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Interpolate data to present with limited size of data
x=rand(5,7) figure contourf(x,'LineColor','none') shading interp axis equal off

2年弱前 | 1

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Getting A blank Graph
See below for a correct use of indexing with a for loop x = 0:0.01:1; for i = 1:length(x) y1(i) = (0.5*x(i)^5)-(0.6*x(i)^4)...

2年弱前 | 0

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trying to plot 3 variables in 3d
surf can handle only matrices, so this is what you want to do theta= linspace(.01, .55); %for thetamax = 32 degrees M=linspace...

2年弱前 | 0

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While loop with all elements meeting the conditions
t = -100:200; F = t; indices = 1:100; while all(F(indices)<0) indices = indices + 1; end

2年弱前 | 1

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Wrong sum 50 + 0.01
I don't think this is an issue at all, but it rather has to do with the max accuracy MatLab uses to store numbers. Such accurac...

2年弱前 | 0

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solve multiple equation in one variable
I think the problem is that you have 5 equations and 4 variables, because p1 does not appear anywhere in the system. Therefore ...

2年弱前 | 0

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How can i get a logical vector for all rows when compare each row of a column matrix with a another row column matrix
You can simply do A = randi(10,5) B = randi(10,5) l = A == B

2年弱前 | 0

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How to delete previous values within a certain difference?
You can do this A = [1,2,3,4,20,21,22,35,36,37,38,50,51,52,53,54,57,70]; A = A(diff(A)>10)

2年弱前 | 0

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How do I set some variables of a function to a constant and plot the others?
This is a possibility E = -3:.001:3; plot(E,Theta(E,1)) function out = Theta(E,Delta) out = zeros(size(E)); out(abs(E)<=D...

2年弱前 | 1

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How to delete adjacent values
A = [1 5 6 7 8 9 10 11 12 20 21 22 23]; A([false,diff(A) == 1]) = []

2年弱前 | 0

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IF statement not generating results?
data=load('artificial_slope_2.txt') %loading data % defining input values based of input txt file nx = data(:,4); ny = data(...

2年弱前 | 0

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a problem in rectangular function.
You are using plot incorrectly, see below. a=1; syms t f=piecewise(a / 0.2e1 < abs(t), 0, abs(t) == a / 0.2e1, 0.1e1 / 0.2e1,...

2年弱前 | 1

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forward, backward, central finite differences with step sizes.
I took the liberty to give you an example with a different function, because the one in your question has a constant slope and d...

2年弱前 | 0

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Why does the code return an additional answer value that I have not asked for?
That is because you call the function without assigning it to a variable. Therefore Matlab assigns it to a variable called ans,...

2年弱前 | 0

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I'm not getting the correct result for the u, i want it in degree but the ans is not right, the plot is not smooth.
You did not give enough information to know what the end result should be, but if your interest is only to plot in degrees, then...

2年弱前 | 0

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How to pass a function handle as an argument in ode45?
Just use a semicolon, ode45 requires the output to be a column array. R = 0.5; l = 1; g = 9.81; omega = 0.25; F = @(t,y...

2年弱前 | 0

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How can I keep the yaxis label inside rather than outside
Other possibility, a bit cumbersome I'd say plot(1:10,1:10) xlabel('xlabel') ylabel('ylabel') a = gca; a.YTickLabels = {''}...

2年弱前 | 0

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How to run a loop with isNaN
disp('Solving a quadratic polynonial (ax^2+bx+c), where a b and c are real numbers to 3 decimal places') a = input ('What is yo...

2年弱前 | 1

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get p*(q*m) matrix from m*n matrix and p*q indexing matrix
Something like this? n = 3; C = rand(8,n) index=[... 1 5 1 2 3 4 2 6 2 3 4 1 3 7 6 7 8 5 4 8 5 6 7 8 ...

2年弱前 | 0

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How can I keep the yaxis label inside rather than outside
You could play around with the "Position" field of the text structure of the label. See below plot(1:10,1:10) xlabel('xlabel'...

2年弱前 | 0

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I want to find 4 consecutive number which is present in array.
idx = [1 2 4 5 7 9 11 12 13 14 16]; pl = regionprops(any(idx == (1:max(idx))',2),'PixelList'); out = pl(cellfun(@(x)size(x,1)...

2年弱前 | 0

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Implementing numerical method for PDE
clear,clc tspan = [0 1]; N = 100; x = linspace(0,1,N); dx = 1/(N-1); Uexact = @(t,x) exp(1i*(x-t)); ...

2年弱前 | 1

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Compact way to plot data with relative colors and legend
a = {'marathon', 1, 4; 'bank holiday', 3, 6; 'bank holiday', 2, 1; 'concert', 0, 4; 'regatta', 1, 9; ...

2年弱前 | 1

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Finding the sum to n of 1/2^n
You haven't indexed the loop variable for n = 1:20 b(n) = 1./(2.^n); end Sn = sum(b); disp(Sn) You can also do it with...

2年弱前 | 0

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display string in table
row1 = {'a' 'b' 'c' 'd'}; row2 = {'m' 'n' 'o' 'p'}; varnames = {'Col1' 'Col2' 'Col3' 'Col4'}; rownames = {'Row1' 'Row2'}; T...

2年弱前 | 0

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How to write a discontinuous signal equation in matlab?
t = 0:0.001:0.3; x1 = 0.2*sin(2*pi*150*t); x1(t<=0.05 | t>=0.1) = 0; x2 = 0.4*sin(2*pi*50*t); x2(t<=0.15 | t>=0.25) = 0; x3...

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code for solving given equations. Eq1 = x == 10-(1.5835*(y^1.7643)); Eq2 = x == (2^y-2)/(0.3143*(2)^y+0.3329*(1.5)^y+0.3528*(1)^y);
It seems like MatLab can't find a symbolic solution and returns instead a numerical one syms x y Eq1 = x == 10-(1.5835*(y^1.76...

2年弱前 | 1

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MatLab codes for the used by forensics to determine the exact time of death.
if you already have an expression for T, why would you solve the ODE? anyways, the correct syntax is clear,clc k = 0.5 F = @...

2年弱前 | 1

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How can I save values to an array using a for loop
I'd try this folderName = [dir([read_dr '\some_folder'])]; %This works fileNames = {}; for g = 1:length(folderName) file...

2年弱前 | 0

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Solving Trigonometric Function Equations with Time varying Parameters by MATLAB
You were almost there t = (0:0.001:5)'; x = fsolve(@(x)myfun(x,t),zeros(size(t))); plot(t,x) xlabel('t') ylabel('x') funct...

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