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How to apply for loop in case of product of function inside double summation?
R = 0:1; a = 1:10; b = -10:10;% define values for i = 1:length(R) for j = 1:length(R) pr_1(i,j) = a(i)*b(j);...

mehr als 2 Jahre vor | 1

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How to find a specific number in a specific column in an excel file and how many times it occurs
D = readtable('test.xlsx'); rowsIndex = D.T == -1100; requiredRows = D(rowsIndex, :)

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Matlab is not giving the correct z transform of - (n*a^n)*u[- n - 1];
syms n z a; y = (n*a^n)*heaviside(n+1) %... heaviside is supposed to be the unit function but apparently it's not working. yz ...

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Turning string into a variable name for a function to use
As the error states, input arguments must be table, you need to either convert the f2load into table using table function or pas...

mehr als 2 Jahre vor | 0

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How to display contour levels for some specific levels
Do you mean like this ? Z = peaks; figure [C,h] = contour(Z,8); v = [-1.6727, -0.0448059, 0.0648059, 3.6634] clabel(C,h,v)...

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Why ist the Amplitude of the PSD lower than expected?
Hi @Linus Trauberg From the graph it appears there is a shift in the frequency range returned by pwelch as against to data tha...

mehr als 2 Jahre vor | 0

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Function 'contains' did not work
if you use compose function nstead of num2str then contains works correctly, clear s1 = 1:100; s2 = [50 51]; s1str=c...

mehr als 2 Jahre vor | 1

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Making the last two plots in a subplot have an x-axis in degrees?
clear ; clc ; x = linspace(-2,2,51) ; y1 = sinh(x).^2 ; y2 = tanh(x).^2 ; subplot(2,2,1) ; plot(x,y1,'s--r','LineWidth',2,'M...

mehr als 2 Jahre vor | 1

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How to plot a given vector field A(x y,z)=(-y)x hat + ( x) y hat + (0) z hat in x y plane .I tried this code but getting an error
% Define the vector field A(x, y, z) = (-y)x_hat + (x)y_hat + (0)z_hat syms x y z A = [-y*x, x*y, 0]; xx = linspace(-2, 2, 2...

mehr als 2 Jahre vor | 1

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scientific notation convertion of coefficients of a polynomial
syms x f = - 0.042440155 + 0.29476113*x + 0.47380563*x^2 - 0.17632127*x^3 + 0.038426007*x^4 - 0.005090693*x^5 + ... 0.0007...

mehr als 2 Jahre vor | 0

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Error in the anonymous function
% Define A as a 1x24 vector AA = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ... 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, ... 21, 22, 23, ...

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Help with the equation
Check whether the density input is correct or not to get a value of 4.5 forTBAL syms T_BAL Rho =1.225; % density ?? % stan...

mehr als 2 Jahre vor | 0

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How can I make it so that the value from my slider changes the rotation speed of the ferris wheel in my code?
Delete the return value for sliderCallback function call as shown below and put the while and/or for loop code for the animat...

mehr als 2 Jahre vor | 1

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SWITCH expression must be a scalar or a character vector. Error in pathplaninglaila (line 17) switch mode
The mode variable used for the switch expression needs a character data type. you need to convert that variable to char mode as...

mehr als 2 Jahre vor | 0

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Give me an example of a calling function.
Put the prog2 code in a function file (which returns the value of n) and call that function in prog1 script file as shown below ...

mehr als 2 Jahre vor | 0

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Replace strings with a different string and save the data
D = readtable('data.txt'); C = char(['40% Fe';'30% Al']) % e.g. element data to be filled in 1st column D.(1) = repmat(C,168/2...

mehr als 2 Jahre vor | 0

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Operator '>' is not supported for operands of type 'cell'.
T is a table array/datatype, and you try to access variable inside the table with same name , this is not valid operation idx =...

mehr als 2 Jahre vor | 0

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how to extract roots of equation
syms w N k1=70; k2=200; m1=0.1; m2=0.064; m3=0.04; r=0.25 M1=(m2+m3)/m1; M2=m2/m1; K=k2/k1; wn1=(sqrt(k1/m1))/(2*...

mehr als 2 Jahre vor | 0

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solving beam deflection curve
if you use linspace function, it divides the length between initial and final points into non-equispaced values, however if you...

mehr als 2 Jahre vor | 1

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Save file .txt the same name as loaded file
filename = "XRF3.mat"; load(filename) save(filename)

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Finding a definite integral
u and k are both functions of x. But I only know the values of u and k at some points of x. you can interpolate missing values ...

mehr als 2 Jahre vor | 0

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MATLAB does not print vector file even with renderer specified
how about image format ? print('-image','a1.eps','-depsc')

mehr als 2 Jahre vor | 0

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Adding zeros to a column vector to match a larger column vector
x = rand(100,1) % column vector y = rand(108,1) % another column vector of different size zeros(1,length(y)-length(x)) % row ...

mehr als 2 Jahre vor | 0

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Numerical Differentiation using Finite Differences
h = 0.01; X = 0:h:2*pi; fx = sin(X); df1 = (sin(X+h) - sin(X))/h; df2 = (sin(X) - sin(X-h))/h; df3 = (sin(X+h) - sin(...

mehr als 2 Jahre vor | 1

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why I get the error message like "Attempt to execute SCRIPT bar as a function"?
power_input = [-load -p_c] % this line uses builtin function load

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Inputting a Matrix into a function
t0 = 0.5235; t1d = 0:60; t1r = deg2rad(t1d);% use this function to convert to radians phi = pi; g = cos(t0)*cos(t1r) + sin(t...

mehr als 2 Jahre vor | 0

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Symbolic toolbox differentiation by chain rule without expression defined
syms x(t) y(t) z(x,y) t x = x(t); y = y(t); z = z(x,y) C = diff(z,t)

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How to count number of terms in a symbolic expression?
syms x y z='x*y+cos(x*y)*x+x*sin(x)+sin(x)*cos(x)-x-y+2' C = strsplit(z,{'+','-'}) length(C) C{3} % 3rd term

mehr als 2 Jahre vor | 0

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What command do i need after de hold off fuction to print the labels in my plot?
print('-image','-dpng', 'windclimate_allyears.png') Try using the OpenGL graphics rendering format as above. The version of Mat...

mehr als 2 Jahre vor | 0

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How do I optimize graph size?
May be the change in coefficient for cosine function plotted in black color as shown below z = -72:0.2:72; hold on Tb = 543.4...

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