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Why does ode45 output "NaN" after some time, with this time depending on the input
@Merritt, There was an error when I ran testinstudy, because it calls heightconst(), which you did not provide. SO I commented ...
Why does ode45 output "NaN" after some time, with this time depending on the input
@Merritt, There was an error when I ran testinstudy, because it calls heightconst(), which you did not provide. SO I commented ...
6 mois il y a | 0
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how to crop figures from excess white area
@Sven Larsen, One can reduce the whitespace by clicking and dragging the edgesof the image window so that it more closely matche...
how to crop figures from excess white area
@Sven Larsen, One can reduce the whitespace by clicking and dragging the edgesof the image window so that it more closely matche...
6 mois il y a | 1
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Cropping an irregular image in matlab
@Lauren Smith, it appears to me that a rectangular crop would work for this image. A rectangle can be selected that includes not...
Cropping an irregular image in matlab
@Lauren Smith, it appears to me that a rectangular crop would work for this image. A rectangle can be selected that includes not...
6 mois il y a | 0
A répondu
How can I fix my code of the heat equation?
@Jesus, [Edit: Correct "x(i)=pos(1) & y(j)=pos(2)" to "x(i)==pos(1) & y(j)==pos(2)".] [Edit: Fixed the update formula.] Am I...
How can I fix my code of the heat equation?
@Jesus, [Edit: Correct "x(i)=pos(1) & y(j)=pos(2)" to "x(i)==pos(1) & y(j)==pos(2)".] [Edit: Fixed the update formula.] Am I...
6 mois il y a | 0
A répondu
Rungekuttan for a system of 2 DOE functions
@Emelia, I recommend that you write a set of first order differential equations for your system. Let the four variables be x, ...
Rungekuttan for a system of 2 DOE functions
@Emelia, I recommend that you write a set of first order differential equations for your system. Let the four variables be x, ...
6 mois il y a | 0
A répondu
deg2nm give unrealistic answer
@Bumpa, deg2nm(1) And when I run it locally I get the same thing.
deg2nm give unrealistic answer
@Bumpa, deg2nm(1) And when I run it locally I get the same thing.
6 mois il y a | 0
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How to apply the same operation to an ever increasing number of columns?
@Zulfiqar Alibhai [I moved my suggestion from comment section to answer section.] a=[1:7]; b=zeros(20,7); c=b; for j=1:7, b(:...
How to apply the same operation to an ever increasing number of columns?
@Zulfiqar Alibhai [I moved my suggestion from comment section to answer section.] a=[1:7]; b=zeros(20,7); c=b; for j=1:7, b(:...
6 mois il y a | 0
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Solve Displacement Driven Mass/Spring System
@Joerg Fricke-Schmidt, You have written a system of first order differential equations, but I don't think it describes the syst...
Solve Displacement Driven Mass/Spring System
@Joerg Fricke-Schmidt, You have written a system of first order differential equations, but I don't think it describes the syst...
6 mois il y a | 2
A soumis
Bilinear Fit
Fit two intersecting straight lines to a set of x,y data points.
6 mois il y a | 10 téléchargements |
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Solving a system of ordinary differential equations
@Emily, It looks reasonable to me, especially when I simulate for a longer time. tspan = [0 500]; %timespan y0 = [0.0675 0...
Solving a system of ordinary differential equations
@Emily, It looks reasonable to me, especially when I simulate for a longer time. tspan = [0 500]; %timespan y0 = [0.0675 0...
6 mois il y a | 0
A répondu
How can I make a vector that looks like this [2 1 2 1 1 4 1 1 6 1 1 8...1 100 1]?
@Rowdy cv4=[2,1,2,ones(1,148)]; for i=6:3:151, cv4(i)=2*i/3; end cv4 Try it.
How can I make a vector that looks like this [2 1 2 1 1 4 1 1 6 1 1 8...1 100 1]?
@Rowdy cv4=[2,1,2,ones(1,148)]; for i=6:3:151, cv4(i)=2*i/3; end cv4 Try it.
6 mois il y a | 1
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I want to fit the curve with two linear curves and find the point where the fitted curve deviates from the linear relationship, sort of the tangent point.
@T, [edit: corrected typo in formula for ] The figure you included shows two striaight lines (black) fitted to a portion of a ...
I want to fit the curve with two linear curves and find the point where the fitted curve deviates from the linear relationship, sort of the tangent point.
@T, [edit: corrected typo in formula for ] The figure you included shows two striaight lines (black) fitted to a portion of a ...
6 mois il y a | 0
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how to make linear fit
@ahmad Saad, There are a number of ways you could do it. here is one example: x=0:100; y=2*x+20+10*randn(1,101); p=polyfit(x...
how to make linear fit
@ahmad Saad, There are a number of ways you could do it. here is one example: x=0:100; y=2*x+20+10*randn(1,101); p=polyfit(x...
6 mois il y a | 0
| A accepté
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Repeating elements in a vector
@Furkan Sencer Kaçar, A = [0,1; 1; 5; 10; 20] is not valid because it uses a comma as well as semicolons. I assume you meant...
Repeating elements in a vector
@Furkan Sencer Kaçar, A = [0,1; 1; 5; 10; 20] is not valid because it uses a comma as well as semicolons. I assume you meant...
6 mois il y a | 1
A répondu
2nd Order Non-Linear Equation Numerical Solution and Plot
@Conlen O'Brien, tspan=[0 10]; x0=[-25 0]; A=1; B=1; [t,x] = ode45(@(t,x) [x(2);-A+B*x(2).^2], tspan, x0); Do you think the...
2nd Order Non-Linear Equation Numerical Solution and Plot
@Conlen O'Brien, tspan=[0 10]; x0=[-25 0]; A=1; B=1; [t,x] = ode45(@(t,x) [x(2);-A+B*x(2).^2], tspan, x0); Do you think the...
6 mois il y a | 0
| A accepté
A répondu
How to obtain the translational and angular accelerations of center of mass in rigid body
@Feng, I have moved my comment to an answer, since that is what I intended. To start, we should know the positions of the senso...
How to obtain the translational and angular accelerations of center of mass in rigid body
@Feng, I have moved my comment to an answer, since that is what I intended. To start, we should know the positions of the senso...
6 mois il y a | 0
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How to do FFT on I,Q data
@Ankit, Let's assume you have read in data from a two-column file. Column 1 is in-phase, column 2 is quadrature. N=256; fs=1...
How to do FFT on I,Q data
@Ankit, Let's assume you have read in data from a two-column file. Column 1 is in-phase, column 2 is quadrature. N=256; fs=1...
6 mois il y a | 1
A répondu
Getting an equation from a signal transfer function
@Sifiso Mzobe, There are two distinct threads in this discussion. One thread is an answer to your original quesiton: 'I meas...
Getting an equation from a signal transfer function
@Sifiso Mzobe, There are two distinct threads in this discussion. One thread is an answer to your original quesiton: 'I meas...
6 mois il y a | 0
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a code that works before started working so why
@Min Khant, This method makes things look a lot more complicated than necessary. The state vector x() has the usual components...
a code that works before started working so why
@Min Khant, This method makes things look a lot more complicated than necessary. The state vector x() has the usual components...
6 mois il y a | 0
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FFT Analysis Issue: Unexpected Harmonic Multiples in Vibration Signal Frequency Plot
@Valeriya Kostyukova, [edit: corect typos] I agree with @Star Strider that you are plotting the 2-sided spectrum, and that is ...
FFT Analysis Issue: Unexpected Harmonic Multiples in Vibration Signal Frequency Plot
@Valeriya Kostyukova, [edit: corect typos] I agree with @Star Strider that you are plotting the 2-sided spectrum, and that is ...
6 mois il y a | 0
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How to add vertical axis break to given plotting scheme
@Tristen, Check these out at the File Exchange: https://www.mathworks.com/matlabcentral/fileexchange/45760-break-y-axis?s_tid=...
How to add vertical axis break to given plotting scheme
@Tristen, Check these out at the File Exchange: https://www.mathworks.com/matlabcentral/fileexchange/45760-break-y-axis?s_tid=...
6 mois il y a | 0
| A accepté
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Heart rate signal using simulink
@Rakan Khair, You replied that you are afraid that the ECG board (Arduino board) has noise. Let's collect some data to see if ...
Heart rate signal using simulink
@Rakan Khair, You replied that you are afraid that the ECG board (Arduino board) has noise. Let's collect some data to see if ...
7 mois il y a | 2
| A accepté
A répondu
How to find largest Lyapunov exponent for the second order forced duffing oscillator by using the time series data [obtained by ODE45]?
@PONNADA, If you have access to the Control Systems toolbox, do lyapExp = lyapunovExponent(X,fs) where X is the signal and Fs...
How to find largest Lyapunov exponent for the second order forced duffing oscillator by using the time series data [obtained by ODE45]?
@PONNADA, If you have access to the Control Systems toolbox, do lyapExp = lyapunovExponent(X,fs) where X is the signal and Fs...
7 mois il y a | 2
| A accepté
A répondu
How to plot FFT and spectrogram of I-Q data?
@Meghna Roy Chowdhury, Since you did not provide the data file, I have created a complex signal y(t) composed of band-limited G...
How to plot FFT and spectrogram of I-Q data?
@Meghna Roy Chowdhury, Since you did not provide the data file, I have created a complex signal y(t) composed of band-limited G...
7 mois il y a | 0
A répondu
How to plot FFT and spectrogram of I-Q data?
@Meghna Roy Chowdhury, I assume the data is in a file called "filepath", that you want to open the file for reading (hence the ...
How to plot FFT and spectrogram of I-Q data?
@Meghna Roy Chowdhury, I assume the data is in a file called "filepath", that you want to open the file for reading (hence the ...
7 mois il y a | 0
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How to tweak an equation to properly fit a dataset using lsqcurvefit?
“Think??” Makes me chuckle :) Interesting plot and interesting that all pressures are unique.
How to tweak an equation to properly fit a dataset using lsqcurvefit?
“Think??” Makes me chuckle :) Interesting plot and interesting that all pressures are unique.
7 mois il y a | 0
A répondu
How to tweak an equation to properly fit a dataset using lsqcurvefit?
@Juneight, {Edit: Dimensional analysis needs changing because now you say x3 is [Pa] and before you said x3 is [m]. You sai...
How to tweak an equation to properly fit a dataset using lsqcurvefit?
@Juneight, {Edit: Dimensional analysis needs changing because now you say x3 is [Pa] and before you said x3 is [m]. You sai...
7 mois il y a | 0
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Why does my random walk simulation come out so weird?
@Kevin Nelson, Your formula introduces an increaing probability of "stay the same on each step" as M, the number of walks, grow...
Why does my random walk simulation come out so weird?
@Kevin Nelson, Your formula introduces an increaing probability of "stay the same on each step" as M, the number of walks, grow...
7 mois il y a | 0
A répondu
My graph is not picking up my time increments, its suppose to have a nice curve, but its coming out as a straight line.
@BAILEY MCMASTER, clear Ts=30; % ms Td=60; % ms Chs=.001; % L/mmhg Chd=.015; % L/mmhg N=800; % number of elements t=0:1:8...
My graph is not picking up my time increments, its suppose to have a nice curve, but its coming out as a straight line.
@BAILEY MCMASTER, clear Ts=30; % ms Td=60; % ms Chs=.001; % L/mmhg Chd=.015; % L/mmhg N=800; % number of elements t=0:1:8...
7 mois il y a | 0
| A accepté
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Multiple errors- Not that great at Matlab :(
@azaandria, It looks like 3 errors but it is really only one error. Error using DynamicResponse/parfor%supply_1 Index in posi...
Multiple errors- Not that great at Matlab :(
@azaandria, It looks like 3 errors but it is really only one error. Error using DynamicResponse/parfor%supply_1 Index in posi...
7 mois il y a | 0