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Senaasa


Pennsylvania State University

Active since 2013

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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:...

6 years ago

Question


National Instruments DAQMX function support in matlab
Hi, I have a national instruments PCI-DIO-32HS digital card and I'm trying to use matlab's data acquisition toolbox. I have D...

8 years ago | 0 answers | 0

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answers

Question


Logical indexing with matrix issue
I ran into this issue writing a program using logical indexing. Suppose you have A=ones(32,10); M=zeros(32,10); N=one...

8 years ago | 1 answer | 0

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answer

Question


Is it possible to vectorize this loop?
Hi, I've been trying to figure out a way to optimize this bit of code by vectorizing the loop. I can't find a good way to do ...

8 years ago | 2 answers | 0

2

answers

Question


Indexing to subtract sections of an array
Hi, Say you have an 1x80000 row vector and need to subtract by blocks of 64 every so many elements. For example A = rand...

8 years ago | 4 answers | 0

4

answers

Question


Caught unexpected exception of unknown type TCP/IP device connection
Hi, I'm trying to connect a Newport XPS motion controller to Matlab via TCP/IP. I'm running 64bit 2012b on win7 64bit. The code...

8 years ago | 0 answers | 0

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answers

Question


loadlibrary error with 64bit dll and header
Hi, I have three 64bit files (XPS_C8_DRIVERS.dll, XPS_C8_DRIVERS.lib and XPS_C8_DRIVERS.h), when trying to use loadlibr...

8 years ago | 2 answers | 0

2

answers

Question


How to vectorize this loop? Subsequental subtraction of columns within a matrix
I'm trying to vectorize the following loop: a=rand(1000,100); j=1; k=2; tic for i=1:50; b(:,i)=a...

8 years ago | 1 answer | 0

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answer

Question


Using matlab and java to control a mouse on another computer
Hi, I know it's possible to control the mouse on a computer running matlab via a java robot (http://www.mathworks.com/matlabc...

9 years ago | 0 answers | 0

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answers

Question


Using fprintf and instrument control toolbox with serial connection
Hi, I'm trying to send commands to a monochromator (CM110/112) connected to a cpu (RS232). I've successfully connected to the...

9 years ago | 1 answer | 0

1

answer

Question


Convolution on a nonlinearly spaced data set.
Hi, I am currently trying to use conv on a data set that is nonlinearly spaced. The convolution works, the issue I'm having i...

9 years ago | 1 answer | 0

1

answer

Answered
Basic questions on conv function
Hi all, For those who run into this problem, I found that after you perform the full conv, you need to shift the time axis by...

9 years ago | 0

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Solved


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

9 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...

9 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 ...

9 years ago

Question


Basic questions on conv function
Hi, Suppose I have the following code: t=(-1:.1:5); %Time axis for i=1:1:length(t); if t(i)<0 ...

9 years ago | 4 answers | 0

4

answers

Question


Calculating a convolution using conv vs. a loop
Hi, I'm currently calculating the convolution of a Gaussian and a power law using the following code snippet: for j=1:...

9 years ago | 0 answers | 1

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answers

Question


Splitting an axis into a linear and log scale
Hi, I'm interested in splitting the x-axis of a plot into a linear section and a log section. For example, I want to plot -1 ...

9 years ago | 2 answers | 0

2

answers

Question


Using nlparci and getting the error Cannot compute confidence intervals for complex values
Hi, I'm trying to get the confidence intervals using the following code: options=optimset('display','iter', 'MaxIter', 5...

9 years ago | 0 answers | 0

0

answers

Question


Finding the largest index in an array that is divisible by a certain number
Hi, Given an nx1 array, I'm trying to get matlab to determine the largest index value which is divisible by a number (say 3),...

9 years ago | 1 answer | 0

1

answer

Question


Breaking down a large array
Hi, I have a large array (nx1) of values that I'd like to break up into a new array. This new array takes the first 200 or so...

9 years ago | 1 answer | 0

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answer