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Answered

Get unknown variable from mat-file

Given only one variable saved in the mat file: tmpC = struct2cell(load(filename)); myVar = tmpC{1}; Do not worry about the t...

Get unknown variable from mat-file

Given only one variable saved in the mat file: tmpC = struct2cell(load(filename)); myVar = tmpC{1}; Do not worry about the t...

4 hours ago | 0

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Answered

Extracting the numbers from file names and listing them in a column

C = {'Rpma26siatBz 9.500000 Bx 0.000000mT WWait 2.000000Sec.Bzat9.5mT83.png',... 'Rpma26siatBz 9.500000 Bx 100.000000mT WW...

Extracting the numbers from file names and listing them in a column

C = {'Rpma26siatBz 9.500000 Bx 0.000000mT WWait 2.000000Sec.Bzat9.5mT83.png',... 'Rpma26siatBz 9.500000 Bx 100.000000mT WW...

5 hours ago | 0

Answered

sum contents of array in groups of 10

Where V is your 1x3001 vector: M = sum(reshape(V(1:3000),10,[]),1)

sum contents of array in groups of 10

Where V is your 1x3001 vector: M = sum(reshape(V(1:3000),10,[]),1)

7 hours ago | 0

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Answered

How to append for each iteration not using cells?

Replace yield(p) = [yield(p); {helper(k)}]; with yield = [yield; helper(:)];

How to append for each iteration not using cells?

Replace yield(p) = [yield(p); {helper(k)}]; with yield = [yield; helper(:)];

12 hours ago | 0

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Answered

How to solve preallocating speed of a variable?

One simple solution is given here: https://www.mathworks.com/help/matlab/matlab_oop/creating-object-arrays.html "To preallocat...

How to solve preallocating speed of a variable?

One simple solution is given here: https://www.mathworks.com/help/matlab/matlab_oop/creating-object-arrays.html "To preallocat...

12 hours ago | 1

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Answered

Undefined function 'split' for input arguments of type 'char'

The function split was introduced in R2016b, so you will not be able to use it with R2013a. You can probably replace that line ...

Undefined function 'split' for input arguments of type 'char'

The function split was introduced in R2016b, so you will not be able to use it with R2013a. You can probably replace that line ...

14 hours ago | 0

Answered

Accessing data from a struct cell

Assuming that your structure is named S, you can loop over it like this: for k = 1:numel(S) plot(S(k).data) % default plot...

Accessing data from a struct cell

Assuming that your structure is named S, you can loop over it like this: for k = 1:numel(S) plot(S(k).data) % default plot...

1 day ago | 0

Answered

Convert cell array to vector

S = load('timestamps.mat'); T = vertcat(S.ans{:}) M = seconds(mean(diff(duration(T,'InputFormat','hh:mm:ss.SSS'))))

Convert cell array to vector

S = load('timestamps.mat'); T = vertcat(S.ans{:}) M = seconds(mean(diff(duration(T,'InputFormat','hh:mm:ss.SSS'))))

1 day ago | 0

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Answered

Maximum number of repeated values over an array

a = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,9]; x = cumsum([true;diff(...

Maximum number of repeated values over an array

a = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,9]; x = cumsum([true;diff(...

1 day ago | 1

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Answered

How to compare letters if they are same

Rather than building maps by hand, I would get Python to do the heavy lifting, e.g.: baz = @(v)char(v(1)); % only need the firs...

How to compare letters if they are same

Rather than building maps by hand, I would get Python to do the heavy lifting, e.g.: baz = @(v)char(v(1)); % only need the firs...

1 day ago | 0

Answered

How to convert time stamp 11:21:17.155 into seconds in MATLAB??

The most efficient solution: a = '11:21:17.155'; b = [60*60,60,1]*sscanf(a,'%f:')

How to convert time stamp 11:21:17.155 into seconds in MATLAB??

The most efficient solution: a = '11:21:17.155'; b = [60*60,60,1]*sscanf(a,'%f:')

2 days ago | 0

Answered

Is it possible to make a loop where the the result is separate from the loop and have the result respectively with the input?

Use a cell array to store the data: p = 'Quantity of product you have bought today: '; n = str2double(input(p,'s')); c = cell...

Is it possible to make a loop where the the result is separate from the loop and have the result respectively with the input?

Use a cell array to store the data: p = 'Quantity of product you have bought today: '; n = str2double(input(p,'s')); c = cell...

3 days ago | 0

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Answered

"If function" can't distinguish i ~= 1.6.

"This weird thing only happens when i=1.6." Nothing weird happens: you generate binary floating point numbers using two differe...

"If function" can't distinguish i ~= 1.6.

"This weird thing only happens when i=1.6." Nothing weird happens: you generate binary floating point numbers using two differe...

4 days ago | 1

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Answered

replacing loop with cell of index values

s = 1:100; c{1} = 1; c{2} = 1:5; c{3} = 2:2:10; out = cellfun(@(x)s(x),c,'uni',0); out{:} A well-written (i.e. correctly p...

replacing loop with cell of index values

s = 1:100; c{1} = 1; c{2} = 1:5; c{3} = 2:2:10; out = cellfun(@(x)s(x),c,'uni',0); out{:} A well-written (i.e. correctly p...

6 days ago | 1

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Answered

Colors in Matlab as a vriable

Perhaps something like this: M = [1,0,0;... red 1,1,0;... yellow 0,1,0]; % green X = strcmpi(Auto.Farbe,{'red','ye...

Colors in Matlab as a vriable

Perhaps something like this: M = [1,0,0;... red 1,1,0;... yellow 0,1,0]; % green X = strcmpi(Auto.Farbe,{'red','ye...

9 days ago | 0

Answered

Opening multiple .csv files using readtable

% opts is unchanged D = 'C:\Users\krist\OneDrive\Documents\MATLAB'; S = dir(fullfile(D,'*.csv')); for k = 1:numel(S) F =...

Opening multiple .csv files using readtable

% opts is unchanged D = 'C:\Users\krist\OneDrive\Documents\MATLAB'; S = dir(fullfile(D,'*.csv')); for k = 1:numel(S) F =...

9 days ago | 1

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Answered

How to create matrix with other matrixes by joining them?

a = [1 2 3]; b = [4 5 6]; c = [7 8 9]; d = [10 11 12]; res = reshape([a;c;b;d],2,[])

How to create matrix with other matrixes by joining them?

a = [1 2 3]; b = [4 5 6]; c = [7 8 9]; d = [10 11 12]; res = reshape([a;c;b;d],2,[])

10 days ago | 2

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Answered

saving the data in a variable

"...how to change the name of the file when matlab saves it" That is easy: https://www.mathworks.com/help/matlab/import_export...

saving the data in a variable

"...how to change the name of the file when matlab saves it" That is easy: https://www.mathworks.com/help/matlab/import_export...

10 days ago | 0

Answered

How to iterate over cell array, creating only unique combinations of cells

data = {1,2;3,4}; n = numel(data); m = nchoosek(1:n,2) % each row is one combination pair. out = data(m) % output [idr,idc] ...

How to iterate over cell array, creating only unique combinations of cells

data = {1,2;3,4}; n = numel(data); m = nchoosek(1:n,2) % each row is one combination pair. out = data(m) % output [idr,idc] ...

11 days ago | 0

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Answered

how to arrange data into array

Without an intermediate sparse array: R = [1;2;3;4]; C = [10;11;13;15]; V = [1e-5;5e-5;10e-5;15e-5]; % S = max([R,C],[],1);...

how to arrange data into array

Without an intermediate sparse array: R = [1;2;3;4]; C = [10;11;13;15]; V = [1e-5;5e-5;10e-5;15e-5]; % S = max([R,C],[],1);...

11 days ago | 0

Answered

How to count the number of times that values changes?

A = [1;1;1;2;1;3;3;1;1] B = [NaN;cumsum(diff(A)~=0)]

How to count the number of times that values changes?

A = [1;1;1;2;1;3;3;1;1] B = [NaN;cumsum(diff(A)~=0)]

12 days ago | 3

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Answered

Getting rid of loops

Logical indexing is much simpler than using loops: idx = A<1 & A>0; A(idx) = B(idx); A(A<C) = NaN; idy = B>100 | B<0; ...

Getting rid of loops

Logical indexing is much simpler than using loops: idx = A<1 & A>0; A(idx) = B(idx); A(A<C) = NaN; idy = B>100 | B<0; ...

12 days ago | 0

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Answered

How to conditionally merge rows in a table

lat = [45.67, 45.67, 56.89, 78.61]'; lon = [-66.45, -66.45, -65, -67]'; id = [202, 202, 201, 200]'; key = {'A', 'B', 'C', 'C'...

How to conditionally merge rows in a table

lat = [45.67, 45.67, 56.89, 78.61]'; lon = [-66.45, -66.45, -65, -67]'; id = [202, 202, 201, 200]'; key = {'A', 'B', 'C', 'C'...

13 days ago | 0

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Answered

Increment components of vector till a desired limit

for k = 6:100 % or 105 maybe... you can check this. v = reshape(hankel(1:5,5:k),1,[]) end

Increment components of vector till a desired limit

for k = 6:100 % or 105 maybe... you can check this. v = reshape(hankel(1:5,5:k),1,[]) end

13 days ago | 2

Answered

Expected one output from a curly brace or dot indexing expression but there were 2 results

For your code to work the index tn4 must be scalar, but the error message tells us that it is not. Compare: S(1).blah = 1:3; ...

Expected one output from a curly brace or dot indexing expression but there were 2 results

For your code to work the index tn4 must be scalar, but the error message tells us that it is not. Compare: S(1).blah = 1:3; ...

13 days ago | 0

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Answered

behaviour of nargout for anonymous functions

You get two different answers because you are testing two different functions: the function handle to addOne an anonymous func...

behaviour of nargout for anonymous functions

You get two different answers because you are testing two different functions: the function handle to addOne an anonymous func...

13 days ago | 0

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Answered

Combining cell arrays with empty doubles

% slightly more complex example data: a = {[],1;[],[]}; b = {[],[];2,[]}; c = {[],[];[],NaN}; % tmp = cat(3,a,b,c); [~,idp...

Combining cell arrays with empty doubles

% slightly more complex example data: a = {[],1;[],[]}; b = {[],[];2,[]}; c = {[],[];[],NaN}; % tmp = cat(3,a,b,c); [~,idp...

13 days ago | 2

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Answered

How to properly extract dataset and load in new file? Keep getting error.

There is no data field because you saved the array using the name Xs. So you need to use the field Xs (and get rid of the superf...

How to properly extract dataset and load in new file? Keep getting error.

There is no data field because you saved the array using the name Xs. So you need to use the field Xs (and get rid of the superf...

14 days ago | 0

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Answered

How do I insert data into new format based on row positions?

data = [8; 7; 1; 5]; datarowpositions = [0; 0; 0; 4; 0; 1; 0; 2; 0; 0; 3; 0]; desired = datarowpositions; desired(datarowposi...

How do I insert data into new format based on row positions?

data = [8; 7; 1; 5]; datarowpositions = [0; 0; 0; 4; 0; 1; 0; 2; 0; 0; 3; 0]; desired = datarowpositions; desired(datarowposi...

14 days ago | 0

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