Dan K

122 total contributions since 2008

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Solved

Lightning strike distance: Writing a function
Write a function named LightningDistance that outputs "distance" given input "seconds". Seconds is the time from seeing lightnin...

5 years ago

Solved

Make a Palindrome Number
Some numbers like 323 are palindromes. Other numbers like 124 are not. But look what happens when we add that number to a revers...

6 years ago

Solved

Pizza value using expression with parentheses
Pizza prices are typically listed by diameter, rather than the more relevant feature of area. Compute a pizza's value (cost per ...

6 years ago

Solved

Create a row array using double colon operator
Create a row array from 9 to 1, using the double colon operator.

6 years ago

Solved

Fahrenheit to Celsius using multiple statements
Given a Fahrenheit value F, convert to a Celsius value C. While the equation is C = 5/9 * (F - 32), as an exercise use two state...

6 years ago

Solved

Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.

6 years ago

Solved

Simple equation: Annual salary
Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...

6 years ago

Submitted

findInPath.m
Tests paths (or any other string) to find if it contains a substring

6 years ago | 0 downloads |

Question

Is there an equivalent to ismcc for fiaccel?
I'm trying to write code that can be fixed point accelerated, but it does mean making some changes that are not beneficial if I'...

6 years ago | 0 answers | 0

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Solve the Sudoku Row
*Description* A simple yet tedious task occurs near the end of most Sudoku-solving algorithms, computerized or manual. The ta...

7 years ago

Answered
How to read in a text file with data seperated by a colon first, than a comma and than a dash?
Here's a place to start from: str1 = 'HA: 2012-01-08, 11:01:45.802 – FFFF0811111111210208' C = textscan(str1,'%2c:%d...

7 years ago | 1

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Question

R2013a: Where are the improvements? Is TMW even listening?
I would like to get people's feedback on the changes made in 2013a. I find the release notes to be incredibly dissapointing, in...

7 years ago | 1 answer | 2

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Answered
is it faster to load a big file (198MB) once and pass it onto a function in a parfor loop or let the function in parfor loop to load it every iteration?
A few things... 1 it should not take minutes to load a file that's only 200MB, so you may want to look at how you're loading...

7 years ago | 0

Question

How to make an anonymous function for variable amount of input data
Hi all, I'm trying to generate an anonymous function where I pass in an array of structures and convert it to a structure of ...

7 years ago | 2 answers | 1

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Answered
How to create a structure with a name speficied by user in inputdlg?
Folks, please don't crucify me for this one, but the easiest way I see to do it is: eval([specifiedname '.Course = []']); ...

7 years ago | 0

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How do I make a vector into a loop?
I think I understand... Are you saying that if you have a five element vector A(1:5), then you want A(6) to actually reference ...

7 years ago | 0

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Answered
How do I add an additional object to an image?
Your question isn't very clear. The simplest answer is: hold on %Add additional object hold off

7 years ago | 0

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Answered
Speeding up code: pre-allocation, vectorization, parfor, spmd....
Make sure that it is a function and not a script... Huge speed difference there. When you pre-allocate, make sure your allocati...

7 years ago | 0

Answered
What causes variable editor to be blank for OOP (openvar)
Update for anybody who may care... I opened a support case to get some help from TMW on this... While waiting I discovered that ...

7 years ago | 0

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Question

What causes variable editor to be blank for OOP (openvar)
Hi, I've got some fairly large OOP classes defined (which are subclasses of another). Sometime recently, I must have changed...

7 years ago | 2 answers | 0

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Answered
GUI with moving marker
A couple of different options: Perhaps the simplest (although not very speed efficient) is to apply a tag to the marker when yo...

8 years ago | 0

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Question

How to actually view my FEX watch list
I don't know if anybody else is having this problem, but I can't actually view my watch list in FEX. If I go to my file exchang...

8 years ago | 0 answers | 0

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Experiences with release 2012b
I am going to suggest an informal poll to be conducted here. Ultimately TMW will make its decisions based upon how it impacts r...

8 years ago | 1

Answered
Experiences with release 2012b
# When I dock a figure, it makes the figure toolbar virtually useless, since it becomes a tab on ribbon. For me there are a few...

8 years ago | 4

Solved

Right and wrong
Given a vector of lengths [a b c], determines whether a triangle with those sides lengths is a right triangle: <http://en.wikipe...

8 years ago

Solved

Program an exclusive OR operation with logical operators
Program an exclusive or operation *without* using the MATLAB function xor. Use logical operators like |, &, ~, ... instead. ...

8 years ago

Solved

Which doors are open?
There are n doors in an alley. Initially they are all shut. You have been tasked to go down the alley n times, and open/shut the...

8 years ago

Solved

Arrange Vector in descending order
If x=[0,3,4,2,1] then y=[4,3,2,1,0]

8 years ago

Solved

Make one big string out of two smaller strings
If you have two small strings, like 'a' and 'b', return them put together like 'ab'. 'a' and 'b' => 'ab' For extra ...

8 years ago

Solved

Bottles of beer
Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...

8 years ago

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