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Yagnaseni Roy


Massachusetts Institute of Technology

Active since 2011

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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 ...

bijna 9 jaar ago | 1 answer | 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...

meer dan 10 jaar ago | 0 answers | 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...

meer dan 10 jaar ago | 0 answers | 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...

meer dan 10 jaar ago | 1 answer | 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...

meer dan 10 jaar ago | 1 answer | 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-...

bijna 11 jaar ago | 1 answer | 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...

ongeveer 12 jaar ago | 1 answer | 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 ...

ongeveer 12 jaar ago | 1 answer | 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...

meer dan 12 jaar ago | 2 answers | 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...

meer dan 12 jaar ago | 2 answers | 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...

meer dan 12 jaar ago | 1 answer | 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 ...

ongeveer 13 jaar ago | 4 answers | 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=[...

ongeveer 13 jaar ago | 1 answer | 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 ...

ongeveer 13 jaar ago | 2 answers | 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...

ongeveer 13 jaar ago | 3 answers | 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 ...

ongeveer 13 jaar ago | 1 answer | 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 ...

ongeveer 13 jaar ago | 2 answers | 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...

ongeveer 13 jaar ago | 2 answers | 0

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Answered
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:...

ongeveer 13 jaar ago | 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...

ongeveer 13 jaar ago | 2 answers | 0

2

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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 ...

ongeveer 13 jaar ago | 1 answer | 0

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