解決済み

Create logical matrix with a specific row and column sums
Given two numbers *|n|* and *|s|*, build an |n-by-n| logical matrix (of only zeros and ones), such that both the row sums and th...

6年以上前

解決済み

Great Circle Distance
Find shortest between two points on a ball given their azimuthal and polar angles (in degrees) as well as the radius of the sphe...

6年以上前

解決済み

Angle between Two Vectors
The dot product relationship, a dot b = | a | | b | cos(theta), can be used to determine the acute angle between vector a and ve...

6年以上前

解決済み

Circumscribed circles
Given the lengths of the 3 sides of a triangle, output the radius of the circumscribed circle. Example: [3 4 5] -> 2.5

6年以上前

解決済み

Are you in or are you out?
Given vertices specified by the vectors xv and yv, and a single point specified by the numbers X and Y, return "true" if the poi...

6年以上前

解決済み

Smallest distance between a point and a rectangle
Given two points *x* and *y* placed at opposite corners of a rectangle, find the minimal euclidean distance between another poin...

6年以上前

解決済み

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...

6年以上前

解決済み

Volume of a Parallelepiped
Calculate the volume of a Parallelepiped given the vectors for three edges that meet at one vertex. A cube is a special case ...

6年以上前

解決済み

Are all the three given point in the same line?
In this problem the input is the coordinate of the three points in a XY plane? P1(X1,Y1) P2(X2,Y2) P3(X3,Y3) how can...

6年以上前

解決済み

Calculate the area of a triangle between three points
Calculate the area of a triangle between three points: P1(X1,Y1) P2(X2,Y2) P3(X3,Y3) these three points are the vert...

6年以上前

解決済み

Find third Side of a right triangle given hypotenuse and a side. No * - or other functions allowed
Find the remaining side of a triangle given the hypotenuse and a side. However, the normal functions and symbols are not allowe...

6年以上前

解決済み

Television Screen Dimensions
Given a width to height ratio of a TV screen given as _w_ and _h_ as well as the diagonal length of the television _l_, return t...

6年以上前

解決済み

Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
If _p_ is the perimeter of a right angle triangle with integral length sides, { _a_, _b_, _c_ }, there are exactly three solutio...

6年以上前

解決済み

ASCII Birthday Cake
Given an age and a name, give draw an ASCII birthday cake. For example, given the name "CODY" and the age 5, return a string wit...

6年以上前

解決済み

Find the nearest prime number
Happy 5th birthday, Cody! Since 5 is a prime number, let's have some fun looking for other prime numbers. Given a positive in...

6年以上前

解決済み

Extra safe primes
Did you know that the number 5 is the first safe prime? A safe prime is a prime number that can be expressed as 2p+1, where p is...

6年以上前

回答済み
matrix manipulation - replacing partial matrix subsets in main matrix ???
You can use colon indexing: % Create the two matrices in your example A = ones(3, 5); B = 2 * ones(2, 2); % Use indexing t...

6年以上前 | 1

| 採用済み

回答済み
Reduce trailing zeros of text file
Here's how you use fprintf to export two integer columns followed by three floating point columns: % Create array with 5 column...

6年以上前 | 1

| 採用済み

回答済み
Execute command if timer runs out
A timer object might work: % Define callback callback = @(x,y)disp('hello world'); % Create timer; this will execute TimerF...

6年以上前 | 0

| 採用済み

回答済み
how to set graph size
I'd use daspect to change the aspect ratio of your axes: % Create plot vectors x = [0, 1, 2]; y = [1, 0, 0]; % Plot plot(...

6年以上前 | 0

| 採用済み

回答済み
Tracing boundary in RGB image
You just want the outlines of the colored regions stored in another image, right? You can use the gradient function: % Convert...

6年以上前 | 0

回答済み
Pass GUI information to another GUI depending on a condition
I don't usually use GUIDE, so forgive me if I explain something that GUIDE takes care of automatically. You'll probably want th...

6年以上前 | 0

| 採用済み

回答済み
Geometry question for a pong game
One obvious problem (might be a typo), when you assign _theta_ you use _atan2d_, which returns an angle in degrees, and _atan_, ...

8年以上前 | 0

回答済み
I need to remove some data points from a matrix and then use these points in a function? how would i do this? The matrix is 3x1470, each column refers to XYZ and i am looking to remove all points within a certain radius from the centre.
Here's how to do it using bsxfun: % I'll define 1000 random points in a 100 x 100 x 100 cube (in your case, % you'll jus...

8年以上前 | 0

回答済み
How to display info with mouse over text region inside a figure
Actually, it's not hard at all. MATLAB's pointer manager lets you assign functions to be called whenever the mouse pointer enter...

8年以上前 | 3

解決済み

Triangle sequence
A sequence of triangles is constructed in the following way: 1) the first triangle is Pythagoras' 3-4-5 triangle 2) the s...

9年弱前

解決済み

Side of a rhombus
If a rhombus has diagonals of length x and x+1, then what is the length of its side, y? <<http://upload.wikimedia.org/wikipe...

9年弱前

解決済み

Is this triangle right-angled?
Given any three positive numbers a, b, c, return true if the triangle with sides a, b and c is right-angled. Otherwise, return f...

9年弱前

解決済み

Dimensions of a rectangle
The longer side of a rectangle is three times the length of the shorter side. If the length of the diagonal is x, find the width...

9年弱前

解決済み

Side of an equilateral triangle
If an equilateral triangle has area A, then what is the length of each of its sides, x? <<http://upload.wikimedia.org/wikipe...

9年弱前