Doug Eastman

MathWorks

2011년부터 활동

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Strange behavior: gain bocks which integrate step inputs
The issue with the lines being slanted is due to the fact that Simulink sees these signals as continuous so it will connect the ...

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The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

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Count up then down
Create a function that produces counting up from 0 up to n then down to 0 n=2 --> 0 1 2 1 0 n=3 --> ...

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Is my wife right?
Regardless of input, output the string 'yes'.

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How do I change Design Verifier default confinguration parameter preferences?
Hi Erik, I don't know of a way to set the default options for Simulink Design Verifier, however using the command line versio...

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Why does XY Graph affect algebraic loop solver?
The problem is that adding blocks to your model (such as the XY Graph) causes the <http://www.mathworks.com/help/simulink/ug/con...

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How can I set that only one of the subservers can be used at a time?
Here are two possibilities: 1) Do you really need two separate server blocks? The simplest solution might be to set an entity...

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How to retrieve a subblock name at initalization.
Another simpler option might be to just use a constant block with the value: uint8('LookupKey') You could then hide the ...

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Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

거의 12년 전

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Replace NaNs with the number that appears to its left in the row.
Replace NaNs with the number that appears to its left in the row. If there are more than one consecutive NaNs, they should all ...

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SINEWAVE IN SCOPE (simscape)
To see the sinusoidal voltage variation you need to reduce the step size of the simulation. Go to Simulation -> Configuration Pa...

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How do I run a simulink model in real-time in normal mode
Running in real-time in normal mode is a new feature of Real-Time Windows Target in R2012a. To run in real-time you do need to a...

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How to close Simulink model subsystems
Assuming your top-level model is called TopModel you could use: a = find_system('Parent','TopModel'); close_system(a)

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Analog circuits in Simulink
The error seems to indicate that you are missing a solver block, but you have one in the image you've attached. For the case of ...

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Moving from video to 3D Environment
<http://www.mathworks.com/products/3d-animation/demos.html Simulink 3D Animation> should allow you to do what you are looking fo...

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Number of toolboxes?
Return a number equal to the number of toolboxes available to the Cody solvers.

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Specific toolboxes
Given a string that is the name of a MATLAB toolbox, return true if it is available on the Cody solvers evaluation system, false...

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Similar Triangles - find the height of the tree
Given the height, h1, of a power pole, shorter than a tree, a given distance, x2 away, please find h2, height of the tree. Pleas...

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xpc target
Yes, you have the basic idea correct. If you haven't already I recommend reading through the <http://www.mathworks.com/products/...

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Multiprocessing in Simulink
The primary mechanism to leverage a multi-core or multi-processor system with Simulink is to run multiple simulations in paralle...

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Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

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Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

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Duplicates
Write a function that accepts a cell array of strings and returns another cell array of strings *with only the duplicates* retai...

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

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Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

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Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

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