5 518 total contributions since 2014

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Answered

Double Precision is rounding at the 5th digit?

Change the display format., e.g. format long g Although beginners often confuse the two, how data is stored in memory and how ...

Double Precision is rounding at the 5th digit?

Change the display format., e.g. format long g Although beginners often confuse the two, how data is stored in memory and how ...

environ 13 heures ago | 3

| accepted

Answered

two column vector division

"two column vector division" All of your examples use row vectors, not column vectors. "What is a mathematical formula?" See ...

two column vector division

"two column vector division" All of your examples use row vectors, not column vectors. "What is a mathematical formula?" See ...

environ 14 heures ago | 1

Answered

How does the function contains behave ??

The contains function behaves exactly as I would expect, based on its documentation, which states "If pattern is an array contai...

How does the function contains behave ??

The contains function behaves exactly as I would expect, based on its documentation, which states "If pattern is an array contai...

1 jour ago | 0

| accepted

Answered

Adding elements of double arrays inside cell array below another double array inside the same cell array

Concatenating the contents of a cell array is easy using a comma-separated list: >> A1 = cat(1,Sort{1,:}) A1 = 1 2 ...

Adding elements of double arrays inside cell array below another double array inside the same cell array

Concatenating the contents of a cell array is easy using a comma-separated list: >> A1 = cat(1,Sort{1,:}) A1 = 1 2 ...

1 jour ago | 0

Answered

Index exceeds number of array elements?

On each loop iteration the loop iterator variable R_e is scalar (i.e. it has size 1x1). Inside the function you define i=1 and t...

Index exceeds number of array elements?

On each loop iteration the loop iterator variable R_e is scalar (i.e. it has size 1x1). Inside the function you define i=1 and t...

1 jour ago | 0

Answered

Conversion of multidimensional cell into string

Using Guillaume's cell array defined above: >> C(:,2) = cellfun(@(v)char(v+'0'),C(:,2),'uni',0) C = 2 '010' 73 '01...

Conversion of multidimensional cell into string

Using Guillaume's cell array defined above: >> C(:,2) = cellfun(@(v)char(v+'0'),C(:,2),'uni',0) C = 2 '010' 73 '01...

1 jour ago | 1

| accepted

Answered

Load multiple struct 1x1 mat files

It is recommended to load into an output variable, rather than directly into the workspace. doing so also makes your task simple...

Load multiple struct 1x1 mat files

It is recommended to load into an output variable, rather than directly into the workspace. doing so also makes your task simple...

1 jour ago | 0

Answered

A command like "unique" for matrices?

A general solution that does not concatenate the data and works for any size arrays: % Fake data: A = [1;2;3]; B = [1;2;3]; ...

A command like "unique" for matrices?

A general solution that does not concatenate the data and works for any size arrays: % Fake data: A = [1;2;3]; B = [1;2;3]; ...

1 jour ago | 1

| accepted

Answered

How can i seperate a string in all possible smaller ones without using for loops;.

>> a = 'ATGCA'; >> n = 2; >> x = hankel(1:n,n:numel(a)).'; >> b = num2cell(a(x),2) b = 'AT' 'TG' 'GC' 'CA'

How can i seperate a string in all possible smaller ones without using for loops;.

>> a = 'ATGCA'; >> n = 2; >> x = hankel(1:n,n:numel(a)).'; >> b = num2cell(a(x),2) b = 'AT' 'TG' 'GC' 'CA'

2 jours ago | 1

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Answered

Function day not working

''Unable to use a value of type 'datetime' as an index.'" That error message makes it quite clear: you have a variable in the w...

Function day not working

''Unable to use a value of type 'datetime' as an index.'" That error message makes it quite clear: you have a variable in the w...

2 jours ago | 0

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Answered

Convert cell arrays to 4-D array

Where C is your cell array: M = cell2mat(permute(C,[4,3,2,1]))

Convert cell arrays to 4-D array

Where C is your cell array: M = cell2mat(permute(C,[4,3,2,1]))

2 jours ago | 0

Answered

C-order reshape of multi-dimensional array in matlab

This gives exactly the order that you requested in your question: >> M = [1,2,3,4;5,6,7,8;9,10,11,12;13,14,15,16]; >> Z = perm...

C-order reshape of multi-dimensional array in matlab

This gives exactly the order that you requested in your question: >> M = [1,2,3,4;5,6,7,8;9,10,11,12;13,14,15,16]; >> Z = perm...

2 jours ago | 0

Answered

Simultaneous Changing of Values in For Loop.

Usually it is much easier to increment over indices, not data: t0 = 0; t = t0; Iv = 1:1:3; Jv = 2:1:4; for x = 1:numel(Iv)...

Simultaneous Changing of Values in For Loop.

Usually it is much easier to increment over indices, not data: t0 = 0; t = t0; Iv = 1:1:3; Jv = 2:1:4; for x = 1:numel(Iv)...

3 jours ago | 0

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Answered

fprintf command output and extra output

You used the wrong operator. If you want to print to string, use sprintf. "Where is the output=15 coming from..." The fprintf ...

fprintf command output and extra output

You used the wrong operator. If you want to print to string, use sprintf. "Where is the output=15 coming from..." The fprintf ...

3 jours ago | 0

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Answered

how to remove the repetitive elements from a structure

Data: >> a = struct('position', {[200 300 1],[300 200 1],[250 250 0.5],[230 280 0.6],[300 200 1],[270 150 1]}, 'cost', {[50;90]...

how to remove the repetitive elements from a structure

Data: >> a = struct('position', {[200 300 1],[300 200 1],[250 250 0.5],[230 280 0.6],[300 200 1],[270 150 1]}, 'cost', {[50;90]...

4 jours ago | 0

Answered

Help with nested structure

This would be much easier if you had designed your data better. In particular, rather than using nested structures (which are r...

Help with nested structure

This would be much easier if you had designed your data better. In particular, rather than using nested structures (which are r...

5 jours ago | 0

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Answered

While loop with for loop problem

Perhaps you meant something like this: D = [3 0 0; 0 2 0; 0 0 1]; b = [0; 1; 0]; L = [0 0 0; 1 0 0; 0 1 0]; U = [0 1 0; 0 0 ...

While loop with for loop problem

Perhaps you meant something like this: D = [3 0 0; 0 2 0; 0 0 1]; b = [0; 1; 0]; L = [0 0 0; 1 0 0; 0 1 0]; U = [0 1 0; 0 0 ...

5 jours ago | 1

| accepted

Answered

Opening mat files with uiopen and copying data to array

It seems that whoever created those .mat files unfortunately named each structure with the same name as the filename, which just...

Opening mat files with uiopen and copying data to array

It seems that whoever created those .mat files unfortunately named each structure with the same name as the filename, which just...

7 jours ago | 0

| accepted

Answered

TUTORIAL: Why Variables Should Not Be Named Dynamically (eval)

Slow The MATLAB documentation Alternatives to the eval Function explains that code that uses eval is slower because "MATLAB® co...

TUTORIAL: Why Variables Should Not Be Named Dynamically (eval)

Slow The MATLAB documentation Alternatives to the eval Function explains that code that uses eval is slower because "MATLAB® co...

7 jours ago | 7

Answered

How do I extract the same field from diferent struct files with names like AAA_1, AAA_2... AAA_n?

I suspect that ScanImage is badly written and saves variables (e.g. structures) with a different name in each .mat file. This ma...

How do I extract the same field from diferent struct files with names like AAA_1, AAA_2... AAA_n?

I suspect that ScanImage is badly written and saves variables (e.g. structures) with a different name in each .mat file. This ma...

7 jours ago | 1

| accepted

Answered

Average of several (different, across) structures

Fake data in scalar structures: S1 = struct('A',randi(99,4,3,2),'B',randi(99,4,3,2)); S2 = struct('A',randi(99,4,3,2),'B',rand...

Average of several (different, across) structures

Fake data in scalar structures: S1 = struct('A',randi(99,4,3,2),'B',randi(99,4,3,2)); S2 = struct('A',randi(99,4,3,2),'B',rand...

7 jours ago | 0

Answered

Keeping record of Number of concatenated files

Inside your loop: N = ... the total number of files. C = cell(1,N) for k = 1:N M = ... import the matrix here. M(:,...

Keeping record of Number of concatenated files

Inside your loop: N = ... the total number of files. C = cell(1,N) for k = 1:N M = ... import the matrix here. M(:,...

8 jours ago | 0

Answered

How to find out whether there is a repetitive element in the columns of a matrix?

"I just want to know whether there is or not." >> any(diff(sort(a,1),1)==0,1) ans = 1 1 0

How to find out whether there is a repetitive element in the columns of a matrix?

"I just want to know whether there is or not." >> any(diff(sort(a,1),1)==0,1) ans = 1 1 0

8 jours ago | 2

Answered

TUTORIAL: Why Variables Should Not Be Named Dynamically (eval)

Alternative: save the Fields of a Scalar Structure The save command has an option for saving the fields of a scalar structure a...

TUTORIAL: Why Variables Should Not Be Named Dynamically (eval)

Alternative: save the Fields of a Scalar Structure The save command has an option for saving the fields of a scalar structure a...

8 jours ago | 0

Answered

TUTORIAL: Why Variables Should Not Be Named Dynamically (eval)

Alternative: load into a Structure, not into the Workspace In almost all cases where data is imported programmatically (i.e. no...

TUTORIAL: Why Variables Should Not Be Named Dynamically (eval)

Alternative: load into a Structure, not into the Workspace In almost all cases where data is imported programmatically (i.e. no...

8 jours ago | 5

Question

TUTORIAL: Why Variables Should Not Be Named Dynamically (eval)

Sometimes beginners (and some self-taught professors) think it would be a good idea to dynamically create or access variable nam...

8 jours ago | 18 answers | 30

Answered

Finding arrays above threshold value

Fake data: AT(1).AX = rand(1,370); AT(2).AX = rand(1,1007); AT(3).AX = rand(1,3957); AT(4).AX = rand(1,6309); AT(5).AX = ra...

Finding arrays above threshold value

Fake data: AT(1).AX = rand(1,370); AT(2).AX = rand(1,1007); AT(3).AX = rand(1,3957); AT(4).AX = rand(1,6309); AT(5).AX = ra...

9 jours ago | 1

| accepted

Answered

How to Convert a column with Char in Cell matrice to Number?

You almost got it right, you just need to split the numeric array into a cell array so that it can be allocated back to the cell...

How to Convert a column with Char in Cell matrice to Number?

You almost got it right, you just need to split the numeric array into a cell array so that it can be allocated back to the cell...

9 jours ago | 0

Answered

Could anyone help me how to solve the issue.

Using very basic MATLAB indexing: A = {[1,2],[3,4],[7,5,6]}; N = numel(A); Z = nan(1,N); for k = 1:N Z(k) ... your code...

Could anyone help me how to solve the issue.

Using very basic MATLAB indexing: A = {[1,2],[3,4],[7,5,6]}; N = numel(A); Z = nan(1,N); for k = 1:N Z(k) ... your code...

9 jours ago | 0

| accepted