# Juan Villacrés

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Ph.D. (c) in Electronic engineering

**Programming Languages:**

MATLAB

**Spoken Languages:**

Spanish

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**Feeds**

Solved

Jack O'Lantern

If visualized correctly, the data contained in the matrix A will look like a jack-o'-lantern. Create a function that will visu...

ungefär 2 år ago

Solved

Plot Line Specifications

Create a line plot for function cos(x) where x is a vector of linearly spaced values going from 0 to input N with an increment o...

ungefär 2 år ago

Solved

Create a figure and plot data

Given two data vectors (x,y), open a new figure and plot the data. Return the figure handle.

ungefär 2 år ago

Solved

Reproduce this plot!

Write a function that will take a dataset (x,y), a best fit model (model), and the upper and lower prediction bounds (lb,ub) for...

ungefär 2 år ago

Solved

Plotting Practice

Plot cos(x) vs x as shown in the figure below. Include the appropriate title, x-label, and y-label. Note, it is case sensitive. ...

ungefär 2 år ago

Solved

Power Outages Histogram

Create a function that takes power outage data as an input and creates a histogram of the number of outages as a function of Reg...

ungefär 2 år ago

Solved

Plot Damped Sinusoid

Given two vectors |t| and |y|, make a plot containing a blue ( |b| ) dashed ( |--| ) line of |y| versus |t|. Mark the minimum...

ungefär 2 år ago

Solved

Matrix Quadrants

Write a function that takes N as the input, and outputs a matrix whose upper-left (NxN) quadrant contains all ones, the lower-ri...

ungefär 2 år ago

Solved

Find Closest Constant

Given a number x, return the value that is closest to x from this list of constants: 0, 1, , e, , (also known as ). For exampl...

ungefär 2 år ago

Solved

Find the minimum of the column-maximums of a matrix

Given a matrix A, find the maximum value of each column, then return the smallest of those maximum values (ie return the minimum...

ungefär 2 år ago

Solved

Calculate the mean of each half of a matrix

Given a matrix with an even number of columns, n, return a 1-by-2 row vector where the first element is the mean of all the elem...

ungefär 2 år ago

Solved

Simpson's Paradox - Calculate correlation coefficients for groups of data

Simpson's Paradox is a statistical phenomenon where groups of data can have a characteristic while the whole data set together h...

ungefär 2 år ago

Solved

Calculating Student Grades

The matrix grades contains raw grades for 7 students who took your course. Each row represents a different student. The first 7 ...

ungefär 2 år ago

Solved

Determine if x is a combination of m and n

Given positive integers x, m, and n, determine if x can be written as x = am + bn for any (non-negative) integers a and b. Your ...

ungefär 2 år ago

Solved

Dog Statistics

The vectors ht and wt contains the heights and weights of 20 golden retrievers. In some cases, it was not possible to make both ...

ungefär 2 år ago

Solved

Generate this matrix

Generate the following matrix. n = 2; out = [-4 -3 -2 -1 0 -3 -2 -1 0 1 -...

ungefär 2 år ago

Solved

Create an arrow matrix

An arrow matrix is a square matrix that contains ones on the diagonal, the last column, and last row. ...

ungefär 2 år ago

Solved

3D Plots and Colorbars

Use the matrices X, Y, and Z provided in the function template to create a surface plot. Add a colorbar to the surface plot and ...

ungefär 2 år ago

Solved

The Piggy Bank Problem

Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...

ungefär 3 år ago

How to make predictions wit Partial Least Squares (PLSregress)

Hi, this is the way to get the prediction. y_pred = [ones(size(X_test ,1),1) X_test]*betaPLS; https://www.mathworks.com/matl...

nästan 6 år ago | 1