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已回答

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...

2 days 前 | 0

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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...

2 days 前 | 0

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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, ...

3 days 前 | 0

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已回答

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(...

4 days 前 | 0

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已回答

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 ...

4 days 前 | 0

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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...

6 days 前 | 0

已回答

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 ...

7 days 前 | 0

已回答

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 ...

7 days 前 | 0

已回答

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...

7 days 前 | 0

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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...

7 days 前 | 0

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已回答

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...

8 days 前 | 0

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已回答

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...

8 days 前 | 0

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已回答

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.

8 days 前 | 0

已回答

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...

10 days 前 | 0

已回答

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...

11 days 前 | 1

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已回答

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 ...

12 days 前 | 0

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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 ...

12 days 前 | 0

已回答

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...

12 days 前 | 0

已回答

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...

13 days 前 | 1

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已回答

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...

13 days 前 | 1

已回答

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...

13 days 前 | 0

已回答

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...

13 days 前 | 0

已回答

Add columns to excel file

@Truc, It seems to me far easier to add the missing leads in Excel. The attached Excel workbook has columns added for leads III...

Add columns to excel file

@Truc, It seems to me far easier to add the missing leads in Excel. The attached Excel workbook has columns added for leads III...

14 days 前 | 0

已回答

I can't figure out how to write equations of motion into Matlab.

@Alejandro Nava, Please read the examples in ode45() help pages carefully, They are very helpful. You have two angular velocit...

I can't figure out how to write equations of motion into Matlab.

@Alejandro Nava, Please read the examples in ode45() help pages carefully, They are very helpful. You have two angular velocit...

15 days 前 | 1

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已回答

The Newton Raphson Method

@Bruce, It appears that your x is a 2-coulmn array where column1 = theta, column 2=phi. I assume you have a function pendulum(...

The Newton Raphson Method

@Bruce, It appears that your x is a 2-coulmn array where column1 = theta, column 2=phi. I assume you have a function pendulum(...

15 days 前 | 0

已回答

I'd like to know how to make histogram with matlab raw data file.

@HYUK BIN KWON, I recommend that you read the help for load and for importdata, and try the examples provided. histogram(x) do...

I'd like to know how to make histogram with matlab raw data file.

@HYUK BIN KWON, I recommend that you read the help for load and for importdata, and try the examples provided. histogram(x) do...

15 days 前 | 0

已回答

Display divergence of trajectories

@Jambalya, PLease attach code as .m files instead of attaching screenshots of code. You say "after 1000 interations". I am no...

Display divergence of trajectories

@Jambalya, PLease attach code as .m files instead of attaching screenshots of code. You say "after 1000 interations". I am no...

15 days 前 | 0

已回答

Problem using biquad filter object

@Vincent St-Pierre, I'm not sure why your code does not work, but a simple 4th order Butterworth works fine. See code below. ...

Problem using biquad filter object

@Vincent St-Pierre, I'm not sure why your code does not work, but a simple 4th order Butterworth works fine. See code below. ...

15 days 前 | 0

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已回答

How do I compare two simulation files?

@Ali AlMuslih, Here is an example of what I mean. I am attaching two files of simulated data, with 5 records , plus a column f...

How do I compare two simulation files?

@Ali AlMuslih, Here is an example of what I mean. I am attaching two files of simulated data, with 5 records , plus a column f...

15 days 前 | 0

已回答

how to plot bifurcation graph

@shiv gaur, I do not understand what you are bdoing with a(), b(), and c() inside the main loop (the loop "for j=2:Nt+1, ..., e...

how to plot bifurcation graph

@shiv gaur, I do not understand what you are bdoing with a(), b(), and c() inside the main loop (the loop "for j=2:Nt+1, ..., e...

15 days 前 | 0