Chaowei Chen

University of Maryland

Con actividad desde 2011

Followers: 1 Following: 0

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Professional Interests: Human machine interface, integration of software and hardware, image processing, microscopy, convex optimization

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Creating a movie sequence from rgb images
for frame_idx = start_frame:end_frame image = dataset(:,:,frame_idx); msk = mask_stack(:,:,frame_idx); ...

casi 7 años hace | 0

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The command line is too long. Error: An error occurred while shelling out to javac (error code = 1). Unable to build executable.
I am using mcc to build java classes from .m files The command is following: mcc -W "java:matlabapi,DefaultClass" -T lin...

más de 8 años hace | 0 respuestas | 0

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más de 8 años hace | 1 respuesta | 0

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más de 8 años hace | 0 respuestas | 0

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Sudoku
Solves sudoku puzzle. Generates all possible answers.

alrededor de 11 años hace | 1 descarga |

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google
google.m is a simple shell interface to initiate Google search in Matlab.

más de 11 años hace | 1 descarga |

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remove varables in MAT file(s)
Want to delete same variables in possibly many MAT files? removevar is for you!

más de 11 años hace | 2 descargas |

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select current object
select current object by buttons. Each button represents one object which is either axes, image, etc

más de 11 años hace | 1 descarga |

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saves variables into MAT file matfile
saves variables into MAT file matfile

más de 11 años hace | 1 descarga |

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loads one variable from MAT-file(s) into workspace
Need to load a same variable from a list of MAT files? This is for you!

más de 11 años hace | 1 descarga |

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change shorkeys "ctrl+shift+0" for editor
I understand that ctrl+shift+0 focuses window to the editor. I wonder if it is possible to change "ctrl+shift+0" to "ctrl+~" fo...

más de 11 años hace | 1 respuesta | 0

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how to set position and outerposition respectively the same as from another axes?
I want to display a scalebar on a 3d plot. When I rotate the 3d plot, I want to keep the scalebar still. The way I approach it i...

alrededor de 12 años hace | 1 respuesta | 0

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how to draw a hyperboloid?
[x,y]=meshgrid(-10:10); r_sq=x.^2+y.^2; z=sqrt(r_sq+1); surf(x,y,z)

casi 13 años hace | 0

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make result matrix for comparing of (for example) 20 inputs matrix with 20 refrences matrix
You can use cell matrix, which contains mixed type of values. In your case, the first column and row are string while the rest ...

casi 13 años hace | 1

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How to catch reaction time with MATLAB; How to save text file from command window automatically
1. doc diary 2. I think the problem happens at kp=find(kp) It means wherever kp is nonzero, assign the position to kp. My m...

casi 13 años hace | 0

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Inline Indexing to Dynamic Field Names
Varnames={'var1', 'var2', 'varx', 'vary'}; %if varx is scalar TestStruct.(Varnames{1,3}) = 0 %if varx is array TestS...

casi 13 años hace | 1

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To get dominant eigen vector
[U,S,V]=svd(C) gives you the singular value decomposition of C. i.e., C=U*S*V' where the singular values S are in decreasing or...

casi 13 años hace | 1

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how to draw tangent line simulink graph ?
function plot_tangent(x,y) if nargin<2, x=1:0.01:10;y=sin(x); end s=diff(y)./diff(x); f_tangent=@(a...

casi 13 años hace | 0

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Play Video in MATLAB GUI with other Objects
function main [f,p]=uigetfile('*.avi');cd(p) h_play=uicontrol('style','pushbutton','callback',@play_vid,'string','pl...

casi 13 años hace | 0

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Play Video in MATLAB GUI with other Objects
function main vid = videoinput('winvideo', 1); figure; h_play=uicontrol('style','pushbutton','callback',@play_vid,'stri...

casi 13 años hace | 0

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Play Video in MATLAB GUI with other Objects
function main(var_3D) if nargin<1, var_3D=randn(100,100,100);end [R,C,Frame]=size(var_3D); h_play=uicontrol('st...

casi 13 años hace | 0

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How to use spatial image coordinates to get image pixel values??
You are almost there. ROI=roipoly(img); pixValue=img(ROI);

casi 13 años hace | 0

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How to scan a user-input sentence/phrase for the individual words
Just a subtle improvement to Jiang's approach. (To get rid of the period symbol) InputText='This is is my testing speech.'; ...

casi 13 años hace | 0

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How can i extend my graph to a certain point in the graph
I think you probably just want to do axis([0 16 0 500])

casi 13 años hace | 1

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autocorrelate rows of matrix without using a for loop
The idea is to convert mat to cell since each row is independent. After processing, convert cell back to mat. a2=mat2cell(a,...

casi 13 años hace | 0

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I need to import a file of unsupported format into Matlab (multiple image sequence)
Does the file follows a certain format like tif? In this case, frame_k = imread('filename.tif',k); If it is a custom format,...

casi 13 años hace | 0

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Delete/Hide points of a surface
figure;hold on; h1=plot(1,1,'b.'); h2=plot(2,2,'r.'); hold off % if you want to hide h2 set(h2,'visible','off') % if...

casi 13 años hace | 0

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put time stamp on video using videowrite
clc;clear;close all vid = videoinput('winvideo', 1); set(vid,'TriggerRepeat',Inf); vid.FrameGrabInterval = 1; vid_sr...

casi 13 años hace | 1

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Generalized eigenvalue problem
If V'*B*V = I, This indicates B is identity matrix, therefore, simply [V,D] = eig(A)

casi 13 años hace | 0

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Change file extension from .wav to .res
Supposing you just want to rename the file, do this ! ren temp.wav temp.res

casi 13 años hace | 0

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Chaowei Chen

University of Maryland

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