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How to plot RGB histogram of an image into a single 3D slice plot?
image = imread('peppers.png'); R = image(:,:,1); G = image(:,:,2); B = image(:,:,3); subplot(2,2,1); imshow(image); titl...

11일 전 | 2

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i have a vector in lenght 5, i need to check if a sum of 2 or more elements in the vector is equal to another element at the same vector how to do that?
v = [10 5 13 15 28]; m = dec2bin(0:2^numel(v)-1)-'0'; m = m(sum(m,2) >= 2,:); [ism,idx] = ismember(m*v.',v); idx = idx(ism...

11일 전 | 3

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Matrices à coefficients dépendant d'un paramètre
One option: F = @(t)[0,1;t,t^2]; M = F(1) M = F(-1) M = F(2) Another option: syms t M = [0,1;t,t^2]

11일 전 | 0

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Fill in the missing time stamps in measurment data when the system is runnign but not when the system was OFF
Data1 = readtimetable('Data1.xlsx'); Data2 = readtimetable('Data2.xlsx'); Data3 = readtimetable('Data3.xlsx'); Maybe one of t...

11일 전 | 0

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Arrays have incompatible sizes for this operation error while checking dropdown.value not equal to a char value
Don't use == or ~= to compare character arrays, use strcmp, i.e.: if ~strcmp(app.SelectBatteryDropDown.Value,'none') because =...

11일 전 | 0

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Function file doesn`t work
T = readtable('Lab5_R_100_MOhm.txt','VariableNamingRule','preserve') f = T.(1); A = T.(2); Ph = T.(3); figure tiledlayout...

16일 전 | 0

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re-indexing slices of a matrix
A = [1 4 4 4 3 4 6 3 3 3 2 1 3 1 7 2 5 2 9 2 5 1 4 1]; A(:,2) = 1+c...

17일 전 | 0

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I am trying to figure out how to use writetable instead of xlswrite, but the feature is converting my numbers to text. Headers are text.
Excel_Sheet = array2table(Excel_out,'VariableNames',Excel_head); writetable(Excel_sheet,'C:\D_Local\MATLAB\AAA\PhaseII_CA_out.x...

18일 전 | 0

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Selectin elements that satisfy a certain condition with modular arithmetic
N = 6; m = 3; M = dec2base(0:m^N-1,m)-'0'; idx = mod(M(:,1)+M(:,4)+M(:,5),m) == 1 ... & mod(M(:,2)+M(:,5)+M(:,6),m) ...

18일 전 | 0

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Not recognizing any text files in folder using dir(fullfile)
Try folder_path = 'C:\users\power\downloads\star capillary files\'; instead of folder_path = 'C:users\power\downloa...

18일 전 | 0

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How can I use selections from multiple uidropdowns as function inputs?
Here's an example of how it could work: function uidropdown_demo() T = array2table([(1:25).' [10 100].*rand(25,2)], ... ...

19일 전 | 0

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Show coordinates for a 2D point in a table cell
One way to display a vector in a single cell of a uitable is to make it into a string: app.PointsTable.Data = table( ... '...

20일 전 | 0

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Error: Data must be numeric, datetime, duration, categorical, or an array convertible to double.
tic close all; clc; % Declaring Theta and Phi Variables theta = 0:0.1:pi/2; % Phi Values phi_E_Plane = 0; phi_H_Plane ...

20일 전 | 0

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When plotting multiple subplots in the for loop, how do you stop the axes from overlapping?
axes(t) where t is a tiledlayout, creates a new axes in t, so your code is creating a new axes on each iteration of the loop. Th...

20일 전 | 0

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How to create a summation looping through one matrix while keeping another one constant?
[nr,nca] = size(A); ncb = size(B,2); C = zeros(nr,nca); for r = 1:nr for ca = 1:nca for cb = 1:ncb ...

20일 전 | 0

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how convert arraycell to use with writecell
AA = load('matlab_writeCell.mat').bubu % write the cell array to file using space as the delimiter: writecell(AA,'myTextFile.t...

20일 전 | 0

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Trying to make a 2 value sz vector, get Error using tabular/horzcat All input arguments must be tables.
T = table([1;2;3;4],{'ok';'let''s';'see';'here'}) Given the table T above, T(1,:) is another table containing the first row of ...

21일 전 | 0

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Find Selected button in Button Group CallBack
function ManualRewardsButtonGroupSelectionChanged(app, event) selectedButton = app.ManualRewardsButtonGroup.SelectedObject;...

21일 전 | 0

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Code checking error in App Designer, it thinks xxxx.BackgroundColor is a scalar
To avoid the warning, use: if isequal(app.STOPTRIALSButton.BackgroundColor,[0.95 0.33 0.10]) app.STOPTRIALSButton.Backgrou...

21일 전 | 0

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Unrecognized function or variable 'efficiency'
You might get that error if the arguments you give to efficiency() are not correct. For example, calling it like this works: a...

21일 전 | 1

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How to convert a table containing numbers and booleans to a double array?
T = load('example.mat').data3 M = [strcmpi(T.var1,'TRUE') T.var2]

22일 전 | 0

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Error when using resample and smooth surfaces in CAT12
Here are lines 232-242 of cat_surf_info.m: [~,ff2] = spm_fileparts(SPM.xY.VY(1).fname); % find mesh string hemi_i...

22일 전 | 0

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How to edit the red "+" marks on the Nyquist plot
H = tf([2 5 1],[1 2 3]); nyquist(H) h = findall(gcf(),'Type','line') mkr = get(h,'Marker') h = h(strcmp(mkr,'+')); h.Li...

22일 전 | 1

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Retrieving Arrays Within Set of Matrices
x = M{1,4}(:,1); C = cellfun(@(m)m(:,2),M(:,4),'UniformOutput',false); y = [C{:}]; plot(x,y)

23일 전 | 0

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How can I change the axis intervals using powers?
Use semilogx instead of plot. <https://www.mathworks.com/help/matlab/ref/semilogx.html>

23일 전 | 0

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Multiple plots within 1 figure
Try replacing numel(num_days) with num_days, i.e.: figure % make new figure tiledlayout(num_days, 1, 'TileSpacing','comp...

24일 전 | 0

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Outerjoin isn't matching the same values in two different tables
As for why outerjoin() doesn't appear to combine data when the datetimes are the same, the fact is that some datetimes that appe...

24일 전 | 1

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Index exceeds array bounds despite a loop to prevent this?
The problem is that some element of end_idx is greater than 6000 but the corresponding element of start_idx is not greater than ...

24일 전 | 1

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How to display results in the form of graphics in MATLAB GUI? [Bagaimana Cara menampilkan hasil dalam berupa grafik di gui matlab?]
m is a vector, and II is a scalar. When you plot a scalar vs a vector, MATLAB creates one line object for each element in the ve...

24일 전 | 0

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How do I preallocate memory
One way is to do this before the outer loop: clear OutData OutData(length(hucPoly)) = struct();

25일 전 | 0

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