Answered

Concatenate Structures: select structures only if not empty.

This clearly shows the drawback of naming your variables dynamically, like A1, A2, A3, A4. If you change, for instance, the way ...

Concatenate Structures: select structures only if not empty.

This clearly shows the drawback of naming your variables dynamically, like A1, A2, A3, A4. If you change, for instance, the way ...

2 mesi ago | 1

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Answered

How to find slope of this line

You can create a complete list of x,y pairs by expanding x to the size of y. Looking at your code, I think a single element of x...

How to find slope of this line

You can create a complete list of x,y pairs by expanding x to the size of y. Looking at your code, I think a single element of x...

2 mesi ago | 0

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Answered

Dissect a String and create list with Matlab

A = "black || white || pink || yellow" B = split(erase(A,'|')).'

Dissect a String and create list with Matlab

A = "black || white || pink || yellow" B = split(erase(A,'|')).'

2 mesi ago | 0

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Answered

Removing NaNs from a struct

TF = arrayfun(@(k) isnan(AllData.Passive(k).T(1)), 1:numel(AllData.Passive)) AllData.Passive(TF) = []

Removing NaNs from a struct

TF = arrayfun(@(k) isnan(AllData.Passive(k).T(1)), 1:numel(AllData.Passive)) AllData.Passive(TF) = []

3 mesi ago | 1

Answered

Changing Indexing Order in matrix raws

Your question is a little confusing, but here is my take on it: A1 = [0 0 0 0 0 0 0 0 0 1 2 3 4 5] A2 = [12 11 14 5 1] out([n...

Changing Indexing Order in matrix raws

Your question is a little confusing, but here is my take on it: A1 = [0 0 0 0 0 0 0 0 0 1 2 3 4 5] A2 = [12 11 14 5 1] out([n...

3 mesi ago | 1

Answered

Repeating a function n times with different values from a vector

If you organize the input differently, this is not so difficult x = [1 2 ; 3 4 ; 5 6] ; % organized into rows N = size(x,1) ; ...

Repeating a function n times with different values from a vector

If you organize the input differently, this is not so difficult x = [1 2 ; 3 4 ; 5 6] ; % organized into rows N = size(x,1) ; ...

3 mesi ago | 1

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Answered

i have a question that works backwards

What about % X is known F = X D = ones(size(F)) % F ./ (D.^5) equals X or is this to simply thought by me ;-)

i have a question that works backwards

What about % X is known F = X D = ones(size(F)) % F ./ (D.^5) equals X or is this to simply thought by me ;-)

3 mesi ago | 0

Answered

How can i use nchoosek to output both the k combinations and the remaining combinations?

The remaining values can simply be obtained using nchoosek(1:n, n-k), you just have to flip the order of the output :-) n = 7 ...

How can i use nchoosek to output both the k combinations and the remaining combinations?

The remaining values can simply be obtained using nchoosek(1:n, n-k), you just have to flip the order of the output :-) n = 7 ...

3 mesi ago | 2

Answered

How to create a matrix from for loop result?

D = [170, -80, -30, 0, -50, -30, 20, -60, 100, -60 -20]; Iplus=find(D>0); A = [] ; % initialize for i=1:size(Iplus,...

How to create a matrix from for loop result?

D = [170, -80, -30, 0, -50, -30, 20, -60, 100, -60 -20]; Iplus=find(D>0); A = [] ; % initialize for i=1:size(Iplus,...

3 mesi ago | 0

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Answered

How to select desired row

ix = [0:224:81563]' + 1:112 ; % calculate row indices ix(ix>size(A,1)) = [] % remove row indices that are too larger A2 = A(ix...

How to select desired row

ix = [0:224:81563]' + 1:112 ; % calculate row indices ix(ix>size(A,1)) = [] % remove row indices that are too larger A2 = A(ix...

3 mesi ago | 1

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Answered

How to change character in multiple cells in to number 0 and 1?

Sex = {'F','M','F','F','M','M','F'} [~, SexNum] = ismember(Sex, {'F','M'}) SexNum = SexNum - 1 % 1 = 'M', 0 = 'F', -1 = other ...

How to change character in multiple cells in to number 0 and 1?

Sex = {'F','M','F','F','M','M','F'} [~, SexNum] = ismember(Sex, {'F','M'}) SexNum = SexNum - 1 % 1 = 'M', 0 = 'F', -1 = other ...

3 mesi ago | 0

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Answered

load files whith a previus specified name

Didn't you just make a simple typo? % Aplha vs Alpha % | |

load files whith a previus specified name

Didn't you just make a simple typo? % Aplha vs Alpha % | |

3 mesi ago | 1

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Answered

Using numpad 8 2 6 4 as North South East West

Perphaps my getkey function may be of use to you: https://www.mathworks.com/matlabcentral/fileexchange/7465-getkey

Using numpad 8 2 6 4 as North South East West

Perphaps my getkey function may be of use to you: https://www.mathworks.com/matlabcentral/fileexchange/7465-getkey

3 mesi ago | 0

Answered

I keep getting the error message that vectors must be the same length in the plot command

So, apparently the two vectors are not of the same length. You really should learn how to debug your own code. Set a breakpoint ...

I keep getting the error message that vectors must be the same length in the plot command

So, apparently the two vectors are not of the same length. You really should learn how to debug your own code. Set a breakpoint ...

3 mesi ago | 1

Answered

Select random elements from three consecutive columns in a big matrix?

M = magic(5) % input data N = 4 % number of selections nC = 3 % number of consecutive columns % engine szM = size(M) r...

Select random elements from three consecutive columns in a big matrix?

M = magic(5) % input data N = 4 % number of selections nC = 3 % number of consecutive columns % engine szM = size(M) r...

3 mesi ago | 0

Answered

select random row inside the cell

You want the row, or the row number to be returned? A={[1,4,6;6,5,4;1,2,4],[1,3;5,4],[1,2;1,7;6,8]} rownumber = cellfun(@(c)...

select random row inside the cell

You want the row, or the row number to be returned? A={[1,4,6;6,5,4;1,2,4],[1,3;5,4],[1,2;1,7;6,8]} rownumber = cellfun(@(c)...

3 mesi ago | 0

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Answered

Vectorizing nested for loops

A = magic(5) d = squareform(pdist(transpose(A))) % transpose to obtain vecnorm between columns pdist and squareform are part ...

Vectorizing nested for loops

A = magic(5) d = squareform(pdist(transpose(A))) % transpose to obtain vecnorm between columns pdist and squareform are part ...

3 mesi ago | 1

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Answered

how to find the element which is greater than or equal to its row and smaller or equal to its column in a matrix

function out = saddle(M) [r, c] = ind2sub(size(M), 1:numel(M)) ; tf = arrayfun(@(r, c) all(M(r, c) >= A(:, c)) && all(M(r, c) ...

how to find the element which is greater than or equal to its row and smaller or equal to its column in a matrix

function out = saddle(M) [r, c] = ind2sub(size(M), 1:numel(M)) ; tf = arrayfun(@(r, c) all(M(r, c) >= A(:, c)) && all(M(r, c) ...

3 mesi ago | 0

Answered

omit same element inside cell

You can convert the elements of each cell to a char array and apply unique on that cell array of chars. A = {[1,2,3,4],[4,2,3],...

omit same element inside cell

You can convert the elements of each cell to a char array and apply unique on that cell array of chars. A = {[1,2,3,4],[4,2,3],...

3 mesi ago | 1

Answered

How to store vectors into a matrix that have different sizes?

Next to cell arrays, you can also use struct arrays, which can be more ... euh ... structured than cell arrays ;-) a(1).data = ...

How to store vectors into a matrix that have different sizes?

Next to cell arrays, you can also use struct arrays, which can be more ... euh ... structured than cell arrays ;-) a(1).data = ...

3 mesi ago | 0

Answered

Repeating or rerunning a loop

Use a while loop, which is more flexible than a for -loop. Something like this might work: seq = [3, 1, 2, 1, 3, 2]; % trial se...

Repeating or rerunning a loop

Use a while loop, which is more flexible than a for -loop. Something like this might work: seq = [3, 1, 2, 1, 3, 2]; % trial se...

4 mesi ago | 0

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Answered

Probability of exactly one even number

I suggest you use two counters: one counting the numbers of even values in a single throw, and one counting the number of throws...

Probability of exactly one even number

I suggest you use two counters: one counting the numbers of even values in a single throw, and one counting the number of throws...

4 mesi ago | 1

Answered

How can I get a infinite loop in matlab?

an infinite loop k = 0 ; while true % useful code here k = k + 1 ; disp(k) end But are you sure you want an...

How can I get a infinite loop in matlab?

an infinite loop k = 0 ; while true % useful code here k = k + 1 ; disp(k) end But are you sure you want an...

4 mesi ago | 0

Answered

How to use varargin: to specify a second input variable with separate output

You cannot compare strings with different lengths using ==. Use isequal or strcmpi instead, for instance: if isequal(lower(vara...

How to use varargin: to specify a second input variable with separate output

You cannot compare strings with different lengths using ==. Use isequal or strcmpi instead, for instance: if isequal(lower(vara...

4 mesi ago | 1

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Answered

Removing a Range of Elements from an array

ix = find(M(:,12) > 750, 1, 'first') % find the row index of the first element in the 12th column of A being larger than 750 M...

Removing a Range of Elements from an array

ix = find(M(:,12) > 750, 1, 'first') % find the row index of the first element in the 12th column of A being larger than 750 M...

4 mesi ago | 0

Answered

How do i average all result in total loop,if some result in some of loop are NaN

Store each result in an array and average after the loop. An example: c = nan(1,10) ; % pre-allocation for speed for k = 1:10 ...

How do i average all result in total loop,if some result in some of loop are NaN

Store each result in an array and average after the loop. An example: c = nan(1,10) ; % pre-allocation for speed for k = 1:10 ...

4 mesi ago | 0

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Answered

Counting occurrences of a pair of numbers in a logical vector

A vectorised alternative: A = [0 1 0 0 1 0 0 0 0 0 1 1 0 0 1 0 1 ]; % Input vector ix = find(A) ix = ix(2:2:end) B = cumsum(...

Counting occurrences of a pair of numbers in a logical vector

A vectorised alternative: A = [0 1 0 0 1 0 0 0 0 0 1 1 0 0 1 0 1 ]; % Input vector ix = find(A) ix = ix(2:2:end) B = cumsum(...

4 mesi ago | 0