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# Xen

##### Last seen: 3 mois ago
25 total contributions since 2014

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Question

Inequality constraints in least-squares fitting
I would like to perform least-squares fitting with inequality constraints that involve the parameters in both sides, in addition...

6 mois ago | 0 answers | 0

### 0

Question

Change boxplot outlier shape
Is there a way to change the shape of the outliers when plotting boxplots? The default is the cross. Thanks

environ un an ago | 1 answer | 0

### 1

Question

Linear and power fitting of original and transformed data not reproducible
I am fitting two variables that seem to have a power relationship (y=a*x^b). If I log-transform both variables, they should have...

plus d'un an ago | 0 answers | 0

### 0

Question

Solve system of differential equations with vector input
Assume that I want to solve the system of equations below for u and v. A and B are known numbers (say, 1 and 2 respectively) and...

plus d'un an ago | 1 answer | 0

### 1

Question

dicomwrite does not preserve original metadata
Hi, I am reading the dicom info from a DICOM file and writing them to another DICOM file using dicomwrite(image, path, imagein...

plus d'un an ago | 0 answers | 0

### 0

Question

MATLAB has encountered a problem when calling a MEX-file
Hi. I am calling a MEX-file (.mexw64) on Windows 10, MATLAB 2018b, and MATLAB is crashing. This is a 'well-developed' code and i...

plus de 2 ans ago | 0 answers | 0

### 0

Question

Plotting curved confidence intervals for linear regression
I am using |coefCI| function to estimate the confidence intervals of a linear model. I can plot this and get linear confidence b...

environ 3 ans ago | 1 answer | 2

### 1

Question

Nonlinear least-squares fitting of curve described by PDEs
Hi people. I would like to fit a curve described by a system of two 2nd degree partial differential equations (PDEs) using |lsqn...

presque 4 ans ago | 1 answer | 0

### 1

Question

Skip lsqnonlin run if error
Hi guys. I am using |lsqnonlin| for some fitting, and I am running a loop where I change the initial parameter values to determi...

presque 4 ans ago | 1 answer | 0

### 1

Question

Remove lines outside plotted circle
Hi people. I am plotting a circle using the rectangle function and then I am plotting several lines in the same plot using th...

environ 4 ans ago | 0 answers | 1

### 0

Question

Save grayscale multipage TIFF without affecting intensity values
I feel like this has a very simple solution but I can't find it! I load some TIFF stacks of the same size, estimate the mean sta...

plus de 5 ans ago | 0 answers | 0

### 0

Question

Connectivity in binary 3D matrix
I am using bwconncomp to find the largest connected component in a 3D binary matrix (volume). However, it doesn't work the way I...

plus de 5 ans ago | 1 answer | 1

### 1

Question

Abort roipoly in GUIDE
I created a GUI with axes that show the "slices" of a 3D matrix ( _vol_); a slider is used for skipping through the slices. In t...

plus de 5 ans ago | 1 answer | 0

### 1

Question

How to find the "true" perimeter of objects in a binary image?
Say, there is an object consisting of 3 pixels next to each other (■■■). If I calculate the perimeter using sum(sum(bwperi...

plus de 5 ans ago | 1 answer | 0

### 1

Question

Sort clusters using K-means by intensity
Hello everyone. I am using K-means to segment some grayscale images. Unfortunately, the values of the generated clusters are no...

environ 6 ans ago | 1 answer | 1

### 1

Question

GUI error: Undefined function 'A_GUI' for input arguments of type 'char'.
Ok, I know this might not have been the best thing to do, but I created a GUI (say A_GUI) and accompanying m functions to do som...

environ 6 ans ago | 1 answer | 0

### 1

Question

Identify similarly named images from different folders
Lets say I have folder A with five images (named: '5', '2', 'pic', '4', 'photo'), and another folder B with two images (named: '...

plus de 6 ans ago | 1 answer | 0

### 1

Question

Distance measurement using edge detection
Hi all, I would like to have an expert opinion on this problem. We use a simple rectangular phantom to perform quality assessme...

plus de 6 ans ago | 2 answers | 0

### 2

Overlay two images of different type
Thanks for your suggestions guys. After some experimentation, I have eventually found out how to do exactly what I needed (and i...

plus de 6 ans ago | 0

| accepted

Question

Call a portion of one function from another one
I wrote a relatively large code for analyzing an image, which contains several smaller functions that are called in a big loop. ...

plus de 6 ans ago | 1 answer | 0

### 1

Question

Overlay two images of different type
I have a uint8 image and another logical image of the same dimensions, containing edges found from the first one. I want to make...

plus de 6 ans ago | 5 answers | 0

### 5

Question

Defining multiple arrays at once?
I am writing a code which requires a few zero arrays of the same dimension for a summation process in a loop, and I was wonderin...

plus de 6 ans ago | 1 answer | 1

### 1

creating 3d array from images
By the way, what's the best way for including the I=cat(...) into the loop? Thanks.

presque 7 ans ago | 0

creating 3d array from images
Thanks for the help guys! It solved the problem. Yes, C3 was a typo. It really is strange though, because B1 was not defined an...

presque 7 ans ago | 0

Question

creating 3d array from images
Hello, I am trying to read and copy a series of 5 images into a 3d array, where each image should have a 'thickness' of 13 pixel...

presque 7 ans ago | 4 answers | 0