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**Content Feed**

Differentiate between oval and circle shaped images using MATLAB

You may try function bwconvhull by adding the following 2 lines. However, I am not sure how robust it is for other pictures. B...

ungefär 19 timmar ago | 0

how to join the values of different cells in different columns in one cell ?

Suppose you read the file using function readtable and the name of the table is T, then variable C in the following will give yo...

ungefär 19 timmar ago | 0

How to change the color of my plots

Just put the color code for the markers. May try the following: for n=.3*N:N x=(1-d).*x.*exp(a.*(1-x).*((x/0.2)-1))+d.*y.*...

en dag ago | 0

| accepted

Fix "index exceeds number of array elements"

j is going to be the index and hence theta_x should not be use Try the following: for j=1:length(theta_x) s(j)=L1(j)^2+L2...

en dag ago | 0

| accepted

How to use writematrix to create a single xlsx file with multiple sheets with name of the analysis file?

Use function <https://www.mathworks.com/help/matlab/ref/fileparts.html fileparts> to extract the name instead of the entire file...

4 dagar ago | 1

find ID's of repeated values in array

You may use a for loop as follows: idx = zeros(1,length(t1)); for k = 1:length(t1) idx(k) = find(ismember(t2,t1(k))); en...

4 dagar ago | 0

| accepted

cration of contents inside the cell array of uniform size

May try the following to add NaN to the new rows load('data.mat'); addrow = cellfun(@(x) 8-size(x,1),Data,'uni',0); result = ...

6 dagar ago | 0

Why is it not working?

Index jj is not defined inside the for-loop, i guess the code should be modified as the following for ii=1:26 for jj = 1:2...

14 dagar ago | 0

| accepted

Index in position 2 exceeds array bounds (must not exceed 1) ?

One of the input argument is variable 'c' and you use the same name again for the size of variable 'a' and hence gives you an er...

15 dagar ago | 1

| accepted

Area fill under a curve

Check the MATLAB documentation about area. w is a function handle and it is not supported. Try the following: x=linspace(0,2*...

15 dagar ago | 0

Separate 24 digits single array of data loaded from file into 6 different arrays

Try the following by converting the text using function num2cell. clear; clc; fid = fopen('data.txt'); d = textscan(fid,'%s')...

20 dagar ago | 0

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Edge detection in gradient images

Try Otsu's method rawdata=imread('capture 1.png'); I = rgb2gray(rawdata); level = graythresh(I); BW = imbinarize(I,level); ...

20 dagar ago | 1

what happened to my install ?how to solve this proplem?

If your installation runs on WIndows, please check whether you have adminstrator right or not. On the other hand, you may refer...

23 dagar ago | 0

Plot 3D surface from Excel .csv File

You may extract the data using function readmatrix. clear; clc; rawdata = readmatrix('data.csv'); x = reshape(rawdata(:,1),[]...

23 dagar ago | 1

| accepted

How to write new data to the existing excel file?

You may replace the entire loop by using 'Append' as follows: writetable(T,'Results.xlsx','UseExcel', true, 'WriteMode','Append...

24 dagar ago | 0

Plots with different colors

Put the index and hold on inside the loop figure(1) for i=1:length(Re) if Re(i) < 2*10^3 loglog(Re(i),f(i),'xb','Lin...

27 dagar ago | 0

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How can I set the colorbar for a specific series of value ?

Adjust the Limits and Ticks as follows: cb = colorbar cb.Limits = [300 2100]; cb.Ticks=300:300:2100;

27 dagar ago | 0

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Best fit line in log-log scale

Like this? p=polyfit(log(X),log(Y),1); y=polyval(p,log(X)); figure(1) loglog(Re,f,'x','LineWidth',1) hold on loglog(X,exp(...

28 dagar ago | 0

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How to sort a 3D matrix according to the value of each element?

If I understand correctly, you would like the larger value(s) in the last rows and the largest one on the bottom right hand cor...

28 dagar ago | 0

using matlab fileread function for some portion of text data

Use function textscan to read the first 50 lines and the header will be stored on a cell array. fid = fopen(fullfile(filepath,f...

29 dagar ago | 1

| accepted

Subplot arrangement: 6 by 2 plot

Try this: figure(1) subplot(6,2,1) plot(1:10,randi(10,1,10)) hold on subplot(6,2,3) plot(1:10,randi(10,1,10)) subplot(6,2...

29 dagar ago | 0

| accepted

How to label the centers of circles according to their position on axes?

Try this and still using function text: clear; clc; I = ones(400,600); sorted_centers_x = repmat(50:100:550,1,4); sorted_cen...

29 dagar ago | 1

| accepted

How to use imwrite from dicom to png

It may contains more than one image and hence you need to save it one by one: Following code for your reference: [I, cmap] = d...

29 dagar ago | 0

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Specific conditions for array elements

You may simply combine them together as follows: B = (A>10)*(9^2)+(A==10)*0+(A<10)*(20^0.5);

30 dagar ago | 1

Replacing Empty Cells by NaN

T.Var1=NaN(size(T.Var1,1),1); % Replace T.Var1 by NaN T.Var16=NaN(size(T.Var16,1),1); ...

30 dagar ago | 0

How do I concatenate the same table n-times vertically?

Try this: biggertable=repmat(T,1000,1);

ungefär en månad ago | 0

| accepted

I'm working on an example where I'm getting a logical error possibly. I want to replace every element of a matrix by the minimum of its neighborhood.

The value of N will be very large in the loop and gives an error. Try the following to replace each element of the matrix by by...

ungefär en månad ago | 0

| accepted

Unrecognized function or variable 'wavread'.

It requires Signal Processing Toolbox, type 'ver' in the Command WIndow to check whether you have the right Toolbox or not.

ungefär en månad ago | 0

stl file rendering is not working can you help me to solve it?

You may need <https://www.mathworks.com/help/matlab/ref/trisurf.html trisurf> or <https://www.mathworks.com/help/matlab/ref/trip...

ungefär en månad ago | 0

How to extract matrix from cell?

Try this: iwant=cat(4,myCell{32:59});

ungefär en månad ago | 0

| accepted