Yagnaseni Roy

Massachusetts Institute of Technology

Actif depuis 2011

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Mechanical Engineering student in MIT

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Question

lsqcurvefit for function with exp in numerator and denominator
I've played around with lsqcurvefit to have confidence in my use of it. However the one instance that it doesn't work for me is ...

presque 10 ans il y a | 1 réponse | 0

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Question

Plotting this gaussian distribution.
I'm trying to make a list of velocities that come from a gaussian distribution, by the code below. However, I'm not being able t...

plus de 11 ans il y a | 1 réponse | 0

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Question

Putting constraints for different parts of a matrix using fmincon
Hi everyone, So I'm basically using fsolve, and everything's fine with it except that I'm trying to establish limits on a par...

plus de 11 ans il y a | 1 réponse | 0

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Question

Index exceeds matrix dimensions, using fsolve
I don't see any reason why I should be exceeding matrix dimensions here. The constants in the function (z onwards till Dinf) are...

plus de 11 ans il y a | 1 réponse | 0

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Question

Solving equations involving specific elements of matrices. Is this possible on MATLAB?
So lets say I have 2 matrices A and B. I need to solve 2 eqns involving specific elements of each matrix. e.g. A(1)+B(2)=4; A(1...

presque 12 ans il y a | 1 réponse | 0

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Question

Solving simultaneous differential equations symbolically on MATLAB
I need to solve the following differential equations (recommended method: Runge Kutta Gill integration) (dc/dx) = (K*c-...

presque 12 ans il y a | 1 réponse | 0

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Question

How do I integrate this expression?
I have an expression for force here: f =1.3e7*((500*y).*(0.46775*cos(60*t+0.2094395101999999e6*x)+0.37843*cos(2*(60*t+0.209...

environ 13 ans il y a | 1 réponse | 0

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Question

How to get the -ve x axis on the right side of the +ve axis?
Hi, I'm able to plot graphs on MATLAB and I'm using this to plot graphs that are supposed to be used to validate against the ...

plus de 13 ans il y a | 1 réponse | 0

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Question

What is wrong with this expression, why is MATLAB not being able to understand it?
(50*y).*(28.065*cos(60*t+0.2094395101999999*x)+22.7058*cos(2*(60*t+0.2094395101999999*x))+15.1368*cos(3*(60*t+0.2094395101999999...

plus de 13 ans il y a | 2 réponses | 0

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Question

Which category of (MATLAB) function type do these MATLAB commands fall in?
medfilt2; imopen; ginput; imadjust; imsubtract ;imcontrast; mmreader; imshow; imcontour; cpselect; imagesc; ....these ar...

plus de 13 ans il y a | 2 réponses | 0

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Question

How to plot thisfunction?
The function to be plotted is: 50*(y*(28.065*cos(60[1/s]*t+0.2094395101999999[1/m]*x)+22.7058*cos(2*(60[1/s]*t+0.2094395101...

plus de 13 ans il y a | 1 réponse | 0

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Question

How to remove the background/background noise from the images that comprise my video?
Hi, I have a video in which a cell moves along a channel...however, the background i.e. *the channel is near the brightness of ...

environ 14 ans il y a | 4 réponses | 0

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Question

What's wrong with my for loop?....error is that matric dimensions must match.
Bii=B1{ii}; for ii= 1:N Bii=B1{ii}; [x,y]=find(B1{ii}==max(max(B1{ii}))); [X,Y]=find(B1{1}==max(max(B1{1}))); DIFF=[...

environ 14 ans il y a | 1 réponse | 0

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Question

Subtracting the first frame of a movie from all the others....using imsubract maybe?
Hi, *I split all the frames of my movie into its frames using the following code*..... M = mmreader('cell.avi'); N ...

environ 14 ans il y a | 2 réponses | 0

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Question

splitting a video into frames using image function after using mmreader to read video file...
*I wasn't being able to bring an avi file into the workspace, so I brought the video into the MATLAB file and played it using im...

environ 14 ans il y a | 3 réponses | 0

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Question

Error in bringing an avi file(which was originally a .mov file and was converted by an online convertor) into MATLAB workspace.
*I tried bringing an avi file into the workspace.*Previously, I have brought others with no problem, but for this one(which was ...

environ 14 ans il y a | 1 réponse | 0

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Question

Converting images into string and hence using imread and ROI specification.
Hi, I can open my image using imtool, but in order to specify a region of interest(ROI), the functions such as imroi, imread ...

environ 14 ans il y a | 2 réponses | 0

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Question

using getframe to separate frames from a video...need easy code.
Fractogene is the name of my video.... I tried: for frame = 1:number fractogene(frame)= getframe; end fractogene(1...

environ 14 ans il y a | 2 réponses | 0

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Réponse apportée
storing the individual frames of a video i(existing on workspace) n to image locations and analyse each frame's image on imtool (perhaps using imwrite?).
I did for frame = 1:number fractogene(frame)= getframe; end fractogene(117) ans = cdata:...

environ 14 ans il y a | 0

Question

storing the individual frames of a video i(existing on workspace) n to image locations and analyse each frame's image on imtool (perhaps using imwrite?).
*I have a video on the workspace, which I can open using movieplayer.* *Now all I want to do is get each frame of the video an...

environ 14 ans il y a | 2 réponses | 0

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Question

Tracking a particle on my vidoe using MATLAB Image processing toolbox.
Hi, I have a movie that contains a particle moving from one end of a channel to another end. The velocity of the particle is ...

environ 14 ans il y a | 1 réponse | 0

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