Answered
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...

4 years ago | 0

Answered
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)

4 years ago | 2

| accepted

Answered
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...

4 years ago | 1

| accepted

Answered
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)

4 years ago | 1

| accepted

Answered
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,...

4 years ago | 0

| accepted

Answered
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...

4 years ago | 0

Answered
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 [ ] ...

4 years ago | 0

| accepted

Answered
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...

4 years ago | 0

| accepted

Answered
"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]

4 years ago | 0

Answered
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) ...

4 years ago | 1

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

4 years ago | 0

| accepted

Answered
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(...

4 years ago | 0

| accepted

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

4 years ago | 0

| accepted

Answered
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...

4 years ago | 0

| accepted

Answered
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...

4 years ago | 0

Answered
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...

4 years ago | 0

| accepted

Answered
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)...

4 years ago | 1

Answered
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...

4 years ago | 0

| accepted

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

4 years ago | 0

| accepted

Answered
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 ...

4 years ago | 0

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

4 years ago | 0

| accepted

Answered
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...

4 years ago | 0

| accepted

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

4 years ago | 0

| accepted

Answered
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...

4 years ago | 0

| accepted

Answered
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(...

4 years ago | 0

| accepted

Answered
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)...

4 years ago | 0

| accepted

Answered
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(...

4 years ago | 1

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

4 years ago | 0

Answered
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)...

4 years ago | 0

Answered
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...

4 years ago | 0