Community Profile # haeyeon JI

Last seen: alrededor de 1 año ago Active since 2020

#### Statistics

• #### Content Feed

View by

Question

Custom equation related in matlab's curve fitting tool
custom equation : z=a*x+b*log10(y+c)+d (x=M , y=D, z=ratio1) Regression analysis was performed from the above estimation eq...

alrededor de 1 año ago | 0 answers | 0

### 0

Question

How to set bounds for coefficents when curve fitting
x= (6.1,6.1,6.1,6.1,6.1,6.1,6.1,6.4,6.4,6.4,6.4,6.4,6.4,6.4,6.7,6.7,6.7,6.7,6.7,6.7,6.7,6.7,6.7,6.7,6.7,6.7,6.7,6.7) y=(10,20,3...

alrededor de 1 año ago | 1 answer | 0

### 1

Question

Make equation in Curve Fitting tool
I used the Curve Fitting tool to plot the relationship between x, y and z. Could I get the equation corresponding to the graph ...

más de 1 año ago | 1 answer | 0

### 1

Question

Options when drawing using the Curve Fitting tool
I am inputting x y z data and using 'Curve Fitting tool' to create a nonlinear regression graph. I am trying to find the coeffi...

más de 1 año ago | 1 answer | 0

### 1

Question

Options when drawing using the Curve Fitting tool
I am inputting x y z data and using 'Curve Fitting tool' to create a nonlinear regression graph. I am trying to find the coeffi...

más de 1 año ago | 1 answer | 0

### 1

Question

I want to find the coefficients for the regression equation using nonlinear regression analysis.
We want to find the coefficients for the regression equation using nonlinear regression analysis. For example M=3, 3, 3, 3, 4,...

más de 1 año ago | 1 answer | 0

### 1

Question

I want to do a nonlinear regression analysis with MATLAB.
I want to do a nonlinear regression analysis with MATLAB. For example M=1, 2, 3, 4 R=1, 2, 3, 4 And SA is the value relate...

más de 1 año ago | 1 answer | 0

### 1

Question

I try to find the coefficients of the polynomial using nonlinear regression analysis.
The variables I will enter are magnitude M, distance R, and SA values corresponding to magnitude and distance. for example, M=...

más de 1 año ago | 1 answer | 0

### 1

Question

How to extract the value of the middle point of the graph without data.
I drew a graph with a variable. x =[5 2 1 0.5 0.4 0.2 0.1 0.05 0.04 0.02 0.01] y=[0.020483611 0.140590007 0.551269003 1.46...

más de 1 año ago | 1 answer | 0

### 1

Question

i=1, 2, 3,,, However, when (a-i)> 0 is calculated.
i=1, 2, 3,,, However, when (a-i)> 0 is calculated. N, a is any positive integer, station(2+i)=(a-(a-i))*N I am trying to...

más de 1 año ago | 3 answers | 0

### 3

Question

After the FFT(Frequency-Amplitude) of the seismic wave(Time-Acceleration), I want to reconstruct the seismic wave(Time-Acceleration) by IFFT again.
First, FFT was performed using time and acceleration data. And reconstruct the seismic wave(Time-Acceleration) by IFFT again. ...

más de 1 año ago | 2 answers | 0

### 2

Question

Perform a FFT of the seismic waves, multiply the amplitude by a function, and IFFT.
I succeeded in Fourier transform using the time history of seismic waves. The code was entered as follows. Time = [0, 0.01...

más de 1 año ago | 0 answers | 0