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# John

### University of Colorado Denver School of Medicine

21 total contributions since 2014

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How to plot spectrogram on Matlab App Designer with UIAxes?
Please see below for an update using AppDesigner - Using 2021a Requires signal processing toolbox - but spectrogram outputs sho...

1 month ago | 0

Question

Is there a way to track Matlab IDE use?
Is there a way to track Matlab IDE use similar to https://www.software.com/code-time ?

6 months ago | 1 answer | 0

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Question

i2cdev write data arduino
I am using the i2cdev read function in the Matlab Arduino Hardware library to sample user input. Currently, I query the controll...

3 years ago | 0 answers | 0

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Solved

How to subtract?
* Imagine you need to subtract a few numbers using MATLAB. * You will not be using eval for this task. * Given two ASCII strin...

3 years ago

Question

Reading data from the Wii Nunchuck input into Arduino using scanI2CBus
Dear all, I'm trying to read in the data from the Wii Nunchuck input into the Uno Arduino using the read/write functions for ...

4 years ago | 0 answers | 1

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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

4 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 ...

4 years ago

Solved

Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

4 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 ...

4 years ago

Getting subplots with two lines in each plot?
Hello, I modified the function to suppress the plot and output plotting variables. function [t, n, c] = chemostat(initC...

4 years ago | 0

multiscale region growth source code ?
Have you tried this file exchange entry? <https://www.mathworks.com/matlabcentral/fileexchange/19084-region-growing>

4 years ago | 0

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Solved

Is my wife right?
Regardless of input, output the string 'yes'.

4 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...

4 years ago

Solved

Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

4 years ago

Solved

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

4 years ago

Solved

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

4 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 ...

4 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...

4 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:...

4 years ago

Solved

The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

7 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...

7 years ago