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Aaronne


Active since 2011

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Answered
displacement vector
I guess you are looking for something at the end the page Use 'quiver' function. Thanks.

meer dan 10 jaar ago | 1

Question


Matlab draw 'subaxis' based subplots on specified 'axes'
Hi smart guys, I am coding some GUI staff using Matlab. And I want to plot a figure with subfigures in one specified 'axes' u...

meer dan 10 jaar ago | 0 answers | 0

0

answers

Answered
How to output a 2D integer array using Matlab mex?
I got the answer with the help from someone. I put it here for others' reference. // Output the results plhs[0] ...

bijna 11 jaar ago | 4

| accepted

Answered
How to pass an image to a 2D array using Matlab MEX?
I got the answer with the help from someone. I put it here for others' reference. // Output the results plhs[0] ...

bijna 11 jaar ago | 1

Question


How to output a 2D integer array using Matlab mex?
I got a follow up question about Matlab mex function input/output 2D array format. For example, I have a variable '`outputBuff`'...

bijna 11 jaar ago | 1 answer | 0

1

answer

Answered
How to pass an image to a 2D array using Matlab MEX?
Thanks for editing. I found a way from other people. Just put it here for other people's interest. 1) The line ubuff = (...

bijna 11 jaar ago | 2

| accepted

Question


How to pass an image to a 2D array using Matlab MEX?
I want to read some image to run a C++ MEX function to process this image. The image is originally stored as a Matlab 3D matrix,...

bijna 11 jaar ago | 2 answers | 1

2

answers

Question


How to get the mean of ROC curves using Matlab?
I met a problem to plot the mean ROC curve of the 10-fold cross-validation using Matlab. I run the code cvPartition =...

meer dan 11 jaar ago | 1 answer | 1

1

answer

Question


Leave-One-Out with ROC
Hi smart guys, May I ask how to create ROC for the leave-one-out cross-validation? I create partition of the data as: ...

meer dan 11 jaar ago | 1 answer | 0

1

answer

Question


How to add a 'colorbar' and set 'clim' to a colour image overlaid on a grey level image?
Hi all, I am trying to overlay a colour image on a grey level image. However, when I try to plot the 'colorbar' and set the '...

meer dan 11 jaar ago | 2 answers | 0

2

answers

Question


How to plot a hyper plane in 3D for the SVM results?
I just wondering how to plot a hyper plane of the SVM results. For example, here we are using two features, we can plot the d...

meer dan 11 jaar ago | 2 answers | 1

2

answers

Question


How to evaluate a logistic regression classifier?
Hi Smart Guys, I wrote following codes to construct a logistic regression classifier. Essentially, it uses the Matlab Genera...

meer dan 11 jaar ago | 0 answers | 1

0

answers

Question


How to do a ROC analysis using Matlab build-in SVM (Not LibSVM)
Hi all, Just wondering anyone knows how to do a ROC analysis using Matlab build-in SVM? This question has been asked by milli...

meer dan 11 jaar ago | 2 answers | 0

2

answers

Question


KNN classifier with ROC Analysis
Hi Smart guys, I wrote following codes to get a plot of ROC for my KNN classifier: load fisheriris; feat...

meer dan 11 jaar ago | 1 answer | 1

1

answer

Question


How to use the 'perfcurve' of Matlab with specific inputs?
Hi Smart guys, I wrote following codes to get a plot of 'classification accuracy' vs. 'threshold': (The datasets has t...

meer dan 11 jaar ago | 1 answer | 0

1

answer

Question


What exactly the ROC curve can tell us or can be inferred?
Hi Smart Guys, I wrote some codes to run a linear discriminant analysis based classification: %% Construct a LDA classif...

meer dan 11 jaar ago | 2 answers | 2

2

answers

Question


How to do a classification using Matlab?
Hi Smart Guys, I have got the data (can be downloaded here: [enter link description here][1]) and tried to run a simple LDA b...

meer dan 11 jaar ago | 1 answer | 1

1

answer

Question


How to get the volume of a 3D concave shape?
Hi smart guys, I am wondering if anyone knows how to get the volume of a 3D concave shape? The Matlab build-in function can o...

bijna 12 jaar ago | 3 answers | 0

3

answers

Question


How to get the principal curvatures of a given mesh?
Hi smart guys, I have a problem of getting principal curvatures from a given mesh (of a shape). 1. I am trying to use 'pat...

bijna 12 jaar ago | 0 answers | 0

0

answers

Question


Color map and color bar of the overlaid index image on a gray scale background image?
Hi smart guys, I use following example codes to overlay an index image on a background image (in the example below it is RGB ...

bijna 12 jaar ago | 1 answer | 1

1

answer

Question


Warning: RGB color data not yet supported in Painter's mode
Hi smart guys, Have you got any new solutions to this 'Warning: RGB color data not yet supported in Painter's mode'? I got...

ongeveer 12 jaar ago | 0 answers | 0

0

answers

Question


Question about the last step of computing the eigenface.
I read the article online about computing the eigenface at http://www.scholarpedia.org/article/Eigenfaces and there are 5 step...

meer dan 12 jaar ago | 0 answers | 0

0

answers

Question


Build ITK .dll for Matlab Use?
Hi there, I have got a few ITK based codes which contain lots of useful functions. I am wondering if it is possible to build ...

meer dan 13 jaar ago | 2 answers | 0

2

answers

Question


How to add a total variation term to my tomographic reconstruction problem?
Hi there, I have got a very simple model to do a tomographic reconstruction: arg min_x ||Ax - y||^2 in which, A is th...

meer dan 13 jaar ago | 1 answer | 1

1

answer

Question


How to solve coupled optimization problem in MATLAB?
I've got a problem of solving coupled optimization problem in MATLAB. For example, The objective function E(a,b) contains two s...

meer dan 13 jaar ago | 1 answer | 3

1

answer

Answered
How to use the Finite Difference Method to get the gradient?
Now I have problems: My function is: % myfun.m function [F, g] = myfun(x) F = 2*sin(x(1)) + 2*sin(x(2)) + ...

meer dan 13 jaar ago | 0

Answered
How to use the Finite Difference Method to get the gradient?
Sorry, the F should be function F = myfun(x) F = 2*sin(x(1)) + 2*sin(x(2)) + 2*sin(x(3)) + 2*sin(x(4)) + 3;

meer dan 13 jaar ago | 0

Answered
How to use the Finite Difference Method to get the gradient?
Sorry Arnaud, I didn't see you post before. Thanks for your reply. Please read my last post. The same question is if I use 'g...

meer dan 13 jaar ago | 0

Answered
How to use the Finite Difference Method to get the gradient?
Hi Andrew, Thanks very much. I believe it is a very useful tool! I wrote a test function as: % myfun.m functio...

meer dan 13 jaar ago | 0

Question


How to use the Finite Difference Method to get the gradient?
Hi there, I need to calculate the gradient (partial derivative) of a function. I found that Matlab has got a '.p' file/functi...

meer dan 13 jaar ago | 7 answers | 1

7

answers

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