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...

8 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...

8 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...

8 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...

8 years ago

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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...

8 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...

8 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...

8 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...

8 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...

8 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 ...

8 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...

8 years ago

Solved

Determine if input is odd

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

8 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 ...

8 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...

8 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...

8 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 ...

8 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:...

8 years ago

Answered

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...

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

Answered

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 ...

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

Answered

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...

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

Answered

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 ...

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 ...

9 years ago | 0

Answered

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...

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...

9 years ago | 0

Answered

Agilent visa adaptor

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

Agilent visa adaptor

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

9 years ago | 0

| accepted

Answered

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...

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...

9 years ago | 0

| accepted

Answered

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:/...

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:/...

9 years ago | 1

Answered

Error with LPT port: Failure to open requested data acquisition devide

Hi Sirius, Alas, your issues are classic problems with the parallel interface. We used a number of backdoors in the operatin...

Error with LPT port: Failure to open requested data acquisition devide

Hi Sirius, Alas, your issues are classic problems with the parallel interface. We used a number of backdoors in the operatin...

9 years ago | 1

Answered

DAQ Toolbox use with two NI-USB-6009 devices

What version of MATLAB are you using? I'm guessing you've restarted MATLAB. It should work...We'll figure it out. -Rob

DAQ Toolbox use with two NI-USB-6009 devices

What version of MATLAB are you using? I'm guessing you've restarted MATLAB. It should work...We'll figure it out. -Rob

9 years ago | 0