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Pengju Zhang


Last seen: 1 year ago |  Active since 2020

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How can fit my data by multiple damping cosine functions?
Hi there, could you please help me out to fit my data via several damping consine functions like: s(t)=A(cos(B*t)+cos(C*t))*...

3 years ago | 1 answer | 0

1

answer

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how to calculate the standard deviation of this formula?
Hi there, i got a formula sum(A.*B)/sum(B), and i know the standard deviation for matrix A and B, respectively. Then my quest...

4 years ago | 0 answers | 0

0

answers

Question


standard deviaton propagation of matrix
Hey there, i get a formula like sum(A.*B)/sum(B), in which A and B are both matrix. How can i calculate the standard deviati...

4 years ago | 0 answers | 0

0

answers

Question


How can I bin the large 2D data to the same size as the smaller one and plot them by imagesc?
Hi there, i got two 2D data, one has larger size, the other one has smaller size, how can i bin the larger one to the size si...

4 years ago | 1 answer | 0

1

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Question


ask help to do the fft on my 'untreatable' data
Hi there, anyone could help me to do the fft on my data, i tried the normal methed, it never work out... the time step is 0....

4 years ago | 1 answer | 0

1

answer