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Interpolating Data in 2D Mesh or Surf Plot?

@Sees, [edit: I hit Submit belfore I was done] You say you want to interpolate z values at the points where z=0, and you want...

Interpolating Data in 2D Mesh or Surf Plot?

@Sees, [edit: I hit Submit belfore I was done] You say you want to interpolate z values at the points where z=0, and you want...

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How to use pwelch for PSD?

@Tran, See my recent reply to @vo, here, regarding the use of Welch's method for EEG analysis. You can get identical results ...

How to use pwelch for PSD?

@Tran, See my recent reply to @vo, here, regarding the use of Welch's method for EEG analysis. You can get identical results ...

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PSD with Alpha(8-13HZ)

@vo, [edit: replace 8 with flo and 12 with fhi in the code to compute vector fA.] The data file you gave is a structure. The ...

PSD with Alpha(8-13HZ)

@vo, [edit: replace 8 with flo and 12 with fhi in the code to compute vector fA.] The data file you gave is a structure. The ...

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Least Squares method code

@A, [edit: I adjusted the fprintf() lines to produce better output.] X = [0.8; 1.4; 2.7; 3.8; 4.8; 4.9]; Y = [0.69; 1.0; 2...

Least Squares method code

@A, [edit: I adjusted the fprintf() lines to produce better output.] X = [0.8; 1.4; 2.7; 3.8; 4.8; 4.9]; Y = [0.69; 1.0; 2...

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Get envelope of a cyclic curve

@Nikesh Maharjan, Use convhull() to find the smallest convex shape that wraps around the points. See code below. data=xlsread...

Get envelope of a cyclic curve

@Nikesh Maharjan, Use convhull() to find the smallest convex shape that wraps around the points. See code below. data=xlsread...

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Find the max psd

@vo, [This answer is a copy of my comment above. I intended my comment to be answer, but I posted it in the wrong place.] I a...

Find the max psd

@vo, [This answer is a copy of my comment above. I intended my comment to be answer, but I posted it in the wrong place.] I a...

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How to catalogue a dataset during different stages of data filtering?

@Carter Hoffman, Here is an example. data1=randn(1000,5); %1000x5 array of random numbers size1=data1(:,5); ...

How to catalogue a dataset during different stages of data filtering?

@Carter Hoffman, Here is an example. data1=randn(1000,5); %1000x5 array of random numbers size1=data1(:,5); ...

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how to ues t_tide

@ke, the t_tide package includes may functions including t_tide.m. The code for t_tide.m has extensive comments describing its ...

how to ues t_tide

@ke, the t_tide package includes may functions including t_tide.m. The code for t_tide.m has extensive comments describing its ...

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How to plot the diffusion curve for different timesteps?

@Emily, I assume this is 1D diffusion, and you want to plot concentration versus position at t=0, t=500, t=1000, ... Before y...

How to plot the diffusion curve for different timesteps?

@Emily, I assume this is 1D diffusion, and you want to plot concentration versus position at t=0, t=500, t=1000, ... Before y...

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third-order Newton’s interpolating polynomial

@ِAbo Alqahtani, Here is the start of a solution. You will learn a lot more about Matlab by finishing it yourself. Good luck...

third-order Newton’s interpolating polynomial

@ِAbo Alqahtani, Here is the start of a solution. You will learn a lot more about Matlab by finishing it yourself. Good luck...

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Extract of data for the last time step

@University Glasgow, Please post the simplest possible code example that illustrates the issue you have. When you include code, ...

Extract of data for the last time step

@University Glasgow, Please post the simplest possible code example that illustrates the issue you have. When you include code, ...

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How to plot a cylinder from a specified axis

@Telema Harry, r = 20; p0=[25,25,0]; %base location [X,Y,Z] = cylinder(r); h = 80; Z = Z*h; X=X+p0(1); Y=Y+p0(2); Z=Z+p0(...

How to plot a cylinder from a specified axis

@Telema Harry, r = 20; p0=[25,25,0]; %base location [X,Y,Z] = cylinder(r); h = 80; Z = Z*h; X=X+p0(1); Y=Y+p0(2); Z=Z+p0(...

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How to change the visualization from lines to a patch

@Amanda, To help me create the maze, I made the image below. It could be helpful to future maze makers. Then I wrote a main ...

How to change the visualization from lines to a patch

@Amanda, To help me create the maze, I made the image below. It could be helpful to future maze makers. Then I wrote a main ...

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Parameters seem to not be optimizing in fmincon

@Joshua Scott, Here is what I understand from reading your code. Correct me if I am wrong. Function Posterior3(data, idx, para...

Parameters seem to not be optimizing in fmincon

@Joshua Scott, Here is what I understand from reading your code. Correct me if I am wrong. Function Posterior3(data, idx, para...

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How do you plot a wave rose/polarhistogram?

@Whale_Shark, Here is a script that plots a regular histogram of wind direction and the same data in polar form. Data is from ...

How do you plot a wave rose/polarhistogram?

@Whale_Shark, Here is a script that plots a regular histogram of wind direction and the same data in polar form. Data is from ...

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Creating a figure with multiple raincloud plots with the same y-axis

@Eleonora Montagnani, It would help if you woudl provide a drawing or other image of what you want. It would also help if you ...

Creating a figure with multiple raincloud plots with the same y-axis

@Eleonora Montagnani, It would help if you woudl provide a drawing or other image of what you want. It would also help if you ...

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What's the simplest way to determine the mass of a sphere from a plot of its density varying in r?

@Alain Vella, I agree with @David Hill, except you want to multiply the density at each value of r by 4*pi*r^2*dr, then add the...

What's the simplest way to determine the mass of a sphere from a plot of its density varying in r?

@Alain Vella, I agree with @David Hill, except you want to multiply the density at each value of r by 4*pi*r^2*dr, then add the...

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How to know what pixels where compressed and not compressed in a image?

@Hudson Romualdo, It is not true that specific pixels are compressed or not compressed whn an image is compressed. The JPEG al...

How to know what pixels where compressed and not compressed in a image?

@Hudson Romualdo, It is not true that specific pixels are compressed or not compressed whn an image is compressed. The JPEG al...

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How to pick group sum values from an array

@Poorna Durga Geesupalli, [edit: correct a typo in one of the comment lines in the code, fix indenting, add comments] Xs='1111...

How to pick group sum values from an array

@Poorna Durga Geesupalli, [edit: correct a typo in one of the comment lines in the code, fix indenting, add comments] Xs='1111...

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Hi when I plot I always get the same color for both bar. They are from different classes. How can I make the color different? Thank you.

@sam, y=[100 90 70]; b=bar(y,'FaceColor','flat'); %Next line: Each row is the colorspec for one bar b.CData=[1,0,0;0,1,0;0,0...

Hi when I plot I always get the same color for both bar. They are from different classes. How can I make the color different? Thank you.

@sam, y=[100 90 70]; b=bar(y,'FaceColor','flat'); %Next line: Each row is the colorspec for one bar b.CData=[1,0,0;0,1,0;0,0...

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HOW CAN I PLOT A CURVE OVER THE SPECTROGRAM OF A LOGARITHMIC CHIRP

@raj, YOu can follow the spectrogram command with "hold on" and then make additinal plots on the same image.

HOW CAN I PLOT A CURVE OVER THE SPECTROGRAM OF A LOGARITHMIC CHIRP

@raj, YOu can follow the spectrogram command with "hold on" and then make additinal plots on the same image.

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Verify the Divergence theorem in MATLAB

@Camstien I now think there was a mistake in my earlier answer. Previously I said the integral for the top surface can be writt...

Verify the Divergence theorem in MATLAB

@Camstien I now think there was a mistake in my earlier answer. Previously I said the integral for the top surface can be writt...

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I'm still a beginner on MATLAB and I'm trying to write a real-time code to implement a DSP system, but an error keeps showing up (Array Indices must be positive or integers)

@Laura, Look at the loop where the error occurs: for i=0:(2*length(n)-1); y1(1,i+1)=h1_mirror(1,(end-i):1:end)*xs(1,1:i+1...

I'm still a beginner on MATLAB and I'm trying to write a real-time code to implement a DSP system, but an error keeps showing up (Array Indices must be positive or integers)

@Laura, Look at the loop where the error occurs: for i=0:(2*length(n)-1); y1(1,i+1)=h1_mirror(1,(end-i):1:end)*xs(1,1:i+1...

2 mois il y a | 1

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Set Tolerance Distance when Interpolating with Nearest Value

@Ahmet Hakan UYANIK, I assume you know the heights at scattered points, and you want to interpolate the heights to points on a ...

Set Tolerance Distance when Interpolating with Nearest Value

@Ahmet Hakan UYANIK, I assume you know the heights at scattered points, and you want to interpolate the heights to points on a ...

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I'm struggling to find a way to filter the ECG signal and make modulation for the other signals

@Yousef Ahmed, please make an attempt. Then others will assist. For all of these, the carrier wave is fc=40 kHz. Therefore ...

I'm struggling to find a way to filter the ECG signal and make modulation for the other signals

@Yousef Ahmed, please make an attempt. Then others will assist. For all of these, the carrier wave is fc=40 kHz. Therefore ...

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Creating variables in a foor loop using num2str

@Jiri Kovar, [edit: change "v" to "s" in my description, to match the code] N=50; for i=10:10:N, s.(strcat('a',num2str(i)))=i...

Creating variables in a foor loop using num2str

@Jiri Kovar, [edit: change "v" to "s" in my description, to match the code] N=50; for i=10:10:N, s.(strcat('a',num2str(i)))=i...

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Matrix size and scalar problem using fmincon

@Paul AGAMENNONE, It appears that the value Rs returned by parameterfun() is a vector (or array). Rs is a vector because funct...

Matrix size and scalar problem using fmincon

@Paul AGAMENNONE, It appears that the value Rs returned by parameterfun() is a vector (or array). Rs is a vector because funct...

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Converting equations to first order system for ODE45

@Simon Aldworth, I think you are corect tht a state vector with six elements, as you have defined above, will suffice. If we c...

Converting equations to first order system for ODE45

@Simon Aldworth, I think you are corect tht a state vector with six elements, as you have defined above, will suffice. If we c...

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Help me plot grafic pls.

@ebru, Yoiur foumula includes an infinite sum. Do a finite sum and see if it converges after 10 or 20 or 30 terms. When I do i...

Help me plot grafic pls.

@ebru, Yoiur foumula includes an infinite sum. Do a finite sum and see if it converges after 10 or 20 or 30 terms. When I do i...

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Add columns to excel file

@Truc, Code below reads the data from the .xls file and adds channels III, aVR, aVL, avF. %% Read data from xls file. filenam...

Add columns to excel file

@Truc, Code below reads the data from the .xls file and adds channels III, aVR, aVL, avF. %% Read data from xls file. filenam...

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