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How do I choose 256 or 0 values from my image?
[row, column] = find(BW); See also regionprops() such as PixelIDList

6 days ago | 0

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Answered
Why is my script not enterering the elseif argument
end % group No, that is incorrect. You have for moNr, within for jo, within for tsk, so that "end" is matching tsk. You do ...

6 days ago | 0

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How to stop a sub function after certain time from main function ?
If you use parfeval() then you can cancel() the future. However when you cancel a future you do not have access to its worksp...

6 days ago | 1

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How to use monte carlos method without using rand()
You need *some* source of randomness. It does not have to be truly random. There are websites that you can connect to in orde...

6 days ago | 1

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ERROR ... -------------------------------------- cwt ---> Invalid Value for Scales !
Compare the example_ground_motion.acc file with the ex1.acc and ex2.acc files. The example_ground_motion.acc file starts with ...

6 days ago | 0

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Assign identification number to image
You are asking for the wrong thing. What you need to do is create a matrix the same size as your image, in which each location i...

7 days ago | 0

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can we apply newton divided difference interpolation method for tumor detection
As previously discussed, the answer is Yes, it can be done, but that the result is likely to be numeric garbage. No-one can p...

7 days ago | 0

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I try to write simple analytical function Gomez and Levy with ga in optimization toolbox but it cannot run
y=(4*x1.^2)-2.1*x1.^4+1/3*x1.^6+(x1*x2)-4*x.^2+4*x2.^4; Notice that you have 4*x.^2 . But x is a vector so that would retu...

7 days ago | 0

Answered
GUI transpose code encounter some errors
load db; Avoid using that form of load(). Instead, use load as a function assigning to a variable old = load('db.mat')...

7 days ago | 0

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Answered
How to in put this on MATLAB
In the places that have the +/-, write one copy of the expression using the + and any other copy using - and multiply the two to...

7 days ago | 0

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How do I stop getting extra zeros from a for loop?
you did not initialize i

7 days ago | 0

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How to remove duplicate x-values and rearrange the y-values?
g = findgroups(x) Col = splitapply(@(Y) {Y}, y, g) ;

8 days ago | 0

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Is there a way to easily capture subplots in an app?
When you use plotting commands without passing in the parent container, they use gca() or gcf() as appropriate. gca() uses gcf()...

8 days ago | 0

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Speed up the optimization toolbox problem
No, there are no easier ways. There are some ways that might improve performance even more than using rapid acceleration, but...

8 days ago | 0

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How to get a one function result?
You can create a helper function function varargout = safe(fcn, varargin) try [varargout{}] = fcn(varargin{:})...

8 days ago | 0

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Answered
I have to do a parallel simulation without a parallel simulation tool box? The main idea is to Remove a for loop that does one iteration after another to speed up computation.
You have a small number of possibilities: * upgrade to a version that supports background pools * obtain the parallel comput...

9 days ago | 0

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What should I do if I get an error message called "Execution of script addpoints as a function is not supported"?
Inside of your function, your global variable p is not class AnimatedLine The most common cause would be that in the place yo...

9 days ago | 1

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How do you make it so that the simplify function displays the correct answer?
(s^2 - 20*s + 200) The roots of that are 10 +/- 10i . So that expression is already fully factorized to real coefficients, ...

9 days ago | 0

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How to make numbers(coefficients of a polynomial) in the plot legend decimal while they are automatically fraction
dig = 4; fplot( vpa( poly2sym( coefficientmatrixflipped(z, :), dig), [0 5])

9 days ago | 0

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Answered
Appending Values to an Empty Array
size() always returns a vector. Consider numel()

10 days ago | 0

Answered
Append indices to vector from container map
That cannot be done in MATLAB under the restrictions you put on. containers.map does not offer any operations that affect all...

10 days ago | 1

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Answered
Input and Output Arguments
If you were to use a non-anonymous function to do that, then the function would have to use evalin('caller') and assignin('calle...

10 days ago | 0

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How to plot a dot on a function line with only 1 value
plot(x, y, '-', 0, 4, 'bo')

10 days ago | 0

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solving a system of equation using symbolic expressions returns empty solution
syms CG0 HC R T K0 Cm0 beta syms RH q_H2O CG K Cm HK eq1 = q_H2O == Cm * CG*K*RH / ((1-K*RH)*(1+(CG-1)*K*RH)); eq2 = C...

10 days ago | 0

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Answered
In spite of being real, I get the error: Warning: Imaginary parts of complex X and/or Y arguments ignored.
dNis = Nis - Nth; Ais = sqrt((AInj^2 - gammaN/gammaP*dNis)/(1 + g*dNis/gammaP)); dNis is negative. That makes the numerator f...

10 days ago | 0

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hey guys , just started working with ROS and MATLAB for Msc .I am trying to access laser scannerdata from ros But keep getting the following error. Could somebody help me
You have to use Ranges not ranges.

10 days ago | 0

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Answered
Error using symengine, Too many input arguments, x= xf; fx = funfcn(x,varargin{:});
with those constants, f_sym is (y*y + y + 1)/(y*y+y+1) which is 1 except at 0. derivative of 1 is 0... with no symbolic variable...

10 days ago | 1

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Answered
How to avoid error in anonymous function
f = @(x, u) Fx(x,u)*x(t-1) + Fu(x,u)*u(t-1);

10 days ago | 0

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Continuous Errors Trying to Solve for an 11-State Variable w/ ODE45
-(-1200*diff(a1*sin(omega1*t)) omega1 is a scalar constant. At any instant in an ode45() call, t is a scalar value. omega1*t is...

10 days ago | 0

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Why does my plot go blank when I run my program?
for i=1:length(theta2(i)) At the point in your code where you are constructing the bounds of the for loop, the bounds to the ri...

10 days ago | 0