Solved

Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

7 years ago

Solved

Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

7 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...

7 years ago

Solved

Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

7 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 other numbers. Otherwise return false. E...

7 years ago

Solved

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...

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

Solved

Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

7 years ago

Solved

Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

7 years ago

Solved

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

7 years 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...

7 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 ...

7 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...

7 years ago

Solved

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

7 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 ...

7 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...

7 years 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. Example...

7 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 ...

7 years ago

Solved

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

7 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:...

7 years ago

Data acquisition with pre-trigger using low-level DAQmx functions (daq.ni.NIDAQmx library)
Hi Ray, This is a really nice piece of code, and our exact intent when we provided undocumented access to the interface. How...

8 years ago | 0

How to use MATLab and NI-DAQmx Tools to produce live plots
Visit the <http://www.mathworks.com/products/daq/demos.html demos and examples page> for the Data Acquisition Toolbox. See the ...

8 years ago | 0

PCI-6229 not recognised by Matlab R2011b
Can you see your device in NI Measurement and Automation Explorer? Until you see it there, it can't show up in MATLAB. To u...

8 years ago | 0

| accepted

How to import a continuous signal from USB-6009 to an Oscilloscope (DAQ toolbox)
The USB-6009 doesn't support hardware clocked outputs. There's no way to have it generate a smooth curve. You're on the right ...

8 years ago | 0

Trouble reading Tektronix DPO 3012 Oscilloscope
If you get an object back at the command line, you're good to go! You can call fopen on it. If you want to work in TMTOOL, ri...

8 years ago | 0

You need R2009b or later -- <http://www.mathworks.com/products/instrument/whatsnew.html support for 64-bit Agilent VISA was adde...

8 years ago | 0

| accepted

Problem with CDAQ 9172 communication
R2011a of the Data Acquisition Toolbox requires NI-DAQmx version 9.1 -- you're running 8.9. See the <http://www.mathworks.com/h...

8 years ago | 0

| accepted

Problem with NI DAQ 6212 USB BNC
Support for this device was added in R2010a. However, a search for "6212 USB BNC" on the MathWorks website leads to: <http:/...

8 years ago | 1