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Yagnaseni Roy


Massachusetts Institute of Technology

Con actividad desde 2011

Mechanical Engineering student in MIT

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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 ...

alrededor de 8 años hace | 1 respuesta | 0

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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...

casi 10 años hace | 0 respuestas | 0

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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...

casi 10 años hace | 0 respuestas | 0

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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...

casi 10 años hace | 1 respuesta | 0

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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...

casi 10 años hace | 1 respuesta | 0

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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-...

alrededor de 10 años hace | 1 respuesta | 0

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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...

más de 11 años hace | 1 respuesta | 0

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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 ...

más de 11 años hace | 1 respuesta | 0

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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...

más de 11 años hace | 2 respuestas | 0

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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...

más de 11 años hace | 2 respuestas | 0

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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...

casi 12 años hace | 1 respuesta | 0

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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 ...

más de 12 años hace | 4 respuestas | 0

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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=[...

más de 12 años hace | 1 respuesta | 0

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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 ...

más de 12 años hace | 2 respuestas | 0

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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...

más de 12 años hace | 3 respuestas | 0

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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 ...

más de 12 años hace | 1 respuesta | 0

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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 ...

más de 12 años hace | 2 respuestas | 0

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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...

más de 12 años hace | 2 respuestas | 0

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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:...

más de 12 años hace | 0

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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...

más de 12 años hace | 2 respuestas | 0

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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 ...

más de 12 años hace | 1 respuesta | 0

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