Community Profile

photo

Chunru


Last seen: Today Active since 2013

Matlab user since 1990

Statistics

All
  • Treasure Hunt Participant
  • MATLAB Central Treasure Hunt Finisher
  • Revival Level 2
  • 6 Month Streak
  • Number Manipulation I Master
  • Indexing I Master
  • Pro
  • Knowledgeable Level 4
  • Commenter
  • Sequences And Series II Master
  • Speed Demon
  • Creator

View badges

Content Feed

View by

Answered
Extract Tables from within a cell
s = load("Tables") % i-th tables i = 1; t = s.Tables{i}

ungefär en timme ago | 0

Answered
Populating a vector between upper and lower bound?
e0 = 0; % Initial strain values e_max = 4; % Max strain values inc = 1; % +ve increase, -ve decrease e_t ...

ungefär 3 timmar ago | 0

| accepted

Answered
same number in the vector
h=[0.12;0.1;0.1;0.04;0.04;0.04;0.1;0.1;0.1;0.06;0.1] hu = unique(h); idx = sum(h -hu' == 0) > 1; hrep = hu(idx)

ungefär 3 timmar ago | 0

| accepted

Answered
cluster points within given radius
n = 300; R = 350; x0 = 50; % Center of the circle in the x direction. y0 = 90; % Center of the circle in the y direction. an...

ungefär 5 timmar ago | 0

Answered
Subplot with Geoaxes.
"geoaxes" cannot be the child of subplot. But we can set its position as follows (2x2 grid for example): for i=1:2 for j...

ungefär 7 timmar ago | 0

Answered
Getting the a day of a month based on Vac(day,month)
calendar(2021, 3)

ungefär 8 timmar ago | 0

Answered
convert real numbers to img form
a = 8 b = a*1i % method 1 c = complex(0, a) % method 2

ungefär 19 timmar ago | 1

Answered
Restricting time on graph with given time
a = datetime(2021, 1, 1:365); b = rand(size(a)); plot(a, b) idx = find(month(a)==1); xlim([a(idx(1)), a(idx(end))])

ungefär 19 timmar ago | 1

Answered
How to add a cylinder to a scattered plot
% A = load ('Data.txt'); A = 0.05*rand(8, 4) x = A (:,1 ) ; y = A (:,2 ) ; z = A (:,3 ) ; Amplitude = A (:,4) ; scatter3 ...

ungefär 19 timmar ago | 0

| accepted

Answered
Calculating mean square difference (MSD) of two matrices
Im = [0 252 204; 221 135 58; 156 122 127] Im2 = [169 250 237; 186 196 148; 227 148 4] F2 = sum(sum(mean(Im...

2 dagar ago | 0

| accepted

Answered
how to save variable as txt in a specified location with variable value appearing in the file name
a=1; % amplitude du faisceau gaussien x=linspace(-50,50,100); dx=50/2.355; % widthn f=a*exp(-0.5*(x./dx).^2); [pks, locs, wi...

3 dagar ago | 0

| accepted

Answered
Quiver plot when axes scale are too different result in very ugly plots
load("quiverPlotVariables.mat") whos % You need to scale the vdot and/or psidot so that they are representing % the true orie...

4 dagar ago | 0

Answered
How can delete the variable part?
s = load("T9S11.mat"); x = s.T9S11 x(2:2:end,:)=[]

4 dagar ago | 1

| accepted

Answered
repmat usage for cellarray
data_string = reshape(char(32:127), 3, []) % some characters32 x 3 char aray cell_array=repmat({data_string},1,3) cell_array{...

9 dagar ago | 0

Answered
Append vector into zero matrix
v = zeros(5, 3); x = randn(3,1); n = numel(x); for i=1:size(v, 2) v(i-1+(1:n), i) = x; end v

10 dagar ago | 0

| accepted

Answered
benefits of using "Structs" over "Cells" in MATLAB/Octave?
See the documentation: https://www.mathworks.com/help/matlab/matlab_prog/cell-vs-struct-arrays.html Struct use field name to ac...

10 dagar ago | 0

Answered
Marker edges, line width and legend
xx=linspace(0,12); figure(1) plot(xx,sin(xx),'LineStyle','-','LineWidth',2,... 'Color','red', 'HandleVisibility','off');...

10 dagar ago | 0

Answered
Modify a text file
% Assume that your text file is data.txt s = fileread("data.txt"); s = strrep(s, '4.500000e-001', '0.8000'); fid = fopen('d...

10 dagar ago | 0

Answered
nanstd use in matlab
You are using default normalization "[]", which normalised the std by (N-1). If you want to get 0.0129, you need to change [] i...

10 dagar ago | 1

| accepted

Answered
What's wrong in the code? I cant generate the same graph as the question required.
x = -5:0.1:5; y = sin(x.^2).*exp(cos(x)); plot(x,y)

10 dagar ago | 0

| accepted

Answered
I have problem with while loop.
Make the following change: %while (szb(1,1)~=szA(1,1) && szb(1,2)~=1) while (szb(1,1)~=szA(1,1) || szb(1,2)~=1)

10 dagar ago | 1

| accepted

Answered
Solution found by matlab is too big to use
There are two solution of the equation. You need to select one. The modified code choose the 1st solution. You can always to ...

10 dagar ago | 0

Answered
How to create one common colorbar and colorscale for subplots
You need to add in the following inside the loop for each subplot: caxis([0 60]); % adjust the number 60 or find the value fr...

10 dagar ago | 0

| accepted

Answered
Trying to do product of eigenvalues collected from a matrix
First the difference "e" (as below) will not be perfectly 0 and it is subjected to computational accuracy. Second, the eigen va...

10 dagar ago | 0

Answered
Why does my function return a single value instead of an array? I need it to return an array so I can plot it.
Use ./ instead of / for array operation. [Note that there is division by 0 in your equation] Dn2 = @(n) (1-exp(-1j*pi*n/2))./(...

10 dagar ago | 0

Answered
Using textscan() to get data from a TXT file, but all cells are NaN
Your format specifier is not correct. s=["1,2,3,4" "2,4,5,7"] V = textscan(s(1),'%f %f %f %f','Delimiter',',') V = tex...

11 dagar ago | 0

| accepted

Answered
Reshape a row vector and convert it to a cell array
x = [1:10, 101:110, 11:20, 111:120]; x = reshape(x, [20, 2])'; C = mat2cell(x, [1 1], [10 10])'

11 dagar ago | 1

Answered
How to fix this error in interp1?
R = 1e3; % resistor value [Ohms] C = 1e-6; % Capacitor value [Farads] H = tf([R*C,0], [R*C,1]); % plot a bode plot (3dB frequ...

11 dagar ago | 1

Answered
Precision number throughout scripts and functions.
You can use "format" command to specify a format such as short, long, shortE, shortG. "doc format" for more information. If yo...

12 dagar ago | 0

Answered
Rotating 3D data
clc; clear all; close all; x = linspace(-10,10,49); y = linspace(-10,10,44); [X,Y] = meshgrid(x,-y); Z = zeros(44,49); Z = ...

12 dagar ago | 0

| accepted

Load more