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How to convert interval from to scalar. The problem is:
Do you mean a loop over a number of interals? k = -0.5:.05:-0.1; %(interval) for i=1:length(k) prob.Objective = k(i) * f...

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how to convert vector char to matrix char ?
You don't need to do anything. X is already an array. X = 'ABCDEFGHIJKLMNOPQRSTWXYZ' X(2) X(1,2)

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How can I write a magic(5) matrix to a text file with special delimiters?
x = magic(5); fid = fopen('test.txt', 'w'); fprintf(fid, '%f\n', x); % try different format here fclose(fid) type('test.t...

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with a function y(x) how can i plot 2y(3-x)
syms x y = piecewise(x<0, 0.1*x^2, x>0, .5*x) g = subs(y, x, 2*x) fplot(g)

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Does "insertText" not support Chinese fonts? How do I add Chinese fonts to my images?
I = imread('peppers.png'); % Find out the Chinese Fonts installed in your system % listTrueTypeFonts I=insertText(I,...

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How do I only display the rows for when column 1 is > 0 when I have 4 columns with corresponding data to the first column
a = [-0.00502163330810033 -0.00535602354270113 -0.00175905055456396 -0.00195122013126169 0.0191518806112861 0.02329682192...

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Bubble sort error line 1
You code can run. if you use "input", key in the following "[1 3 2 5 2]" without quotes. %cases = input('Enter cases with [ ] ...

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How to plot a piecewise function on Matlab?
You can try the another function. syms f(x) f(x) = piecewise(x<=5, 1-sqrt(5-x), 5<x<7, 1, x>=7, 1-sqrt((x-7)/3) ) fplot(f, [0...

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"Fixed point" binary sequence for values between 0 and 1
% Given x in [0, 1) x = 0.5234567 % Number of bits in binary (bits after .) n = 32; b = dec2bin(x*2.^n, n); b=['0.' b]

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finding the max number?
x=[1 3 5 7] y=x.^2+5 % use .^ here [~, idx] = max(y) % idx the where y is the max x(idx) ...

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I need to find the length of an array for values > 0
a = [1 2 0 3 -1 2 0]; n = sum(a~=0)

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Partial pivoting row swapping
a=[1 4 3 5;2 0 2 6;1 1 0 5;1 2 3 4]; b=[5;6;7;10] ab=[a b] for i=1:size(ab, 1)-1 % pivoting [~, imax] = max(abs(ab(...

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Right align text in subtitle
figure; plot(randn(10,1)) t = title({['\fontsize{14}','First line']; ... ' '}, ... 'FontWeight','Normal'); axPo...

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m=1:24*(T^-1);
T = 2 % Given a number T T^-1 % T^-1 is 1/T m=1:24*(T^-1) % m is from 1 to 24/T=12 with default step of...

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What is the easiest way to remove a vector from a matrix?
a = magic(4); a = [a; a(1, :); a]; % 1st 5th and 6th rows are the same a y = a(1, :); % the vector inpu...

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Issues with contour plot of f(x, y) = x/y.
You just need to remove the level=0 which result in x=0 (not y=0) being plotted. x = -5:.1:5; y = -5:.1:5; [X,Y] = meshgrid(x...

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reading 10 values randomly from txt file
% Generate the text file n = 200; % 5000 x = randi(100, n,1); fout = fopen('test.tx', 'wt'); fprintf(fout, '%f\n', x)...

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Can someone please help! I cannot plot this graph.
x=[-0.1:.001:0.1]+eps; % your original x has only 1 point without the step. % In addition, x can be zeros abd the y is not d...

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Adding sequence of data
a=[1 2 3 4 5 6]'; c = sum(reshape(a, 2, []))

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Plot date labels in x-axis
xData = ["01/22" "01/23" "01/24" "01/25" "01/26" "01/27" "01/28" "01/29"] yData = [557 655 ...

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How can i create this specific matrix??
i=3; j=4; A = kron(eye(j), ones(1,i))

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Dynamic colorbar change with window size corresponding with different data area
You can use the callback function of zoom to customize what you want. z = peaks(200); hi = imagesc(1:200, 1:200, z); colorbar...

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Adjusting width of horizontal colorbar
ax1 = gca; imagesc(peaks(80)) hcb=colorbar('SouthOutside'); ax1Pos = ax1.Position; pos = hcb.Position; pos(4) = 0.5*pos...

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How to set the order in iircomb filter?
The order of the IIR notch filter (using iircomb) is determined by the number of notches (equal to filter order plus 1). The sa...

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How to check adjacent data with logical indexing?
A=magic(5) idx1=A>20 idx1_right = circshift(idx1,1,2) idx1_left = circshift(idx1,-1,2) idx2 = idx1 & (A(idx1_left)>18 | A(...

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How to catch 'not enough input arguments' error?
Use try-catch: try spn=spans(index) catch whos index % show the inforamtion of the variable index disp(index)...

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How can I find a section of a graph?
% plot the curve t = 0:.1:5; x = cos(2*pi*3*(t-2.5))./(1+(t-2.5).^2*2); plot(t, x, 'b-'); % peak around 2.4-2.6 idx = find(...

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Rectangular Box plotting from four co-ordinate
caustom_plot=plot(x_points([1:end 1]),y_points([1:end 1]),'k','Linewidth',2);

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I need help to how to solve this
r_shape = [-1 0; 0 -1; 1 0; 0 1]; t_shape = [-0.5 -0.866; 1 0; -0.5 0.866]; plot(r_shape([1:end 1], 1), r_shape([1:end 1], 2)...

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Step response error when using step
Make the system casual (output does not depend on future input) before using step: s=tf('s'); sys=((-1.0024*(s+55.86)*(s+0.498...

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