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Awarded to Simon Chan on 18 Jul 2021
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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...
2 hours ago | 0
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 = ...
2 days 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...
10 days ago | 0
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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...
11 days ago | 1
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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*...
11 days 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')...
16 days 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); ...
16 days 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...
19 days 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),[]...
19 days ago | 1
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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...
20 days 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...
23 days 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;
23 days 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(...
24 days 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...
24 days 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...
25 days ago | 1
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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...
25 days 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...
25 days ago | 1
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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...
25 days 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);
26 days 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); ...
26 days ago | 0
How do I concatenate the same table n-times vertically?
Try this: biggertable=repmat(T,1000,1);
26 days ago | 0
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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...
27 days ago | 0
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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.
27 days 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...
28 days ago | 0
How to extract matrix from cell?
Try this: iwant=cat(4,myCell{32:59});
28 days ago | 0
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How to delete duplicates and replace values in an array?
Create a table and use function groupsummary Item=["White Onion";"Potato";"White Onion";"Fruit"]; T=table(Item,'VariableNames'...
28 days ago | 0
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How to request a specific user input?
May do this ina while loop prompt = 'Please enter 1 for EXP1 and 2 for EXP2:'; % ask EXP = input(prompt); while (EXP ~= 1 && ...
28 days ago | 0
How can I write a for loop to do algebra over multiple arrays?
Try this: A = arrayfun(@(x) x.*time./(c+d), a, 'UniformOutput', false) result = cell2mat(A')
28 days ago | 0
How does one use bookmark feature in Livescript?
Refer to the following, a cyan marker will appear: Check this : Bookmarks
28 days ago | 0
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How to label axis appropriately in subplot
Just tell it to output x-label when the number of subplot > 10 x=1:8; for k = 1:15 data = rand(1,8); subplot(3,5,k)...
29 days ago | 1
