Artem Smirnov

Last seen: oltre un anno fa | Attivo dal 2016

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Domanda

Problem recovering the filtered signal using IFFT
Hello! I have geomagnetic field values, 1 value each month, for several years. What I want to do with the data is to erase yearl...

quasi 6 anni fa | 1 risposta | 0

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Domanda

How can I save ALL workspace variables?
Hello! I have 7104 .mat files, each of them has different variables inside. I was asked to transfer these matlab files to .cdf o...

oltre 6 anni fa | 3 risposte | 0

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Domanda

Something is wrong in the Fourier transform...
Hello! I have data, which are time-series of the magnetic field. It consists of 365 values per year for 8 years. I need to calc...

oltre 6 anni fa | 2 risposte | 0

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Domanda

XCORR of two harmonic signals has a triangular shape. Why?
Hello! I have two signals (H and Z), which are almost harmonic. Both vectors contain 4018 elements each (I attach the picture)....

quasi 7 anni fa | 1 risposta | 0

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Domanda

XCORR returns NaNs on interpolated data
Hello! I have a vector A of dimension 12*1 with monthly values of temperature, and a vector B of dimension 365*1 with daily val...

quasi 7 anni fa | 1 risposta | 0

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Domanda

How to compute Fourier transform of a signal?
Hello! I have three arrays of data (see the picture). There is 1 measurement every day for 11 years. I know that for fft I need...

quasi 7 anni fa | 1 risposta | 0

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Domanda

Why is not cross-correlation symmetric with respect to zero?
Hello! </p> I need to create a harmonic signal, then to add some noise and to calculate auto cross-correlation. I know that au...

quasi 7 anni fa | 1 risposta | 0

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Domanda

How to read data from txt between 2 lines with the same symbol?
* Hello! * I have a lot of .txt files (<1000 lines each). The data format is the following (the picture): there are some line...

quasi 7 anni fa | 1 risposta | 0

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Domanda

How to find files with specified filenames within a folder?
Hello. My problem is the following. I have downloaded tons of data from Intermagnet (I'm conducting research connected with mag...

oltre 7 anni fa | 1 risposta | 0

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Risposto
how to close an excel file
Try this: close all

oltre 7 anni fa | 0

Domanda

Why do subplots created in a loop disappear on a new iteration?
Hello. I am doing research for my thesis, which I have almost completed, except for one thing. I have to create a big spreadshee...

oltre 7 anni fa | 1 risposta | 0

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plot X as a function of Y
If you want to create a plot you have to write plot(y,x). What do you mean saying you want to create a 3d-plot AS a function of...

oltre 7 anni fa | 0

Domanda

How to create several subplots without tick labels in a loop?
I have got the following problem. I have several subplots within one figure, that are created in a loop. I want to get rid of th...

oltre 7 anni fa | 1 risposta | 1

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Domanda

A problem with a matrix
Hello. I am doing research connected with magnetic observatory data. I have 50 observatories and each of them produces 12 dire...

quasi 8 anni fa | 1 risposta | 0

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