Answered
Counting the Same Occurance of a row string
A solution with less calls to unique: P = {'ADS','µSOIC8';'AVX','0603';'AVX','0603';'AVX','0603';'ELN','';'EPC','0603';'EPC','0...
Counting the Same Occurance of a row string
A solution with less calls to unique: P = {'ADS','µSOIC8';'AVX','0603';'AVX','0603';'AVX','0603';'ELN','';'EPC','0603';'EPC','0...
7 years ago | 0
Answered
Randomly select an element from a vector satisfying a condition
This is a two-step process: create an intermediate array with all elements of X satisfying your condition select a single elem...
Randomly select an element from a vector satisfying a condition
This is a two-step process: create an intermediate array with all elements of X satisfying your condition select a single elem...
7 years ago | 0
Answered
Count the adjacent same elements in a vector
This is call run-length encoding, for which you can find excellent function on the File exchange. For instance, [shameless self ...
Count the adjacent same elements in a vector
This is call run-length encoding, for which you can find excellent function on the File exchange. For instance, [shameless self ...
7 years ago | 1
Answered
I am supposed to get list of matrices but I am getting this.What do they mean?
Your variable is a cell array, which is a very useful and common way to store things in matlab. Read more on cell arrays in the ...
I am supposed to get list of matrices but I am getting this.What do they mean?
Your variable is a cell array, which is a very useful and common way to store things in matlab. Read more on cell arrays in the ...
7 years ago | 1
Answered
Storing Matrices from a for loop
One option is to use an index to loop over the values, like this. You can than directly use that index to create a cell array to...
Storing Matrices from a for loop
One option is to use an index to loop over the values, like this. You can than directly use that index to create a cell array to...
7 years ago | 1
| accepted
Answered
Using the switch statement inside the for loop.
I suggest you try to avoid a switch statement inside the for-loop as this will probably slow down things a lot. Depending on wha...
Using the switch statement inside the for loop.
I suggest you try to avoid a switch statement inside the for-loop as this will probably slow down things a lot. Depending on wha...
7 years ago | 0
Answered
2-x axes and 1-y axis
What about 'abusing' plotyy? x = 0:0.01:20; y1 = 200*exp(-0.05*x).*sin(x); y2 = 0.8*exp(-0.5*x).*sin(10*x); plotyy(x, y1, x,...
2-x axes and 1-y axis
What about 'abusing' plotyy? x = 0:0.01:20; y1 = 200*exp(-0.05*x).*sin(x); y2 = 0.8*exp(-0.5*x).*sin(10*x); plotyy(x, y1, x,...
7 years ago | 0
Answered
Plotting a series for n>=1
I suggest you avoid meshgrid here. Another tip is to rewrite your function to a somewat simpler form, so you do not loose track ...
Plotting a series for n>=1
I suggest you avoid meshgrid here. Another tip is to rewrite your function to a somewat simpler form, so you do not loose track ...
7 years ago | 0
Answered
Find out if X out of Y elements of an array are true
Let TF be your logical array and X the index of the last updated element then ConditionIsMet = TF(x) && sum(TF) == 4 will be t...
Find out if X out of Y elements of an array are true
Let TF be your logical array and X the index of the last updated element then ConditionIsMet = TF(x) && sum(TF) == 4 will be t...
7 years ago | 0
| accepted
Answered
matrix with mixed data ?
A table is the most obvious choice for this, especially if you want to do statistics. I suggest you read the manual on tables.
matrix with mixed data ?
A table is the most obvious choice for this, especially if you want to do statistics. I suggest you read the manual on tables.
7 years ago | 0
| accepted
Answered
requirement Switch & Case expression with matrix
I suggest you use ISMEMBER with the rows option, rather than if-else (or switch) fieldlist = [x3 y3 ; x1 y1 ; x2 y2] ; filed...
requirement Switch & Case expression with matrix
I suggest you use ISMEMBER with the rows option, rather than if-else (or switch) fieldlist = [x3 y3 ; x1 y1 ; x2 y2] ; filed...
7 years ago | 0
Answered
analyze Consecutive points in an array
Let x be your vector. MyFun = @(i) x(i)>=0.2 && x(i+1)>=0.2 && x(i+2)>=0.2 && x(i-1)<0.2 && x(i-2)<0.2 % MyFun(k) will return ...
analyze Consecutive points in an array
Let x be your vector. MyFun = @(i) x(i)>=0.2 && x(i+1)>=0.2 && x(i+2)>=0.2 && x(i-1)<0.2 && x(i-2)<0.2 % MyFun(k) will return ...
7 years ago | 1
| accepted
Answered
Transform NaN into number
This function recursively looks at all fields of the structure and replaces any NaNs by a value. Also works for structure arrays...
Transform NaN into number
This function recursively looks at all fields of the structure and replaces any NaNs by a value. Also works for structure arrays...
7 years ago | 1
Submitted
RANDPERMFULL
RANDPERMFULL (N) returns a random derangement (complete permutation) of the integers from 1 to N
7 years ago | 534 downloads |
Answered
cell2mat conversion
Do you want to convert the 1-by-28 cell array C, each cell holding a 10-by-25 double matrix to a 3D double array M of size 10-by...
cell2mat conversion
Do you want to convert the 1-by-28 cell array C, each cell holding a 10-by-25 double matrix to a 3D double array M of size 10-by...
7 years ago | 0
Answered
Follow up: How can I merge two different tables using the first column in common?
% data, (showing the drawback of storing relates things in different variables) A = [1 7; 3 15] B = [2 9; 5 10] ...
Follow up: How can I merge two different tables using the first column in common?
% data, (showing the drawback of storing relates things in different variables) A = [1 7; 3 15] B = [2 9; 5 10] ...
7 years ago | 0
| accepted
Answered
Any small program that is also really cool?
Take a look at the function why.m >> type why
Any small program that is also really cool?
Take a look at the function why.m >> type why
7 years ago | 0
| accepted
Answered
Error in the for loop or equality sign
Welcome to the world of floating point arithmetic, where if 0.1+0.2 == 0.3 disp('0.1+0.2 equals 0.3') else disp('0.1...
Error in the for loop or equality sign
Welcome to the world of floating point arithmetic, where if 0.1+0.2 == 0.3 disp('0.1+0.2 equals 0.3') else disp('0.1...
7 years ago | 1
Answered
is there any way to replace this code part with an equivalent part that runs faster?
help cumsum
is there any way to replace this code part with an equivalent part that runs faster?
help cumsum
7 years ago | 0
Answered
Combination of X and Y vectors to get all possible positions on a Cartesian plane
For two vectors, x and y, this might be faster than ndgrid (not tested) xy = [repelem(x(:), numel(y), 1) repmat(y(:), numel(x),...
Combination of X and Y vectors to get all possible positions on a Cartesian plane
For two vectors, x and y, this might be faster than ndgrid (not tested) xy = [repelem(x(:), numel(y), 1) repmat(y(:), numel(x),...
7 years ago | 0
Answered
Adding Zeroes and Ones into a Vector
Inserting elements at specific locations is not trivial. Years ago I wrote a function INSERTROWS that does this https://uk.math...
Adding Zeroes and Ones into a Vector
Inserting elements at specific locations is not trivial. Years ago I wrote a function INSERTROWS that does this https://uk.math...
7 years ago | 1
Answered
constructing symatrical matrix out of vector
v = [1, 2*6, 2*7, 2*8, 2*9, 2, 2*10, 2*11 2*12, 3, 2*13, 2*14, 4, 2*15, 5] % | % I ass...
constructing symatrical matrix out of vector
v = [1, 2*6, 2*7, 2*8, 2*9, 2, 2*10, 2*11 2*12, 3, 2*13, 2*14, 4, 2*15, 5] % | % I ass...
7 years ago | 0
| accepted
Answered
How to find first '1' in every row
Not better than using max (for this type of input), but just to show you an alternative: A = [ 0 0 0 0 0 0 1 1 1 1 0 0; 0 0 0 ...
How to find first '1' in every row
Not better than using max (for this type of input), but just to show you an alternative: A = [ 0 0 0 0 0 0 1 1 1 1 0 0; 0 0 0 ...
7 years ago | 1
Answered
How writing code sum 1+2+3+4+...+n
or know your math classics ... n = 120345428372 s = n*(n+1)/2 % sum(1:n) will fail!
How writing code sum 1+2+3+4+...+n
or know your math classics ... n = 120345428372 s = n*(n+1)/2 % sum(1:n) will fail!
7 years ago | 1
Answered
How to output random number each time a for loop repeats?
You can use an extra variable to keep track of the letters that were guessed correctly. InputString = 'hello' N = numel(InputS...
How to output random number each time a for loop repeats?
You can use an extra variable to keep track of the letters that were guessed correctly. InputString = 'hello' N = numel(InputS...
7 years ago | 0
| accepted
Answered
a question on for loop statement
This is filtering. T=10; % smaller example k=0.1; u=rand(T,1); % your loop -> a a = zeros(T,1); a(1) =u(1)+ k*0.01; ...
a question on for loop statement
This is filtering. T=10; % smaller example k=0.1; u=rand(T,1); % your loop -> a a = zeros(T,1); a(1) =u(1)+ k*0.01; ...
7 years ago | 3
Answered
Select random data from a matrix and replace it
Here is another, indexing, approach: A = randi(2, 6, 8)-1 % random 0/1 array M = 3 % max number of 1's per column szA = s...
Select random data from a matrix and replace it
Here is another, indexing, approach: A = randi(2, 6, 8)-1 % random 0/1 array M = 3 % max number of 1's per column szA = s...
7 years ago | 1
Answered
Create a Cell Array of Vectors populated with ones
repmat also works for cell arrays C = repmat({nan(1, 200)}, 10, 3)
Create a Cell Array of Vectors populated with ones
repmat also works for cell arrays C = repmat({nan(1, 200)}, 10, 3)
7 years ago | 1
| accepted
Answered
filling a matrix with a loop
% clever indexing trick A= [1 1 0 1] N = 10 ; % smaller example! 400 in your case X = triu(toeplitz(1:N)) ; X(X > numel(A)) ...
filling a matrix with a loop
% clever indexing trick A= [1 1 0 1] N = 10 ; % smaller example! 400 in your case X = triu(toeplitz(1:N)) ; X(X > numel(A)) ...
7 years ago | 0
Submitted
PERMPOS
all possible ordered permutations of M values in N positions
7 years ago | 3668 downloads |
