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"Undefined variable" error even though variable is defined
if frame1 == 1 Background1 = thisFrame1; else This does not define Background1 if frame1 ~= 1

2 years ago | 0

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I drew this curve, using the code below. How can I remain only on the line with circles above it?
Refinement of your code: syms a omega % Given parameters omega_n =1; mu = 0.1; ...

2 years ago | 0

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Answered
How do I prevent the command that caused an error being displayed in the command line?
./my_executable xyz: Signal 127 That indicates that ./my_executable could not be found. You are not in the directory you though...

2 years ago | 0

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How to create this table/matrix?
ForecastInfo = table(CIV.SYMBOL(1:10,:), ForecastDates', 'VariableNames', {'Symbol', 'Forcecast Dates'});

2 years ago | 0

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Answered
str2sym error
Work around: symfun('force(t)', sym('t')) or syms force(t)

2 years ago | 0

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writetable or dlmwrite to save an array as a txt file
M = [ 1.0000 -26.2000 -31.7000 2.0000 -27.1000 -33.9000 3.0000 -25.5000 -30.2000 4.0000 -24.4000 -30...

2 years ago | 0

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I keep getting the error message that the variables must be of data type double and it is currently of type sym.
%I'm unsure how else to run this code to solve the 10 eqn system where %the answer comes out in the correct form, please help ...

2 years ago | 1

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Answered
Hi, this is my code, I want to fit 36 graphs in one graph (36 rays in layout view)
N = 2048; L = 1e4; dx = 4e-3; [x0,y0] = meshgrid((-N/2:N/2-1)*dx); [xL,yL] = meshgrid((-N/2:N/2-1)*dx); [fx,fy] = meshgrid(...

2 years ago | 1

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Answered
Genetic algorithm gives same result everytime
You have a single variable that is integer constrained between 10 and 100. That is only 91 different values to search, at most -...

2 years ago | 0

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Answered
How can I displace x and/or y axes from existing positions?
There is no provided way to do this. You will have to turn axes off, and draw the axes yourself.

2 years ago | 0

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Fastest possible prime number detection without using break or return
The fastest possible way of doing any computation depends upon the fine details of your CPU, and upon the fine details of how me...

2 years ago | 0

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Processing Multiple Files at once.
[filelist,pathn] = uigetfile('*.*','Please Select a Par File in .dat or .txt', 'multiselect', 'on'); if isnumeric(filelist); er...

2 years ago | 0

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Answered
How can I skip the rest of an if statement?
if n > 1 while true if a == 1 disp('Haha') break % (Here is where I want to skip the res...

2 years ago | 0

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Answered
ginput error in matlab 2020a
Error in contains (line 36) tf = ~cellfun(@isempty, strfind(s, pattern)); ... Except that contains is a built-in function and ...

2 years ago | 0

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How to determine if angles match
You would get that behavior if prec1 or prec2 are non-scalar and it does not happen that all of the values pass the tests.

2 years ago | 0

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Answered
How to run a function in app designer?
psi = app.EditField_psi.Value; phi = app.EditField_phi.Value; theta = app.EditField_theta.Value; m = app.EditField_m.Value; ...

2 years ago | 0

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No sound when playing movie in Matlab2020b
%dispMoviesMatlab - ComputerVision Toolbox audiopath = 'C:\Users\maxab\OneDrive\Desktop\Masters\Experiment\Movies\Chosen'; m...

2 years ago | 0

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Where is Shader graphics available in MATLAB
The only access is shading (not very extensive)

2 years ago | 0

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vectorized operations on symbolic functions
syms x1 x2 x3; % symbolic variables y = x1^3/3 + x2^2/2 - x3; % symbolic function y X = rand(500,3); % each row representing a...

2 years ago | 0

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Slice command for terrain
No. Your data cannot be sliced. Perhaps you might want to contour() the data, and get back the contour matrix, and use somethin...

2 years ago | 0

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Answered
Extract color map from png apply to grayscale image
Use rgb2ind() on the colored image, and take the second output as being the color map. [~, cmap] = rgb2ind(TheColoredImage); i...

2 years ago | 1

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Answered
how to perform a multi variable optimization on matlab
There are several different minimizers possible. Everything except fzero() -- fzero() is restricted to one variable. The trick ...

2 years ago | 0

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Binary GA returns floating point numbers
% Set seed for reproducability rng(42); % Load data and define arrays data = readmatrix('Data/File_S1.xlsx'); X = data(2:e...

2 years ago | 0

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Answered
line search minimization problem, error sym is not convertible to double
f = 316.2*(X1^0.5) + 34.3*X2 + (10^8)*(X1^(-0.5))*(1/X2) %symbolic expression %... A=diff(f,X1) B=diff(f,X2) %A1...

2 years ago | 0

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Answered
Create a list of list and take the mean
cellfun(@mean, aps)

2 years ago | 1

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Answered
Unregcognized function or variable 'xotold'
if f2<f1 && f2<f3, xoptold = x2; end You only set xtoptold if that condition is true, but later you use it even if the co...

2 years ago | 0

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Find data from files that are too large to read in
Use buffer-fulls of data for increased efficiency. fread() a block of data of fixed size. Scan backwards through the block look...

2 years ago | 0

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How do I add transparency to a plot in the Live Editor?
Unfortunately, the hack of using a 4-element Color does not work in LiveScript. The work-around is to set the figure Visible pr...

2 years ago | 1

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x axis labels not properly working
You used xticks([-0.8:0.4:0.8]); Instead of xticks([-0.08:0.04:0.08]);

2 years ago | 1

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Answered
extracting one variable from mux
You do not use a To Workspace block for that purpose; you use a Bus Selector https://www.mathworks.com/help/simulink/slref/busse...

2 years ago | 0

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