Robert

Royal Institute of Technology

Last seen: mer än 4 år ago | Active since 2011

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PhD-student working with fiber laser and amplifiers at the Laser Physics group at the Royal Institute of Technology in Stockholm, Sweden.

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Answered
How to draw an arrow using non normalized coordinates?
I wanted to do something similar, here's an example that adds a double arrow between the x-values 1 and 5 with y-values 5 in a s...

ungefär 6 år ago | 1

Question

Remidies for changed values in a vector as a result of fftshift?
Hi, While rewriting a script, I noticed that the sum of a vector changes if ifftshift/fftshift has been carried out. Take the...

mer än 8 år ago | 1 answer | 0

1

answer

Answered
Inconsistent solution from a symbolic equation?
I copied the solutions into mathematica and went through all the terms (which is a lot easier since you can display the equation...

nästan 9 år ago | 0

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Answered
Inconsistent solution from a symbolic equation?
Hi Steven, Thank you for the reply. I suppose that this function essentially does the same as checking whether aa(1)+aa(2)=0 ...

nästan 9 år ago | 0

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Inconsistent solution from a symbolic equation?
Hi, I'm solving a system of some rather lengthy equations using the solve function after setting up the equations using symbo...

nästan 9 år ago | 4 answers | 0

4

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Solved

Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

ungefär 9 år ago

Question

Peculiar behavior regarding matrix operations
Hi, I just discovered something that I found really weird when I was working with some element-wise multiplication and divisi...

mer än 9 år ago | 1 answer | 0

1

answer

Answered
oscillating phases when using fft and ifft
Hi Cindy, The use of fftshift after taking the fft is actually not the correct way of doing it (if you're starting with a fun...

mer än 10 år ago | 0

Question

oscillating phases when using fft and ifft
Hi, I noticed that I get oscillations in the phases of the fourier transform of my gaussian function and also in the inverse ...

mer än 10 år ago | 2 answers | 0

2

answers

Question

All pass filter design trouble
Hi, I´ve constructed a complementary filter that is filtering the difference between two signals. After passage through the com...

mer än 14 år ago | 0 answers | 0

0

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Question

A question about the freqz function
Hi, My name is Robert and I´m having a minor problem with the freqz function in MATLAB. I´m using it to get the frequency res...

mer än 14 år ago | 1 answer | 0

1

answer