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Question

Averaging values within bins

Hi, I have the two arrays x and y (attached), which I plot with plot(x,y). This is creating "bins" of width 5: <</matlabc...

5 years ago | 2 answers | 0

### 2

answersQuestion

Constructing the matrix for a color-coded 2d matrix visualization

Hi all, *I have the following:* - Two distance vectors: Each of these vectors contains the distances of all points (pixe...

5 years ago | 0 answers | 0

### 0

answersQuestion

Interpolation of noisy data

Hi, I have the following plot (can be plotted with plot(B,C) based on the attached mat file): <</matlabcentral/answers/u...

5 years ago | 1 answer | 0

### 1

answerQuestion

Finding an array of numbers in an array

Hi I have the attached coords_17 array, which is 2092 x 3 dimensional. Within this array, I want to find say the row which c...

5 years ago | 1 answer | 0

### 1

answerQuestion

Extracting numeric values from character array

Hi, I have a character array "coords" (containing 3D coordinates), which looks something like this: val = '[ 48. -...

5 years ago | 2 answers | 0

### 2

answersQuestion

General linear model: Model fit

Hi I am using Matlab's GLM function: [b,dev,stats] = glmfit(...) Where can I get an output of the overall model fit (...

6 years ago | 1 answer | 0

### 1

answerQuestion

condition on two arrays

Hi, Given three arrays x,z and y: z = [5,5,7,7,7,11,15,15,29,29,29] y = [1,2,3,2,1,1,1,1,2,3,1] x = [5,7,29] x ...

6 years ago | 1 answer | 0

### 1

answerQuestion

colormap for a matrix

Given a matrix: 0 0.0104 0.0027 0.0104 0 0.0163 0.0027 0.0163 0.0000 I am using...

6 years ago | 1 answer | 0

### 1

answerQuestion

reshaping cell containing double arrays

Hi, I have (as an example) the following cell array: test = 1×4 cell array [40×1 double] [40×1 do...

6 years ago | 3 answers | 0

### 3

answersQuestion

load files when only partial filename is known

Hi I am looking for a way to load all files which start with a certain string, say "Subject_1_Part_1.....mat". "..." would b...

6 years ago | 0 answers | 1

### 0

answersQuestion

Crossvalidate (SVM)-classifier

Hi, I have the following code which runs fine as long as I have "crossval" set to "off". However, I would like to crossvalidate...

6 years ago | 0 answers | 0

### 0

answersQuestion

Using "hold on" - bars do not have the same width

Hi I seem to have the strange problem that when I plot the following, the bars of the two histograms do not seem to have the ...

6 years ago | 1 answer | 1

### 1

answerQuestion

How to fit a (left) skewed distribution

Hi, Currently, I am using the following code to fit distributions to my data: pd = fitdist(mydata,distribution) x_val...

6 years ago | 1 answer | 0

### 1

answerQuestion

Merging different arrays depending on condition

Hi I have a following vector called cases as follows: cases = [1,4,4,3,1,2,2,4,3,4,4,...]; Additionally, I have four ar...

6 years ago | 1 answer | 0

### 1

answerQuestion

Systematically add entries to vector array

Hi, Given I have a vector as for instance: [ 1 3 5 7 1 3 ...] I want to add twice the number "8" after each entry, hence w...

7 years ago | 2 answers | 0

### 2

answersQuestion

Adding legend to reference line in a plot

Hi, As you can see below, I am plotting bar graphs. There is additionally also a red reference line in the plot. Now I want ...

7 years ago | 0 answers | 0

### 0

answersQuestion

Random sampling more elements than data contains

Hi, I am familiar with the datasample function, however, datasample does not allow for sampling more from a vector x than the n...

7 years ago | 1 answer | 0

### 1

answerQuestion

Averaging over a symmetric matrix

Hello, Given an m,n matrix, I want to create a new matrix by doing the following: The element (i,d) and the element (d,i) sh...

7 years ago | 1 answer | 0

### 1

answerQuestion

Cell containing double arrays to cell

Hi, Having (for instance) a 1x3 cell which contains in each entry a double array of a different size. For instance: cell(1...

7 years ago | 1 answer | 0

### 1

answerQuestion

repelem substitute for older matlab version

Hi, I want to do the following (what usually repelem does, however an older version of Matlab does not seem to have it): G...

7 years ago | 2 answers | 0

### 2

answersQuestion

Changing order of elements of one vector depending on the order of another vector

Hi I have two vectors, say: a = [0.1 0.4 0.2 0.9 2] b = [5 10 11 2 4] I want to order a, such that the vector would ...

7 years ago | 1 answer | 0

### 1

answerQuestion

Sampling with a distribution from the elements of a vector

Hi, Say I have an 1xm vector with any kind of numeric entries (for instance doubles or integers). As an example, I would have...

7 years ago | 1 answer | 0

### 1

answerQuestion

find index conditional on two vectors

Hi, I have two vectors = resp = [1 2 3 1 1 2 3 3 3 1]; fing = [1 2 1 2 1 1 1 2 2 1]; How do I find the indices of *r...

7 years ago | 2 answers | 0

### 2

answersQuestion

Bin data and fit curve

Hi, I have the following data: - A vector of physical stimulus properties, something like: [0.8, 0.7, 0.56,0.4,....,0.01] ...

7 years ago | 1 answer | 0

### 1

answerQuestion

Applying function only to certain files in directory

Hi, I have the following code, which applies the function 'load_nii' to files from the current directory which I select manual...

7 years ago | 1 answer | 0

### 1

answerQuestion

Reformating cell array of chars

Hi What I want is the following: I have 4D-files, I want to extract the names of the 3d slices in these files. Say I have a...

7 years ago | 1 answer | 0

### 1

answerQuestion

Different colors for plotting bar plots

I plot three group of bars with errorbars as follows - but the problem is that I want to set for each group the colors different...

7 years ago | 0 answers | 0

### 0

answersQuestion

Group bar in histogram, add label

Hi, I have the following code for my histograms already: mean_accuracy = [0.37,0.44,0.67,0.39,0.64,0.64]; % mean acc...

7 years ago | 1 answer | 0

### 1

answerQuestion

Using loop to extract fields from a struct

Hello I am using the following code: names = fieldnames(data); % extract names of features for i = 1:5 class(i) = ...

7 years ago | 3 answers | 1

### 3

answersQuestion

Finding the best fitting distribution - bars plotted with gap

Hi I am using the function allfitdist to find the best fitting distribution(s) to my data (Allfitdist was once recommended on...

7 years ago | 0 answers | 0