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Plotting exponential curves with random numbers.
Here is something to get you started x = linspace(-10,10,100) ; hold on % help! for k = 1:5, B = 0.15 + (0...

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How to plot number of box plots in a single figure? each box plot is a verctor of variable length.
Here is an example. % Given two column vectors with different lengths V1 = 5 + 10 * randn(7,1) ; V2 = 10 ...

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How to determine samplenumber for fixed distance-intervals?
For examples, I prefer integers, so I upscaled everything by a factor 10. % your data M = [0 1 4 6 8 10 12 14 16 17 18 1...

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Unsure of how to use and understand rand function
It is always insightful to look at a smaller example: A = [ 4 2 3 1 ; 5 4 2 3 ; 6 7 8 9 ; 1 4 2 5] % just 2-by-2 instead of...

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IF / ELSE Usage within For loop for Specific Iteration Only
As a follow-up, if you only need to perform the statements within a for-loop when the iterator takes specific values, you can ch...

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Do while loop in Matlab
A do-while loop in disguise: while true % statements here % if ~WhileCondition, break ; end end or

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How to replace element matrix with the other matrix?
Even simpler: % example data A = 99 * ones(2,2) B = -1 * ones(6,8) % engine szA = size(A) i0 = (size(B)-sz...

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How to replace element matrix with the other matrix?
To replace the central portion of B with A try this % example data A = 2 * ones(2,2) B = -3 * ones(6,8) % eng...

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Including comments in a .mat file?
Another option might be to use a structure: A.values = [21 22 35] A.label = 'temperature' A.unit = 'degrees Cels...

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Fast matrix multiplication in loop
Two options: 1. *pre-allocate* C to avoid memory allocation in each iteration C = zeros(N, ..) % pre-allocation for ...

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i want all the combinations for [abc]...like abc, ab, ac, bc, a, b, c. can anyone help..Plz...
Take a look at my NCHOOSE function on the File Exchange as it does exactly what you're after. S = nchoose('abc') % S = {...

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How to replace element matrix with the other matrix?
I suggest that you give *a smaller example of A and B* and the required output.

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Help with linear fit
Here's how: tf = x > x1 & x < x2 % true for x1 < x < x2 p = polyfit(x(tf), y(tf),1) % fit on selection

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Finding Consecutive True Values in a Vector
Hide the loops ;-) input = [1 0 1 1 0 0 1 1 1 0 1 0 1 1 1 1 0] [~,~,C] = logicalfind(input,1) ; C = cellfun(@cums...

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use of conditional statement
Here is an example to obtain low intensities. It is often handy to keep the original format and set the elements you are not int...

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discrete value to binary value
what are discrete values? integers in decimal notation? help dec2bin dec2bin(9)

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Out of memory error in combination combnk
*Questions* # Do you need them all 1.2652e14 at the same time? (Impossible!) # Do you need only a random fraction of these? ...

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Adding noise with certain standard deviation to uncorrupted data
In addition to Wayne's suggestion you can sample noise from any distribution with unknown parameters and set the standard deviat...

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Import excel file with comma for decimal and dates
In excel and/or in Windows System settings (i do not know where) change the settings of the decimal notation to dot and to the r...

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please help me sort this out
When column number does matter: % A : a N-by-M array % B : a 1-by-N row vector [~, ii] = max(sum(bsxfun(@eq,A,B),2)) ...

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Why the preallocated matrix perform slower in the case below?
You are not doing the same thing, as it takes time to evaluate the indices into ZZn, as well as temporary memory to store them. ...

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Random Binary Sequence Generator
Here are two suggestions: % with 0 <= P <=1 RBS = rand(1,N) < P % will give roughly a proportion of P ones among ...

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concatenate each element of two arrays
A=['a' 'b' 'c'] B = ['1' '2'] C = allcomb(A,B) ALLCOMB can be found here: http://www.mathworks.com/matlabcentral/f...

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How i use a variable name to do a fid=fopen?
Create a function m-file, where you can use a variable. function MyProgram (MyInputFile) % MYPROGRAM (FILE) opens the ...

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Finding values in an Array
Apply some arithmetic: Subject = [126 156 1992 203 186 10 100 100000] Group = fix(Subject ./ (10.^floor(log10(Subject)...

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LOGICALFIND
Find occurrences of consecutive non-zeros in a vector (v1.0, jan 2014)

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5.0 / 5

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Can you help me solving that?
No need for an explicit loop as you can exploit the power of MatLab with *BSXFUN*. % example data A =[1 2 3 4 5 6 7 ...

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Matrix Multiplications (Altar Output Matrix Size)
Your question is a little confusing. Do you intend to do element-by-element multiplication or matrix multiplication? Assuming...

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change values in a matrix
Another problem needs another solution: a = [0.1234 -1.9876 -2.0001 22.9999] b = a % work on a copy q = ...

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How does command STEM work for complex numbers?
STEM uses PLOT to make its lines. The documentation of PLOT is clear on complex numbers: _PLOT(Y) plots the columns of Y vers...

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