Community Profile # Joaquim

20 total contributions since 2014

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Question

Piecewise evaluation of mean absolute error an plotting
Hello everybody, I have two vectors, A and B. A represents the reference and B a noisy reconstruction. I want to calculate...

3 years ago | 1 answer | 0

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Question

plotting a 2nd order matlab
Hello everybody, I'm trying to plot a 2nd order polynomial. I have a vector X and the y values are determined by the equation...

3 years ago | 0 answers | 0

### 0

Question

How the concatenate every combination of vectors?
Hello everybody, I have 6 vectors and i want to concatenate every combination between these vectors in one individual vector....

3 years ago | 1 answer | 0

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Question

AIC in a Gaussian Mixture Regression
Hello everybody, I am trying to fit a gaussian mixture model to a set of predictor variables. I'm not using the built-in functi...

3 years ago | 1 answer | 0

### 1

Question

How to compute AIC using Gaussian Mixture Regression?
Hello everybody, How can I manually compute the AIC for a Gaussian Mixture Model, with 2 predictor variables and one response v...

3 years ago | 1 answer | 0

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Question

How to calculate the mean and standard deviation of the 27 neighbourhood of a voxel in a 3D matrix?
Hello everybody! I have a matrix 336*336*65. I want to create two new matrices of the same size, one representing the mean va...

3 years ago | 1 answer | 0

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Question

Display each object in a binary image separately
Hello everybody, I have an image, with undefined number of objects, just like the image below. <</matlabcentral/answers/up...

3 years ago | 1 answer | 0

### 1

Question

Predicting values using a Gaussian Mixture Regression Model
Hello everybody, I'm trying to predict values using the parameters acquired from a Gaussian Mixture Regression model. I used th...

3 years ago | 0 answers | 0

### 0

Question

Applying a logistic regression to two vectors
Hello everybody, I have 2 vectors, Y and X, being Y dependent on X. I want to make a regression through a logistic curve, in or...

3 years ago | 0 answers | 0

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Question

How to minimize the 12th norm of a difference vector?
Hi everybody, I have two vectores, lets say x and y. I calculate the difference vector d=x-y; I want to minimize d through th...

3 years ago | 1 answer | 0

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Question

How can I make a joint histogram of 3D matrices?
Hello everybody, I'm trying to make a joint histogram of 3D matrices. Does anybody have any idea how to make it. I applied t...

3 years ago | 0 answers | 0

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Question

How to convert .mat files into .mhd image?
Hello everybody, I have some medical images stored in .mat files that I would like to convert to .mhd files in order to uploa...

3 years ago | 1 answer | 0

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Question

Different values in matrix and in the plot of image
Hello everybody, I have a matrix A with double precision, 198*198 of size.Ploting the image using imshow(A,[]) and search usi...

3 years ago | 1 answer | 0

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Question

How to open .raw files?
Hello everybody, I would like to ask how can I open a .raw file. I have two images of different types. The parameter of the fi...

3 years ago | 1 answer | 0

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Question

How to open .raw files in Matlab
Hi everybody, I have a 3D image stored in a .raw format, 32 bits floating point, uncompressed. The dimensions are 288x288x400. ...

3 years ago | 1 answer | 0

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Question

Filtering on a graysclae image preserving the edges
Hello everybody! I have a grayscale image and I want to apply a filter in order to obtain a smoother variation of intensity acc...

3 years ago | 0 answers | 0

### 0

Question

Plotting 3D- matrix values against other 3D-matrix values
Hi! I have two 3D matrices with the same size, x and y. I want to plot the values of y against the values of x. How can I do it...

3 years ago | 1 answer | 0

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Question

.mat file with structures
Hello everyone! I'm trying to create a .mat file with a struct inside. Something like this: field2='TE'; value2=TE; fiel...

4 years ago | 2 answers | 0

### 2

Question

Scatter plot for two 3D images
How can i do a scatter plot applied to two 3D images? I mean, I want to compare the values of 2 3D-images putting them on a scat...

6 years ago | 0 answers | 0