Chaowei Chen

University of Maryland

Aktiv seit 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); ...

mehr als 7 Jahre vor | 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...

etwa 9 Jahre vor | 0 Antworten | 0

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etwa 9 Jahre vor | 1 Antwort | 0

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etwa 9 Jahre vor | 0 Antworten | 0

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Gesendet

Sudoku
Solves sudoku puzzle. Generates all possible answers.

mehr als 11 Jahre vor | 1 Download |

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

fast 12 Jahre vor | 1 Download |

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

fast 12 Jahre vor | 2 Downloads |

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

fast 12 Jahre vor | 1 Download |

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

fast 12 Jahre vor | 1 Download |

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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!

fast 12 Jahre vor | 1 Download |

Frage

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...

mehr als 12 Jahre vor | 1 Antwort | 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...

mehr als 12 Jahre vor | 1 Antwort | 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)

mehr als 13 Jahre vor | 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 ...

mehr als 13 Jahre vor | 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...

mehr als 13 Jahre vor | 0

Beantwortet
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...

mehr als 13 Jahre vor | 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...

mehr als 13 Jahre vor | 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...

mehr als 13 Jahre vor | 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...

mehr als 13 Jahre vor | 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...

mehr als 13 Jahre vor | 0

Beantwortet
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...

mehr als 13 Jahre vor | 0

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

mehr als 13 Jahre vor | 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.'; ...

mehr als 13 Jahre vor | 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])

mehr als 13 Jahre vor | 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,...

mehr als 13 Jahre vor | 0

Beantwortet
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,...

mehr als 13 Jahre vor | 0

Beantwortet
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...

mehr als 13 Jahre vor | 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...

mehr als 13 Jahre vor | 1

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

mehr als 13 Jahre vor | 0

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

mehr als 13 Jahre vor | 0

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Chaowei Chen

University of Maryland

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