use a Mupad function in Matlab workspace
Hi, i want to use the function numlib::igcdmult because my aim is to apply the extended euclid algorithm for multiple argume...

6 years ago | 1 answer | 0

1

answer

Question


Arrayfun - problem with input array
I've found this kind of problem: clear all; a=[3,7,9,5,11,2]; b=[1,2,3,4,5,6]; l=[1,0,0,0,0,0]; f=@(x,z,y) x*l(...

6 years ago | 1 answer | 0

1

answer

Question


Efficient self-referential loop using GPU
I have lots of problems using for in GPU computing becuse it take a huge amount of time (as u know). My kind of loop is particul...

6 years ago | 1 answer | 0

1

answer

Question


Strange values in convolution (using FFT through gpu)
I want to realize a code in which i use the convolution for GPU computing. So I'm studying all the characteristics of convulutio...

7 years ago | 0 answers | 0

0

answers

Question


A self assignment from scalar product
Hi there, i want to have a variable x which is involved in a scalar product with another vector but the result becomes an elemen...

7 years ago | 0 answers | 0

0

answers

Question


Vectorization for dependent loops
Hi i want vectorize this code : a(1)= 1 ; for g=1:len_1 % len_1 >> len_2 for c=0:min(g-1,len_2...

7 years ago | 0 answers | 0

0

answers

Question


Arrayfun - for conversion
I want to replace for loop with arrayfun but i don't have idea. In this case there is a particular dependence the two foor's. Ev...

7 years ago | 0 answers | 0

0

answers

Question


Arrayfun for a particukar nested loop in GPU computing
Hi i've this situation (CPU): X(1)= first_step; for k=1:length_1 for p=0:min(k-1,length_2) X(k+1)=X(k+1)+j(p+1...

7 years ago | 0 answers | 0

0

answers

Question


Vectorizing for loops - an efficient way to do it
Hi, i want to know how should i vectorize two loops like this: length=100000; limit=8; j=primes(9000); j=j(randp...

7 years ago | 0 answers | 0

0

answers

Question


Comparison for/vectorization- some general advice
Hi, i'm trying to vectorize my code. But i have recently found this: clear all; tic k=zeros([1,10000]); a=1:1000...

7 years ago | 1 answer | 0

1

answer

Answered
avoid negative index in array or matrix
Yes, all of u are right in particular david, my code is a bit complex so i've tried to explain the question giving the idea of m...

7 years ago | 0

Question


avoid negative index in array or matrix
I'm working on 2 loops in which i have the difference of two indices like this: for i=1:interval_1 for j=0:interval_2 ...

7 years ago | 3 answers | 0

3

answers

Question


Multiple input delay block (simulink)
I need more inputs for delay block, how should i do?

7 years ago | 1 answer | 0

1

answer

Question


Is there in Matlab a test for random numbers?
Hi, i'm working on RNG, for this reason i've to test my results. Is there any test in a toolbox? I'm looking for something like ...

7 years ago | 1 answer | 0

1

answer

Question


Does it exist function for a Simulink model related to time (more or less like 'now') ?
I'm working on a FPGA project, i want to have a function which gives values related to time (current). Unfortunately "now" is no...

7 years ago | 1 answer | 1

1

answer

Question


Does it exist a function which is similar to time() function of C ambient ?
Hi, i'm working with random number generation, I would like to know if exists, in Matlab, a function like time(0) of C ambient (...

7 years ago | 2 answers | 0

2

answers

Question


Obtaining all zeros from rand
Hi, i'm working with rand but when i do x(1,9)=rand the vector x has the first eight components are always equal to zero, in par...

7 years ago | 1 answer | 0

1

answer

Question


Campus License - Sapienza Università di Roma
May you tell me when Campus License will be activated? I need MatLab latest version for my lab project in particular for the FPG...

7 years ago | 1 answer | 0

1

answer