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**Content Feed**

How can I plot a relative frequency histogram in Matlab?

@Eric Bernard Dilger, The overlapping bars in the plot abve are potentially confusing to the viewer. Therefore I added some co...

1 month ago | 1

How can I plot a relative frequency histogram in Matlab?

@Eric Bernard Dilger, Matlab's histogram() command is nice. Attached script shows how you could use it. It produces the plot be...

1 month ago | 1

| accepted

What are the option for probabilistic forecast in Matlab for energy forecasting?

@israt fatema, Matlab has many excellent tools for prbabilistic forecasting. A baseline of knowledge is needed...

1 month ago | 0

| accepted

Finding multiple x-intercepts for a dataset

@Jacob Hohsfield, You said you have a 2D dataset. If you mean the spectrogram, the time dependent Fourier transform, then find...

1 month ago | 1

Finding multiple x-intercepts for a dataset

@Jacob Hohsfield, Matlab has a very nice peak finding function, findpeaks(), help here: It has nice options, including thresho...

1 month ago | 1

| accepted

Maximize objective function using fmincon with a limit

@Angel Ani Create the following function and save it as file parameterfun.m: function y=parameterfun(x,U,V,y1,y2) y=-((U*y1 -...

1 month ago | 0

| accepted

data fitting with custom equation

@Somnath Kale Here is code that fits w and t1 as you requested. For a starting guess [w,t1]=[1,1], the console output and plot ...

1 month ago | 0

| accepted

Question

why does this integral fail?

I created an anonymous function. fun=@(x,t,A,w,t1) (A*w/pi)*(1-exp(-(t/exp(x))^2))/((x-log(t1))^2+w^2) It gives reasonable r...

1 month ago | 1 answer | 0

### 1

answerdata fitting with custom equation

@Somnath Kale What is the value of A? Am I correct to understand that the variable of integration is log t0, and it varies fr...

1 month ago | 0

How to code an instantaneous reaction in Matlab

@Robert Demyanovich, Here is a simulation. Figure 1 shows the concentration profiles at specific time points. The simulation s...

2 months ago | 0

| accepted

Unknown angles as functions of time

@Dario Saracchi, You can do some algebra before you do some code. Define some constants: d=AB*cos(alfa)-AC*cos(delta) e=AB*si...

2 months ago | 0

| accepted

How to code an instantaneous reaction in Matlab

@Robert Demyanovich, Do you expect to end up with a partial differential equation, as expected for diffusion? Of course the 1...

2 months ago | 2

Problem/question with regression

You need at least one more data point to do a standard regression, so that you have more equations than unknowns. Even with mor...

2 months ago | 1

| accepted

Frequency sweeping in a sinusoidal signal

@Nneka Onubogu, You can initialize the vectors p, x, and y before the loop as follows: dt=4e-6; %(s) fs=1/dt; %(...

2 months ago | 0

| accepted

line calculations using its known coordinates

Suppose slope of line 1 is a1 and slope of line 2 is a2. Then angle of line 1 relative to x axis is theta1=arctan(a1) and angle ...

2 months ago | 0

Removing baseline drift from EOG signal

@Mahsa Rm, The initial posting of your question did not include the data file or the figure - at least I did not see them. That ...

2 months ago | 0

Removing baseline drift from EOG signal

@Mahsa Rm, A high pass filter is usually the solution. You need to specify the cutoff frequency. Oscillaitons below the cutoff...

2 months ago | 0

Frequency sweeping in a sinusoidal signal

@Nneka Onubogu, Thak you for reformatting the code part of your original post. The original post asks how do I do a chirp from...

2 months ago | 0

Frequency sweeping in a sinusoidal signal

@Nneka Onubogu, If you highlight your code in your posting, and then click the "code" icon at the top of the pane, it will form...

2 months ago | 0

Estimation of NegEntropy in MATLAB

@Marimuthu Ananthavelu and @Smriti Thakur, Here is code to estimate the entropy and negentropy of time domain signal, y. In thi...

2 months ago | 0

How to do estimate Non-gaussianity using Negentropy?

@Maria Amr, I figured it out. Here is an example of a signal y, and how to calculate its entropy (Hent) and its negentropy (J)...

2 months ago | 1

Estimation of NegEntropy in MATLAB

@Marimuthu Ananthavelu and @Smriti Thakur, pentropy(), in the SIgnal Processing Toolbox, computes the entropy of a signal's pow...

2 months ago | 0

How to do estimate Non-gaussianity using Negentropy?

@Maria Amr, You will find several questions and answers about negentropy if you search Matlab Answers for negentropy. Negentro...

2 months ago | 1

| accepted

Want to take a section of a curved line between 2 points

@katherine keogh, interp1(x,y,xq,method) will interpolate in a smooth way. See the help for it here. You tell it the known x'...

2 months ago | 0

2D mass spring damper square lattice

@Muhammad Ali, The system in the image you attached is obviously a lot more complicated. Masses m1 and m3 have 6 attached eleme...

2 months ago | 1

| accepted

Plotting Sinusoidal Wave Graph on MatLab

@cikalekli, Start by figuring out a good time range. Since you have cos(1256t-pi/4), the period is , so let's plot for two peri...

2 months ago | 1

| accepted

Upsampling by a non-integer number

@Malahat Mehraban, If you search "resample" on this site, you will see the question has been answered multiple times. For exam...

2 months ago | 2

| accepted

How to find closest point in plane to another point? Matlab solution

@Sue Swenson, A plane can be described by This plane has normal vector . Suppose is a given external point. Find the poi...

2 months ago | 1

Plomb function improvements with taper

@J E, I recommend this paper https://iopscience.iop.org/article/10.3847/1538-4365/aab766/pdf especially sections 7 and 8. The...

2 months ago | 0

2D mass spring damper square lattice

@Muhammad Ali, The equation of motion for a M-S-D system may be written as where is a position vector, is frictional drag,...

2 months ago | 0