Responded

Re: Problem with wrong legend line colors

I arrived here looking for a solution to this problem. I am plotting various lines and points, and at the same point in the lege...

1 year ago | 40153 views

Question

Not so rhetorical question: Why the common practice of writing lines of code without white space?

I wanted to ask this of MathWorks, because they start the habit in their docs, but I didn't find a place to ask them... so... ...

2 years ago | 5 Answers | 1

Answered

General Question of Matlab.

I agree somewhat with some of the previous answers. You need to understand the problem and come up with your own answers. I came...

General Question of Matlab.

I agree somewhat with some of the previous answers. You need to understand the problem and come up with your own answers. I came...

2 years ago | 1

Responded

Re: How to change the text color in legend boxes?

Still a great help in 2014! Thanks much. ~R~

2 years ago | 8948 views

Responded

Re: multi-core processing penalty

It may well be. I ran several tests in a row, and looked at the average results. In real life, a "limiting factor" would be disk...

2 years ago | 1384 views

Responded

Re: Pre-allocation question: textscan > cells > matrix ? efficiency

I ran a test, and determined that the assignments here do not consume extra memory. I have been puzzled by several web page expl...

2 years ago | 1055 views

Posted

Pre-allocation question: textscan > cells > matrix ? efficiency

Long before starting to use MATLAB, I was used to the idea of pre-allocating space that I'd need during processing. I wonder if ...

2 years ago | 1055 views

Posted

multi-core processing penalty

I was recently asked by an IDL programmer to discuss profiling: how to do it, how to interpret the results. I used MATLAB as my ...

2 years ago | 1384 views

Submitted

Christoffel symbols and geodesics, symbolic model

Uses MATLAB symbolic processor to produce symbols

2 years ago | 5 downloads |

Posted

Implement structure union or variant record

I have a background in programming languages. Recently one of my peers suggested that my MATLAB code might be more readable if I...

4 years ago | 888 views

Solved

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...

5 years ago

Solved

Who Has the Most Change?

You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

5 years ago

Solved

Weighted average

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

5 years ago

Solved

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...

5 years ago

Solved

Fibonacci sequence

Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

5 years ago

Solved

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...

5 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 ...

5 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 ...

5 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...

5 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 ...

5 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...

5 years ago

Solved

Determine if input is odd

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

5 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. Example...

5 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...

5 years ago

Solved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

5 years ago

Answered

What frustrates you about MATLAB?

MATLAB assignment (a = 1) statements must be terminated with a ; to suppress output, but the 'natural' case is to NOT want outpu...

What frustrates you about MATLAB?

MATLAB assignment (a = 1) statements must be terminated with a ; to suppress output, but the 'natural' case is to NOT want outpu...

5 years ago | 0

Question

textscan and multidimensional arrays

I have a text file that contains recordS 600 bytes long. The data is mixed: date, time, chars, ints, fps. I am using textscan...

5 years ago | 0 Answers | 0

Posted

R2007a memory not released until UI context switch

I am not skilled with MATLAB, though I have programming experience to a limited degree in various languages. I am writing to bot...

6 years ago | 2262 views