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Chunru


Last seen: 13 Tage vor Aktiv seit 2013

Matlab user since 1990

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Beantwortet
How do I highlight a certain area between two lines?
% Generate some data t = 0:.1:10; y = sin(t); plot(t, y); hold on % highlight a portion of data idx = t>6 & t<9; area(t...

etwa 2 Monate vor | 0

Beantwortet
How to calculate a running value of a function for every 30 samples?
Nt= 50; % Total samples d = randn(1,Nt); ratioCompute = movmean(d, 30)

2 Monate vor | 0

Beantwortet
How to count number of ones and zeros in a binary number?
% if you use char to represent binary numbers A='1100'; mod(sum(A=='1'), 2) == 0 % if you use double to represent binaray num...

2 Monate vor | 0

Beantwortet
Receiving a "Array indices must be positive integers or logical values." message
change the for loops into: x = 1:.1:10; results = abs(q) ./ (4*pi*e0*x.^2); The original program has result(x) where x is not...

2 Monate vor | 1

Beantwortet
define a counter which will starts counting from zero automatically when the count reaches to 10
c = 0; % initialization while true c = mod( c + 1, 10); % count from 0 to 9 then re-start end

3 Monate vor | 0

Beantwortet
Reading CSV file with header and other data.
T=readtable("https://www.mathworks.com/matlabcentral/answers/uploaded_files/1174693/Without%20Cooling-%20aluminum%20No1.csv", .....

3 Monate vor | 0

| akzeptiert

Beantwortet
Merge the multi-columns, multi-rows in one column, one row
var = ["filename", "xmin", "ymin", "xmax", "ymax"] T = { "Japan_000001_jpg.rf.7b3ecaac169c998a18815a31934dbbea.jpg", 0, ...

3 Monate vor | 0

Beantwortet
Trying to change the y axis range in fplot
syms s a b c d e f n10 = a + (b*s) + c*(s^2) + d*(s^3) + e*(s^4) + f*(s^5) n10_d1 = diff(n10,s) n10_d2 = diff(n10_d1,s) A = ...

3 Monate vor | 0

Beantwortet
How to find the maximum value between two indices in an array?
Without yor data and complete code, this is a guess: mode2a = 200; % frequency lower bound (Hz) mode2b = 600; % frequency uppe...

3 Monate vor | 1

| akzeptiert

Beantwortet
How to add tolerance to iteration with if statement
x(1,1)=0; %Initial guess, x=0 y(1,1)=0; %Initial guess, y=0 z(1,1)=0; %Initial guess, z=0 R=0.3; %relaxation factor f...

3 Monate vor | 0

| akzeptiert

Beantwortet
Why is my plot blank
P0=300; %power of the heater n=50;% amount of gas (mol) M=28; % Molar mass of Nitrogen gas m=n*M;% m is the mass of the gas(g...

3 Monate vor | 0

| akzeptiert

Beantwortet
Bandpass power spectrum density issue
You need fs >2*f_upper. Try fs = 80GHz Wx = 50*10^6; % Signal bandwidth Tx = 1/Wx; % Symbol ti...

3 Monate vor | 0

| akzeptiert

Beantwortet
Assign variables from a solve solution
syms k_x Kr_x alpha_x c0=18.1499 alpha0=0.3491 g=9.81 omega=0.54 D2 = [1 2]; for i=1:length(D2) c_x=c0*tanh(k_x*D...

3 Monate vor | 0

| akzeptiert

Beantwortet
How to add tolerance to iteration with if statement
% if a2(i+1,1)-a2(i,1)<0.1 % change the above to: if abs(a2(i+1,1)-a2(i,1))<0.1

3 Monate vor | 0

Beantwortet
How can I plot this function?
% parameters (use your values) lambdaR = 1; lambdaI = -1; d = 3; p = 2; x = -10:.1:10; w = sqrt(pi/2)*exp((-p^2-4*p*la...

3 Monate vor | 0

Beantwortet
spline interpolation between three values
P=[100 200 300]; T=[100 150 400]; density=[0.4,0.7,0.8]; Pq =100:300; Tq = spline(P, T, Pq); dq = spline(P, density, Pq)...

3 Monate vor | 0

Beantwortet
Named arguments in Matlab?
Use arguments block (additionaly for default value, type and size check. doc arguments for more details) self = Renderer(sampl...

3 Monate vor | 0

| akzeptiert

Beantwortet
Check for incorrect argument data type or missing argument in call to function 'int'
Break long line codes into shorter ones using ... int is not a builtin function. use fix/floor/round/ceil instead (find out th...

3 Monate vor | 0

Beantwortet
how to save the values of DelL(T)
Lo = 44.46; Do = 18.76; alpha = 0.0002178 ; T = 36:1:180; DelL = Lo*alpha*(T-35); whos

3 Monate vor | 0

Beantwortet
Acess all last array elements withtin cells
You can use cellfun: precipitate{1}=[1,2,3,4;1,2,3,4]; precipitate{2}=[1,2,3,4,5;1,2,3,4,5]; precipitate{3}=[1,2,3;1,2,3]; ...

3 Monate vor | 0

| akzeptiert

Beantwortet
I can't figure out why am not getting a plot on my code
If you put the script and local function ga in the same file, then local functions should be placed at the end of the files as s...

3 Monate vor | 0

Beantwortet
Finding the z transform
syms n omega f(n) f(n) = sin(omega*n) ztrans(f(n))

3 Monate vor | 0

| akzeptiert

Beantwortet
inspection of linearity of data?
load(websave("check_linearity.mat","https://www.mathworks.com/matlabcentral/answers/uploaded_files/1167363/check_linearity.mat")...

3 Monate vor | 0

| akzeptiert

Beantwortet
Why am I getting this error "not enough argument"
The number of input arguments is 6: for r =1:m H_MMSE(: , r ) = MMSEesti(ReceivedPilots (: , r ), TransmittedPilots (: , r...

4 Monate vor | 0

Beantwortet
Creating 3D array from 2D with increment
A = randi([1, 10], [3, 5]) C = A + reshape(0:2, [1,1,3]) % increment 0, 1, 2 for example

4 Monate vor | 0

| akzeptiert

Beantwortet
Change sequence of consecutive trues to falses, in logical array
x=[true;false;false;true;true;true;true;true]' output = x; dx = diff(x(1:end-1)) output1 = output(2:end-1); output1(output1 ...

4 Monate vor | 0

Beantwortet
Add indicative labels to vector values
A1 = [ 1 ; 2 ; 3 ]; A2 = [ 4 ; 5 ; 6 ]; A_labeled = [A1 ones(size(A1)); A2 zeros(size(A2))]

4 Monate vor | 0

Beantwortet
Compact way to plot data with relative colors and legend
% Input a = {'marathon', 1, 4; 'bank holiday', 3, 6; 'bank holiday', 2, 1; 'concert', 0, 4; 'regatta', ...

4 Monate vor | 1

Beantwortet
Bode Plot options to graph
H = tf([1 0.1 7.5],[1 0.12 9 0 0]); [mag,phase,wout] = bode(H); subplot(211); plot(wout, squeeze(mag(1,1,:))) subplot(212); p...

4 Monate vor | 0

Beantwortet
How to create a for loop to go through data arrays?
%data = load('file.mat'); data.laser1.pulse=randn(10,1); data.laser2.pulse=randn(10,1); data.laser3.pulse=randn(10,1); dat...

4 Monate vor | 0

| akzeptiert

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