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# Robert Brown

##### Last seen: 16 days ago
24 total contributions since 2021

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Rescale Scores
Each column (except last) of matrix |X| contains students' scores in a course assignment or a test. The last column has a weight...

25 days ago

Question

how can I gracefully exit a while loop, when reading from a data file of variable length, and the file may terminate abruptly and incompletely when written
here is some sample code with comments on what is happening... (actual code reads huge file with huge messages... shortened her...

25 days ago | 2 answers | 0

### 2

how to create matrix?
you can specify the elements of a 3x3 matrix as follows: >> a = [1 2 3; 4 5 6; 7 8 9] the result will be a = 1 2 ...

26 days ago | 0

How do I plot a point on a graph?
Add these lines to the bottom of your code, to plot the desired value as a red asterisk on the existing plot with the other data...

26 days ago | 0

How can I determine the y-intercept from known x and y values?
define a vector, x x = 1:10 define a slope, m define an intercept, b NOTE: I did this for the example, to generate the da...

26 days ago | 0

| accepted

DCT transformation
Couldn't find your image, so I found 'rice.png' within MATLAB I = im2double(imread('rice.png')); Display the rice.png image,...

26 days ago | 0

How to make lines plotted as dots for discontinuous data more visible in legend?
Following Chris LaPierre's advice above... plot the graphs as a group with lines at only the first point, then plot the the gra...

27 days ago | 1

| accepted

Why is my code a matrix and not a double
1 e = [0.01; 2 0.1; 3 0.5; 4 0.9]; 5while j <= 4 6 while i <= 7 7 if M(i,j) > -pi && M(i,j) < 0 || M...

28 days ago | 0

Solved

Calculate BMI
Given a matrix |hw| (height and weight) with two columns, calculate BMI using these formulas: * 1 kilogram = 2.2 pounds * 1 ...

1 month ago

Solved

Verify Law of Large Numbers
If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....

1 month ago

Solved

Find the Oldest Person in a Room
Given two input vectors: * |name| - user last names * |age| - corresponding age of the person Return the name of the ol...

1 month ago

Solved

Convert from Fahrenheit to Celsius
Given an input vector |F| containing temperature values in Fahrenheit, return an output vector |C| that contains the values in C...

1 month ago

Solved

Calculate Amount of Cake Frosting
Given two input variables |r| and |h|, which stand for the radius and height of a cake, calculate the surface area of the cake y...

1 month 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]; ...

1 month 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...

1 month 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...

1 month 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...

1 month 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 ...

1 month ago

Solved

Given a and b, return the sum a+b in c.

1 month 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...

1 month 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:...

1 month ago

Quantization of a standard Cosine signal
%% Description of Z1 First, we recognize that loop is equal to sample number. So L_level(loop) is the quantization level of th...

1 month ago | 0