# Jacob Lynch August

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Mechanical Engineer in R&D

Professional Interests: Control Systems

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**9** Answers

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RANK**12,270** of 20,180

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Calling superclass method outside of redefined method

I went back to the author and brought up these techniques. He agrees that the level of hackery is unforuntate, but this is what ...

3 years ago | 0

| accepted

Question

Calling superclass method outside of redefined method

I have an "DataAnalyzer" classdef that has a method that slowly computes exact solutions to certain queries. classdef DataAnal...

3 years ago | 3 answers | 1

### 3

answersSubmitted

kDTree

Get arrays representing the k-D tree of positional data.

4 years ago | 2 downloads |

Submitted

ikdtree

Get arrays representing the k-D tree of positional data.

4 years ago | 1 download |

Question

Nested Functions vs Object-Oriented Programming: k-D Tree example and relative performance

My colleagues tend to criticize my use of nested functions in MATLAB, likening that to the professional no-no of modifying globa...

4 years ago | 2 answers | 1

### 2

answersQuestion

Instantiating an invalid handle object when defining an object as default property definition

A classdef defines some properties which are defined, but have no valid construction. E.g. an event.proplistener. In the example...

4 years ago | 0 answers | 0

### 0

answersGetting an error in a listener callback function to trigger an error in/terminate execution of the calling function

I'm also having the same issue. It would be better if the error stopped execution immediately rather than continue on. For examp...

5 years ago | 0

Question

Defining classdef property validations for gpuArrays

Here are two scenarios I'm unsure how to handle when it comes to constructing class property validations with GPU types. c...

6 years ago | 2 answers | 1

### 2

answersHow to clear gpuArray, which is a property of a class, from memory when deleting an object class instance

In the delete method you created for the handle, instead of clear, did you try something F.Z_d(:)=[] or Z_id(:)=[]?

6 years ago | 0

How to ensure that onCleanup destroys last

<https://www.mathworks.com/matlabcentral/answers/2245-oncleanup-order-of-execution#answer_338728 Try cellular vectors of onCle...

6 years ago | 1

onCleanup order of execution

onCleanup objects can be stored in a cellular vector, and will be performed first to last. You should know the number of total t...

6 years ago | 1

Question

Make subclasses inheret a method to look for past work

Preface: I am a mechanical engineer with effectively zero background in software engineering. I can read most C/++/#, Java, and ...

7 years ago | 1 answer | 1

### 1

answersyntax for call to java library function with byte[] (reference) parameter?

A SOLUTION I haven't figured out how to pass the byte reference, but I have found a way to read a fixed number of bytes from a ...

7 years ago | 4

syntax for call to java library function with byte[] (reference) parameter?

_What is a *byte[] buf* in MATLAB, and how do I pass it to read from the GZIP_INPUT_STREAM to retrieve a fixed number of bytes?_...

7 years ago | 0

syntax for call to java library function with byte[] (reference) parameter?

Bob Gilmore, a software engineer for Mathworks at the time of this <https://www.mathworks.com/matlabcentral/newsreader/view_thre...

7 years ago | 1

Question

Where is the Horizontal property for area plots

I'm trying to create graphics for a presentation involving many inequalities. Several charts define x<=max and x>=min. I've been...

7 years ago | 0 answers | 0

### 0

answersSubmitted

MLExampleJavaSecurityMessageDigest

Demonstrate how to hash data with Java

7 years ago | 1 download |

Solved

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...

7 years ago

Solved

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. Examp...

7 years ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

7 years ago

Solved

Triangle Numbers

Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

7 years ago

Solved

Column Removal

Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

7 years ago

Solved

Select every other element of a vector

Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

7 years ago

Solved

Pizza!

Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

7 years ago

Solved

Determine if input is odd

Given the input n, return true if n is odd or false if n is even.

7 years ago

Solved

Find the sum of all the numbers of the input vector

Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

7 years ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]

In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

7 years ago