Community Profile

# Turlough Hughes

##### Last seen: 4 dagen ago
148 total contributions since 2019

View details...

Contributions in
View by

Finding Minimum Distance Between Points to Find Indexed Variable
If you don't have the statistics and machine learning toolbox you can do the following: [~,idx] = min(abs(dtamatrix(:,2) - Feli...

26 dagen ago | 0

| accepted

Create multiple arrays with different names and specific data
It is possible to do exactly what you asked but that is considered a bad coding practice (explanation here). Why don't you st...

28 dagen ago | 0

| accepted

Creation of an automatic polyline
It looks like you have a binary image but you uploaded it as a .jpeg, I have included 3 lines to "workaround" and get back to an...

28 dagen ago | 0

| accepted

How to crop a circle from an image?
Try the following tutorial: % Setup clear close all clc inputImg = imread('cameraman.tif'); % Show demo Image hf = figu...

28 dagen ago | 0

| accepted

calculating area and perimeter for pap-smear image
There are numerous ways you could segment the nucleus, I elected here to threshold based on R,G,B values in the image. To work o...

29 dagen ago | 0

| accepted

I want to extract values from second column of the matrix which correspond to the range 6 to 7 of the first column. How to do it?
Let's say your matrix is called M, then you can extract rows from column 2 corresponding to those in column 1 which are between ...

ongeveer een maand ago | 0

| accepted

3-D matrix operations
Here's the method I was suggesting. The idea is to take the first value and add half the difference (effectively interpolating) ...

ongeveer een maand ago | 0

You could use the readmatrix function as follows: filename = 'My2.TXK' opts = detectImportOptions(filename,'FileType','text') ...

ongeveer een maand ago | 0

| accepted

Extract data (timestamps) from csv file
You could read the file in as a character vector with fileread and then use regexp as follows: filetext = fileread('Info.csv');...

ongeveer een maand ago | 0

| accepted

How to Interpolated data outliers
Generate some sample data: C = (1:3630).'; idxout = randperm(3630,500); % random index for outliers C(idxout) = C(idxout)+200...

ongeveer een maand ago | 1

| accepted

matlab code How to dived 400*500 image into 40*50 and calculate object area in each block. put all blocks in one imafe
You can find out which blocks are crops (according to your definitions) as follows: B = blockproc(Img, [40 50], @(block_struct)...

ongeveer een maand ago | 0

By using computervision toolbox I'm trying to play a video in MATLAB using this code, but only one frame is displayed on the window
You could do the following: a = vision.VideoFileReader('spur gear.avi' , 'VideoOutputDataType', 'double'); VideoPlayer = visio...

ongeveer een maand ago | 0

How can I compare distance (not only between two points, but also a set of points)
As I understand it, you have 10 by 100 points represented in variables X and Y which are both 10 by 100 matrices. A given point ...

ongeveer een maand ago | 0

| accepted

Simulation Domain (Region)?
I would say what you want is the meshgrid function. Have a look at the <https://uk.mathworks.com/help/matlab/ref/meshgrid.html d...

ongeveer een maand ago | 0

Question

Is there a property to modify the marker size of a drawline graphics object?
I'm using the drawline function and wondering if it would be possible to modify the marker sizes? If for example we have the fol...

ongeveer een maand ago | 1 answer | 0

### 1

How to reshape a single column matrix in the following example?
If you write the following you can directly modify the CT_matrix, no need to separate it out into a column vector: ind_lte_20 =...

ongeveer een maand ago | 0

| accepted

Take the sum of an array until a limit is reached determined by a vector of the same length
For a single result you could write the following to get the sum for an arbitrary track length of 10 mm, and you have the option...

ongeveer een maand ago | 1

| accepted

Numbering options in a table
You could change Line 58 to the following: disp(crossSectionInfo.Resistance(str2double(result)))

ongeveer een maand ago | 0

I don't get the correct output from my function
The function is correct. However, because this function outputs very large numbers depending on your range (in terms of absolut...

ongeveer 2 maanden ago | 0

| accepted

Question

How could I make a callback that updates when the user moves an roi?
I'm making an app which loads and displays the same image side by side in app.UIAxes and app.UIAxes2. I have a rectangle roi obj...

ongeveer 2 maanden ago | 0 answers | 0

### 0

To determine the number of distinct pairs of value(s) in each column of matrix.
You could do the following. First find rows where there is only one other element equal to the element in the first column idx ...

ongeveer 2 maanden ago | 0

| accepted

How to print contents of nested cell array to uitable?
I think the best thing to do is make another cell array, B, as follows: nRows = max(cellfun(@numel,A)) nCols = numel(A) B = c...

ongeveer 2 maanden ago | 0

| accepted

clustering nearest 5 elements of a data
You could do the following which is to find the 5 minimum absolute differences for each element in core. [~,idx] = mink(abs(dat...

ongeveer 2 maanden ago | 1

| accepted

Merge all rows in a cell into one row
Similar to numeric arrays writting NewC2LatLon(:) returns all the all elements of the array in a single column. However, I think...

ongeveer 2 maanden ago | 0

| accepted

find mean of 2d slice in 3d segmented volume
Ok I think I know what you want. Looking at the documentation for roipoly, I assume you got a binary image representing the regi...

ongeveer 2 maanden ago | 0

Finding the closest point on a line to another point
Solving for the discrete points is actually a lot easier. Using your data as follows: line.x = [1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5,...

2 maanden ago | 0

| accepted

summing elements of an array until a value appears
Say your array is called data: q=2; data = [1 2 3; 1 3 2; 2 1 3; 1 0 3; 1 2 2]; % Includes rows without any values = q, and re...

2 maanden ago | 0

Matlab corresponding values between matrices?
This will show values of B that exist in A and which are also less than N. result = B(ismember(B,A) & B<N) If you need find ...

2 maanden ago | 0