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calculate the tangent of angle in radians
Calculate the tangent of angle in degrees

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Determine if a row vector has NaN
Determine if a row vector x has NaN

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Create a square matrix of zeros of even order
Create a square matrix of zeros of even order

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metre to feet converter
The idea is to make a converter, which exchange meters to feets. We use a factor of 1m = 3.281*1f. so 3m are equals to 9.843 m...

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A quadrant matrix
Write a function called quadrants that takes as its input argument a scalar integer named n. The function returns Q, a 2n-by-2n ...

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Variable_Addition
be able to add any variable to the number one

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How to calculate a 2D rotation vector with PCA?
find the angle between the first column of PCA1 and the first column of PCA2 (hint: cos(angle(a,b))*norm(a)*norm(b)=a'*b) and bu...

대략 11년 전 | 0

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Implementing a sine wave with linearly changing frequency
someone deleted his own answer including my own comments to it so, just in case these are interesting to anybody else, I am repe...

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Implementing a sine wave with linearly changing frequency
the formula: sin( 2*pi*f(t)*t ) does not result in the desired sine wave with time-varying frequency. Rather the appropri...

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How to run a repeated-measures t-test in Matlab to determine whether you can reject the null hypothesis.
use <http://www.mathworks.com/help/stats/ttest2.html ttest2> for a two-sample t-test (the two conditions are from two different ...

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F-Test for difference between coefficients
help <http://www.mathworks.com/help/stats/generalizedlinearmodel.coeftest.html coefTest> and use a contrast H that compares t...

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How to get around out of memory issue
If your end-goal is to actually compute that entire 80000 x 80000 matrix, and you do not have enough memory to keep that matrix,...

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Keep GUI functions running when opening an uigetfile Dialog?
No, as far as I know uigetfile will create a modal window (see <http://www.mathworks.com/help/matlab/ref/figure-properties.html#...

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Implementing Breadth first search using connectivity matriX
See <http://www.mathworks.com/help/matlab/ref/dmperm.html _help dmperm_> If I am interpreting correctly, something like the f...

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From inline to anonymous function
if you have the symbolic toolbox: g = matlabFunction(sprintf('[%s; %s]', dx1dt, dx2dt)); otherwise your best bet is proba...

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Sum two cells and write to a third cell
Probaby a loop is going to be fastest, e.g.: for n=1:numel(A) A{n}(:,1)=B{n}(:,1)+C{n}(:,1); end but if you reall...

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Toggle button background color unable to change
I would first check if you are able to change the color of the togglebutton manually, e.g. h = uicontrol('style','togglebutt...

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Matlab GUI and slow execution
not much we can do without seeing the code, but as you suggest one possible reason for the slowing down could be if the number o...

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Calling some MATLAB function with suppressed outputs
Unfortunatley there is not (as far as I know; see for example <http://www.mathworks.com/matlabcentral/newsreader/view_thread/156...

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Hierarchical clustering with only merging neighbouring clusters
I would suggest to request the code from the authors (Thirion et al.? if so, you can start here <https://github.com/bthirion/fro...

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what is the fastest way to do many univariate regression? same Y against different x, one x at a time
Not terribly different in practice, but if you want you could compute all of those regressions simultaneously using a sparse blo...

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Reverse Run-Length Encoder
Given a "counting sequence" vector x, construct the original sequence y. A counting sequence is formed by "counting" the entrie...

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GJam 2015 Rd1B: Counter Culture
This Challenge is derived from <https://code.google.com/codejam/contest/8224486/dashboard#s=p0 GJam 2015 Rd 1B: Counter Culture>...

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String math
You will be given a string that describes a simple math equation. Your job is to determine if the value of the equation is equa...

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Repeat The Components of Matrix
Repeat The components of a matrix so that the size of the output matrix is double to input matrix and components are repeated ne...

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Bruh
Return 'bruh'.

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Matlab code problem (calculate eigenvalues and eigenvectors)
In your example the matrix A is not <https://en.wikipedia.org/wiki/Normal_matrix normal> (check that A*A'-A'*A is not zero), hen...

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Calculate square and cube of number
Calculate square and cube of number x

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Speed of car
Calculate the Speed of car given its Distance travelled and time taken in x and y respectively

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Don't Try, give up and return NaN.
This is another version of <http://www.mathworks.com/matlabcentral/cody/problems/3107-try-and-catch-simple-example problem 3107....

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