Yagnaseni Roy
Massachusetts Institute of Technology
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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 ...
plus de 8 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 10 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
environ 10 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
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-...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
presque 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
presque 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
presque 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
plus de 12 ans il y a | 4 réponses | 0
4
réponsesQuestion
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=[...
plus de 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
plus de 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
plus de 12 ans il y a | 3 réponses | 0
3
réponsesQuestion
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 ...
plus de 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
plus de 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
plus de 12 ans il y a | 2 réponses | 0
2
réponsesstoring 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:...
plus de 12 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...
plus de 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
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 ...
plus de 12 ans il y a | 1 réponse | 0