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For-loop using only last iteration
Inside the loop C = zeros(1,10) + A; the function "zeros(1,10)" is assigning zeros to the entire C vector, then adding A. Als...

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How can i merge the signals from the sensors into 1 signal ?
The merge block is not used to combine signals - it is used to select one of two triggered signals. The two inputs are signals ...

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Output for Accelerator Model
I think there is a misunderstanding. The way I read it, if you use a large number of inport and outport blocks (at the root lev...

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What kind of numerical method is used for the inverse kinematic block at simulink?
Here is a link to the Matlab documentation: Inverse Kinematics Algorithms

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Hold a value indefinitely once a condition becomes true
Try This:

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Trying to plot array points on a graph.
You might also try this: [row,col] = size(AA); % AA is the data matrix figure; for ii=1:row for jj=1:col if ...

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How to connect the two signals in one signal in MATLAB Simulink? I mean first signal finishes second signal starts.
You description of the problem is confusing to me, bu the statement in the title "first signal finishes second signal starts" ...

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Numerical Integration in Matlab
There seem to be two problems: 1) your function "fun" returns "NaN" at zero, so you cannot integrate starting from zero. You n...

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Simulink counter block having an initial starting value of -1
Yes, the two counter blocks in the library do not allow you to set the initial value. Whenever I need to use a counter, I usual...

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Finding the roots of an equation using Newton-Raphson method but I don't know the equation!
You use a numerical approximation for the derivative. Start at some initial guess for x & y. take a small step, and compute th...

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Implementing Angles as an input in Simulink
It appears (based on the icon on the block) that the block labeled "Robot Controler" is a Matlab function block. In order to a...

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Pendulum using Runge Kutta
Yes, there are a few things wrong with this code. James Tursa has identified one obvious error. Another problem is with the lo...

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How to return the index of time steps in Simulink?
One way to do this is to put a step counter in the block. This will keep track of the number of times the block is executed. T...

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Why is my code not working?
Not entirely sure if this is the reference in the error message, but this line has unballanced parentheses: f = (1/(t-t^(-1))*...

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In the Simulink library browser, on the "sources" pallet, you will find a "clock" function. Use this to create a time signal. ...

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How can one do this calculation?
Look into using logical indexing. Not my strong point, but for example, if A is the 3 x 10 matrix, you can select all cases whe...

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Kalman Filtering for smoothing GPS speed data
The problem is with this line: P = (1-KG)*P; This causes the gain P to continuously decrease. After a while, the gain P is ve...

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numerical derivate and central difference
Here are some Numerical difference formulas using the central difference method (substitute dt = h). You can find more formulas...

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Meaning of the following: function [y1,...yn] = input()
It simply means that there are no user inputs to this function. The long list of variable names are returned from the function....

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Angle Between two vectors.
Given two vectors A and B, the dot product of the two vectors (A dot B) gives the product ABcos(ang), so to get just the angle, ...

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Is it possible to summarize this code?
You could use a switch case structure, that would be a bit more compact. it would look like this: switch davar1.CC_CHECK ...

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help fixing the Heuns method
Heun's method is otherwise known as "explicit trapezoidal method", "improved Euler's method" or "modified Euler's method". Th...

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I need help coding a human cannonball ignoring air resistance
Assuming zero drag and relatively low muzzle velocity ( acceleration due to gravity = constant), the point-mass trajectory can b...

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Runge Kutta 4th Order Method
I think the problem is the T argument. in k1 you have a capital T, which is a 3-vector in k2, k3, and k4 it is a lower case t,...

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Matlab Homework that im struggling with
To prompt a user to enter a value, try: x = input('Enter the number of equations (from 2 to 5): \n')

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I need help with this script
Try this: T = input('Enter your temperature') if T<=96 disp('You are either hypothermic or a zombie') elseif T<99 d...

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Ballstic Impact of Bullets on armor
I don't know af any specific ballistics tools. You should browse the a list of Matlab products at this link: Matlab Products

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How to find theta and theta dot in a simple pendulum simulation in MATLAB.
I'm not sure at all what your system equations are. The first rule of dynamics is where you have translational modes of motion ...

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What is a "system variable" in a Simulink model?
In this context, the "system" is the device that you are modelling. Therefore, a "system variable" is one of the variables in y...

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Undefined function 'simset' for input arguments of type 'char'.
simset is an obsolete function. See documentation here. It says to use the Configuration Parameters dialog box.

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