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The following three lines could be used to create a plot of the Sine function: >> a = 3; >> b = 0: pi/a: 2*pi; >> plot(b,sin(b))
If you split the commands, you might figure it out yourself a = 3 b = 0:pi/a:2*pi y = sin(b) plot(b,y,'o-') % conn...

12年以上前 | 0

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Splitting a matrix by even and odd numbers
use rem to determine which list of numbers is even or odd X = [1 3 4 2 5 4 2] % hint X is the first column of your matrix ...

12年以上前 | 2

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How can I delete certain rows of a matrix based on specific column values?
This is a job for logical indexing! Note that you do not need to loop over all the lines at all Assume A is your matrix. Here...

12年以上前 | 13

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while converting any number to string with num2str() floating numbers aren't preserved.
If you carefully read the help of num2str, you will see that you can use a second argument … <http://www.mathworks.nl/help/ma...

12年以上前 | 0

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I need to split a 256 x 256 matrix into 4 x 4 sub matrix blocks. There will be a total of 4096 blocks. can anyone please help me with this pleaseeeee.
help mat2cell

12年以上前 | 0

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How to replace numbers that are 'greater than or equal to' a specific number and replace them with zero's.
help relop

12年以上前 | 0

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Reshaping (M,N)-matrix to (M,1)-matrix
Another trick using strings: A = [1 2 3 ; 10 11 12 ; 90 0 99] B = str2num(sprintf([repmat('%d',1,size(A,2)) ' '],A.'...

12年以上前 | 1

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how to compare two cells and fetch the values ?
Use cell array of strings, so you can use all the available set functions: y = {'A','B','F'} x = {'A','BBB','C','D','E',...

12年以上前 | 0

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error using subplot,index exceed numbers of subplots
A general solution that loops over the values using a separate index: x=1:1:10 value = 2:2:8 N = numel(value) fo...

12年以上前 | 0

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how to compare the value of a pixel with all other pixel?
You question is a little unclear. But, see help unique M = ceil(10*rand(40,30)) % pixel image uM = unique(M) ; ...

12年以上前 | 0

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Arranging two arrays in ascending order.
Use the second output of sort: A = magic(3) % unsorted values B = reshape(1:numel(A),size(A)) [sortedA,ix] = sor...

12年以上前 | 0

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How to construct this vector without loop?
Here is flexible version *not* using cell2mat: n = 4 ; % user specified V = 3 ; % as in the example -> [1:V 1:2*V ... ...

12年以上前 | 0

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Adding three cells element wise using cellfun
D = cell(size(A)) ; for k=1:numel(A), D{k} = A{k}+B{k}+C{k} ; end

12年以上前 | 0

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how to create a vector of consecutive numbers that skip over certain elements
Another approach: K=[0; 0; 1; 0; 0; 1; 1; 0; 0; 1] R = cumsum(K==0) R(K==1) = 0

12年以上前 | 1

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Hi, can someone help me generate a square matrix with all its elements one, exept its diagonal? As the following
A suggestion: M = diag(1:4)+1

12年以上前 | 0

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How to randomly repeat an array elements?
Here is an approach: P = [1 -1 j -j] N = 16 ; ix = ceil(numel(P)*rand(1,N)) % random indices into P Y = P(ix)...

12年以上前 | 2

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Can someone help implement the perfect shuffle function?
x = 'ABCDEFGHIJKL' m = 3 % the following line pre-allocates an output to store things in, makes things faster! y...

12年以上前 | 0

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How to write this expression in matlab ? Boolean logic
you really should take a look at the logical operators & and | and ~ <http://www.mathworks.nl/help/matlab/ref/logicaloperatorse...

12年以上前 | 1

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how can make a matrix from many vectors?
... and if the vectors are not of the same lengths, you can use <http://www.mathworks.com/matlabcentral/fileexchange/22909-padca...

12年以上前 | 1

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How to enter multiple values for one input prompt
INPUTDLG accepts multiple inputs <http://www.mathworks.nl/help/matlab/ref/inputdlg.html>

12年以上前 | 2

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intersect(A,B) returns the data with no repetitions
I think you are looking for the second output of SORT A = [ 4 1 1 2 3] [B, ix] = sort(A, 'ascend') Now, B equals A(ix...

13年弱前 | 1

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concatenate mutiple tables by repetative process
How are these tables stored in your workspace? Do they all have an individual name (like Table1, MyOtherTable, B, DDDDD, ...)? ...

13年弱前 | 0

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intersect(A,B) returns the data with no repetitions
I do not get it. Will *same* not always be exactly *B*?

13年弱前 | 0

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I think my program is complete.. What happen to this line? u(i)=sin(pi*x(i)); ??
it is still there ... Note that you can make use of the fact that matlab is all about handling matrices (i.e., lists of numbe...

13年弱前 | 1

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Generate random binary matrix
Should all possibilities of such a matrix be equally likely? Then it might be very quite tricky. Here's a brute force approac...

13年弱前 | 1

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problem using counter in a for loop
There are at least two issues with this code: function x = triangle(n) i = 1; for i:n-1 x(i) = i+x(i+1); % (1) BO...

13年弱前 | 1

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Shadowing built-in functions
From the release notes of ML2015a: - New built-in function xbuffer. So check all your miles and change the variable xbuffer i...

13年弱前 | 0

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why is a blank ignored in strcat
This used to be my workaround for the way strcat handles spaces: strrep(strcat('AAA', '#SPACE#', 'BBB'),'#SPACE#',' ')

13年弱前 | 0

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How to write this expression in matlab ? p ^ q ^ r
p^q^r p = true ; q = true ; r = false ; tf = p && q && r help and

13年弱前 | 0

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How do i cut a string after an amount of values or a delimiter
Something along these lines, perhaps (untested!): % data: str = '1 2 3 4 5 6; 7 8 9 10 11 12; 13 14 15 16 17 18' TextT...

13年弱前 | 0