Risposto
Move and swap elements between vectors using loops and functions?
Vague question → vague answer: % swap at position k k = 3 c = A(k) A(k) = B(k) B(k) = c
Move and swap elements between vectors using loops and functions?
Vague question → vague answer: % swap at position k k = 3 c = A(k) A(k) = B(k) B(k) = c
circa 8 anni fa | 0
| accettato
Risposto
How to plot a filled box?
Plot each of the sides separately h = fill3([1 1 2 2],[1 2 2 1],[1 1 1 1],'r', ... [1 1 2 2],[1 2 2 1],[2 2 2 2],'r', ....
How to plot a filled box?
Plot each of the sides separately h = fill3([1 1 2 2],[1 2 2 1],[1 1 1 1],'r', ... [1 1 2 2],[1 2 2 1],[2 2 2 2],'r', ....
circa 8 anni fa | 1
| accettato
Risposto
Cumulative Sum for Column of Ones and Zeros
A perfect job for *runindex*: A = [0 1 1 1 0 0 1 1 1 1 0 0 0 1 1 1 1 1 1 0] B = runindex(A) B(A==0) = 0 My functio...
Cumulative Sum for Column of Ones and Zeros
A perfect job for *runindex*: A = [0 1 1 1 0 0 1 1 1 1 0 0 0 1 1 1 1 1 1 0] B = runindex(A) B(A==0) = 0 My functio...
circa 8 anni fa | 2
| accettato
Risposto
Row vector and corresponding column vector for each row
Something like this? % two cell arrays (being column vectors) of strings c1 = {'hello', 'friend'} c2 = {'my' ; 'name'...
Row vector and corresponding column vector for each row
Something like this? % two cell arrays (being column vectors) of strings c1 = {'hello', 'friend'} c2 = {'my' ; 'name'...
circa 8 anni fa | 0
Risposto
I need to write a function to calculate the maximum row sum of a matrix A using a for loop
To get you started current_max = -Inf ; current_max_rowindex = 0; for row_index = 1:size(A,1) row_sum = A(row_in...
I need to write a function to calculate the maximum row sum of a matrix A using a for loop
To get you started current_max = -Inf ; current_max_rowindex = 0; for row_index = 1:size(A,1) row_sum = A(row_in...
circa 8 anni fa | 1
Risposto
Using Cell Arrays to Store a Matrix Each Time Through a Loop
You have multiple iterations using an iterator *i* ... I suggest to use more descriptive variable names :D
Using Cell Arrays to Store a Matrix Each Time Through a Loop
You have multiple iterations using an iterator *i* ... I suggest to use more descriptive variable names :D
circa 8 anni fa | 0
| accettato
Risposto
Subscript indices must either be real positive integers or logicals.
run the script using the *debugger*, and check the contents of the variables when the error occurs >> dbstop on error % or ...
Subscript indices must either be real positive integers or logicals.
run the script using the *debugger*, and check the contents of the variables when the error occurs >> dbstop on error % or ...
circa 8 anni fa | 0
Risposto
How to convert a folder with multiple type of images such as PNG, GiF, JEPG,...etc into JPG and store the converted images in a folder in desktop ?
Why not use a *dedicated* tool to convert images, like good-old IrfanView (does it still exist?) or gimp?
How to convert a folder with multiple type of images such as PNG, GiF, JEPG,...etc into JPG and store the converted images in a folder in desktop ?
Why not use a *dedicated* tool to convert images, like good-old IrfanView (does it still exist?) or gimp?
circa 8 anni fa | 0
Risposto
shift values in an array systematically
Here is one way: x = 1:320 ; dp = 40 ; v11 = repmat(11,1,7) ; c = arrayfun(@(k) [x(k:min(k+39,end)) v11], 1:dp:...
shift values in an array systematically
Here is one way: x = 1:320 ; dp = 40 ; v11 = repmat(11,1,7) ; c = arrayfun(@(k) [x(k:min(k+39,end)) v11], 1:dp:...
circa 8 anni fa | 1
| accettato
Risposto
Save struct indexed name as a variable
You can use FIELDNAMES: FN = fieldnames(stock.TimeSeries_Daily_) % process these names in more common date formats using...
Save struct indexed name as a variable
You can use FIELDNAMES: FN = fieldnames(stock.TimeSeries_Daily_) % process these names in more common date formats using...
circa 8 anni fa | 0
| accettato
Risposto
How do i remove rows that have a blank space in a cell array?
tf = cellfun(@isempty, C_email) % check each cell of the cell array holding the emails C_people(tf) = [] % remove the cell...
How do i remove rows that have a blank space in a cell array?
tf = cellfun(@isempty, C_email) % check each cell of the cell array holding the emails C_people(tf) = [] % remove the cell...
circa 8 anni fa | 0
Risposto
mat ops to locate values and place into new matrix
b = sort(a.*(a==9), 2, 'descend')
mat ops to locate values and place into new matrix
b = sort(a.*(a==9), 2, 'descend')
oltre 8 anni fa | 0
Risposto
FIND command returns empty matrix using ==
Replace _A==B_ with _abs(A-B)<Tol_, where Tol is a value reflecting what difference between A and B should be considered equal. ...
FIND command returns empty matrix using ==
Replace _A==B_ with _abs(A-B)<Tol_, where Tol is a value reflecting what difference between A and B should be considered equal. ...
oltre 8 anni fa | 0
Risposto
How do you crop a Matrix?
You mean the number of dimensions of M is unknown, but Nkeep is known? Use subsref: M = randi(10,4,3,4,5) ; % arbitrary dim...
How do you crop a Matrix?
You mean the number of dimensions of M is unknown, but Nkeep is known? Use subsref: M = randi(10,4,3,4,5) ; % arbitrary dim...
oltre 8 anni fa | 3
Risposto
How to find the first instance of a pattern in a cell array?
It would be much easier if you store this as regular arrays, rather then cell arrays of scalar cells. You can use strfind if all...
How to find the first instance of a pattern in a cell array?
It would be much easier if you store this as regular arrays, rather then cell arrays of scalar cells. You can use strfind if all...
oltre 8 anni fa | 0
Risposto
Uniqueness of values in rows and columns of an array??
An arrangement of unique values in each row and column is known as a Latin Square. For each set of N distinct values there are a...
Uniqueness of values in rows and columns of an array??
An arrangement of unique values in each row and column is known as a Latin Square. For each set of N distinct values there are a...
oltre 8 anni fa | 0
Risposto
How can I equalize the size of all arrays in a cell array?
You want to pad the shorter arrays with zeros? Q_Vic1 = {[1 2 3], [1 2], [1 2 3 4]} ML = max(cellfun(@numel, Q_Vic1)) ...
How can I equalize the size of all arrays in a cell array?
You want to pad the shorter arrays with zeros? Q_Vic1 = {[1 2 3], [1 2], [1 2 3 4]} ML = max(cellfun(@numel, Q_Vic1)) ...
oltre 8 anni fa | 0
| accettato
Risposto
All combinations of binary matrix
G = [1 0 0 0 0 1 1; 0 1 0 0 1 0 1; 0 0 1 0 1 1 0; 0 0 0 1 1 1 1] C = permn([0 1],size(G,1)) R = C * G PERMN can be d...
All combinations of binary matrix
G = [1 0 0 0 0 1 1; 0 1 0 0 1 0 1; 0 0 1 0 1 1 0; 0 0 0 1 1 1 1] C = permn([0 1],size(G,1)) R = C * G PERMN can be d...
oltre 8 anni fa | 0
Risposto
Convert color to value
So you have combinations of red and blue colour values (R,B) that correspond to a some arbitrary single values V according to th...
Convert color to value
So you have combinations of red and blue colour values (R,B) that correspond to a some arbitrary single values V according to th...
oltre 8 anni fa | 0
| accettato
Risposto
generate vector from fixed point
interp1 is your friend. An example: x = [0 4 7 10] y = (x-5).^2 xx = linspace(0,10,13) yy0 = interp1(x,y,xx) % d...
generate vector from fixed point
interp1 is your friend. An example: x = [0 4 7 10] y = (x-5).^2 xx = linspace(0,10,13) yy0 = interp1(x,y,xx) % d...
oltre 8 anni fa | 0
Risposto
Show All Possible Combination and Max. Value
Here is my approach to the first step (getting the sum of all combinations) % step 0, create a small fake data set A = r...
Show All Possible Combination and Max. Value
Here is my approach to the first step (getting the sum of all combinations) % step 0, create a small fake data set A = r...
oltre 8 anni fa | 0
| accettato
Risposto
How EFFICIENTLY to extract multiple column base on multiple condition
Why not simply use direct indexing? r = s.c2(:, s.state)
How EFFICIENTLY to extract multiple column base on multiple condition
Why not simply use direct indexing? r = s.c2(:, s.state)
oltre 8 anni fa | 1
Risposto
sum all combinations of 2d array
And another, faster, solution: a = [1,2,3,4; 5,6,7,8; 9,10,11,12; 13,14,15,16]; % data c = mat2cell(a,size(a,1),ones(1,s...
sum all combinations of 2d array
And another, faster, solution: a = [1,2,3,4; 5,6,7,8; 9,10,11,12; 13,14,15,16]; % data c = mat2cell(a,size(a,1),ones(1,s...
oltre 8 anni fa | 0
Risposto
sum all combinations of 2d array
a = [1,2,3,4; 5,6,7,8; 9,10,11,12; 13,14,15,16]; % data [n,m] = size(a) ; c = permn(1:m, n) ; % get all permutations of...
sum all combinations of 2d array
a = [1,2,3,4; 5,6,7,8; 9,10,11,12; 13,14,15,16]; % data [n,m] = size(a) ; c = permn(1:m, n) ; % get all permutations of...
oltre 8 anni fa | 0
Risposto
Once more... Avoid global variable!
Take a look at the setappdata and getappdata. You can use the root handle to store variables. setappdata(0,'MyVar',1:10) ...
Once more... Avoid global variable!
Take a look at the setappdata and getappdata. You can use the root handle to store variables. setappdata(0,'MyVar',1:10) ...
oltre 8 anni fa | 0
Risposto
How to prevent adding a number to a matrix elements?
Many, if not all, functions rely on scalar expansion to happen for the plus operator. I strongly suggest you either get used to ...
How to prevent adding a number to a matrix elements?
Many, if not all, functions rely on scalar expansion to happen for the plus operator. I strongly suggest you either get used to ...
oltre 8 anni fa | 1
Risposto
Creating a script that finds all triple of the Pythagorean theorem.
ab = nchoosek(1:50,2) ; % all unique combinations of values c = sqrt(sum(ab.^2,2)) ; % hypothenuse tf = c == fix(c) & ...
Creating a script that finds all triple of the Pythagorean theorem.
ab = nchoosek(1:50,2) ; % all unique combinations of values c = sqrt(sum(ab.^2,2)) ; % hypothenuse tf = c == fix(c) & ...
oltre 8 anni fa | 5
Risposto
Find zeros in a part of a matrix
temp = Tarr(5:5:end,2:end) ; % get the relevant portion temp(temp==0) == 12345 ; % your value Tarr(5:5:end,2:end) ...
Find zeros in a part of a matrix
temp = Tarr(5:5:end,2:end) ; % get the relevant portion temp(temp==0) == 12345 ; % your value Tarr(5:5:end,2:end) ...
oltre 8 anni fa | 0
| accettato
Risposto
Improving speed using logical indexing vectorisation of a 3d array
So, let's see if I understood you correctly: * A is an m-by-n-by-3 array to begin with * If A(i,j,1) is less then 0, the thr...
Improving speed using logical indexing vectorisation of a 3d array
So, let's see if I understood you correctly: * A is an m-by-n-by-3 array to begin with * If A(i,j,1) is less then 0, the thr...
oltre 8 anni fa | 0