# Sergio Yanez-Pagans

### University of Arizona

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**Feeds**

How to numerically calculate the complex roots (eigenvalues) of a determinant?

Maybe this helps: https://www.mathworks.com/matlabcentral/fileexchange/94730-matrix-methods-of-linear-algebra?s_tid=srchtitle...

2 years ago | 0

Solved

Generate a vector like 1,2,2,3,3,3,4,4,4,4

Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2 3 3 3 4...

2 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...

2 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 numbers. Otherwise return false. Example...

2 years ago

Solved

Maximum value in a matrix

Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

2 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 ...

2 years ago

Submitted

Peaks and Dips

Easily allows you to automatically find, plot, and label local maxima (peaks) and local minima on MATLAB

2 years ago | 17 downloads |

Submitted

LineMarks

Adds "line marks" in order to label and identify constant values or allows to highlight data intervals

2 years ago | 3 downloads |

Submitted

Plot,....but plot well!

Fix your horrible default MATLAB plot/graph/figure in 1 easy step

2 years ago | 2 downloads |

Convert 2d image to 3d coordinates

https://www.mathworks.com/matlabcentral/answers/488245-convert-2d-image-to-3d-image-please

2 years ago | 0

Is it possible to use the smooth function with a multidimensional matrix having NaN values?

Maybe this could be useful for you: https://www.mathworks.com/matlabcentral/fileexchange/23287-smooth2a?s_tid=srchtitle Go...

2 years ago | 1

Fill plot with gradient colors

Thank you Dave, that was really useful! Excellent answer =)

2 years ago | 0

Question

Fill plot with gradient colors

I'm trying to plot a signal, for example cos(x), with a red gradient colormap for positive values and a blue one for negative va...

2 years ago | 2 answers | 1

### 2

answersQuestion

tiledlayout within another tiledlayout

Is it possible to have a tiledlayout within another tilelayout? I would like to have 2 tiledlayouts on the same MATLAB figure

2 years ago | 0 answers | 0

### 0

answershow to label lines on a graph

This might be useful: https://www.mathworks.com/matlabcentral/fileexchange/97964-linemarks

2 years ago | 0

multi bar labeling plot

I would suggest trying this: https://www.mathworks.com/matlabcentral/fileexchange/97964-linemarks

2 years ago | 0

How to remove the tic labels but not the marks?

This can also help you to create ticks: https://www.mathworks.com/matlabcentral/fileexchange/97964-linemarks

2 years ago | 0

How do I format tick labels before R2016b?

Maybe this could be useful: https://www.mathworks.com/matlabcentral/fileexchange/97964-linemarks

2 years ago | 0

Indicate peak value of a signal in matlab plot

You could try this: https://www.mathworks.com/matlabcentral/fileexchange/89491-peaks-and-dips

2 years ago | 0

Question

change color of xticklabels or yticklabels

I need help with this: ax = gca; ax.XColor = 'w'; ax.YColor = 'w'; changes the color of the axis and the xticklabels. I want...

3 years ago | 1 answer | 0

### 1

answerHow to save Excel file as a variable and pull data from it?

Using the Import Data option in the Home tab of MATLAB might be the easiest thing to you assuming you don't have tons of sheets ...

3 years ago | 1

Question

Find empty line in text file and build array

Hello everyone, I need help with this, please. If I have a text file (.txt) which contains the following: 1 1 1 1 2 2 2 2 ...

3 years ago | 1 answer | 0

### 1

answerHow do I change the number of decimals in the axis ticks?

This might be more useful given that it only shows relevant ticks and labels (it doesn't only change the format of the label). Y...

3 years ago | 0

Matching deflection/Inflection points of two plotted curves

Hi Ashik, Why don't you try this?: https://www.mathworks.com/help/symbolic/find-asymptotes-critical-and-inflection-points.html...

3 years ago | 0

| accepted

Marking the peak of a plot automatically without having to click on it

You could use my MATLAB File Exchange function: https://www.mathworks.com/matlabcentral/fileexchange/89491-peaks-and-dips ...

3 years ago | 0

How to find peak or dip separation in frequency domain signal

These might work for you: https://www.mathworks.com/matlabcentral/fileexchange/89491-peaks-and-dips Hope you find this use...

3 years ago | 1

| accepted

How do I find the (x,y) coordinates of the peaks and valleys of a graph?

You can use my MATLAB file exchange function, it's really easy to implement and use: https://www.mathworks.com/matlabcentral/...

3 years ago | 0