Answered

How to get drive name?

On Windows this function works with my local drives >> DriveName( 'C' ) ans = 'OSDisk' >> DriveName( 'D' ) ans = '...

How to get drive name?

On Windows this function works with my local drives >> DriveName( 'C' ) ans = 'OSDisk' >> DriveName( 'D' ) ans = '...

20 days ago | 1

| accepted

Answered

Getting error about index in for loop

Three problems: replace 0:size(dataN) by 1:size(dataN,2). Matlab's indexing is one-based. avg = mean(val); overwrites avg in e...

Getting error about index in for loop

Three problems: replace 0:size(dataN) by 1:size(dataN,2). Matlab's indexing is one-based. avg = mean(val); overwrites avg in e...

23 days ago | 0

Answered

Optimizing code run time

Try to replace M = load(fullfile(path,'M.mat')); by persistent M if isempty(M) M = load(fullfile(path,'M.mat')); end ...

Optimizing code run time

Try to replace M = load(fullfile(path,'M.mat')); by persistent M if isempty(M) M = load(fullfile(path,'M.mat')); end ...

23 days ago | 0

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Answered

How to Keep Nested For Loop Indexes From Equaling Each Other

for ii=1:50 for jj=1:50 if not(jj==ii) code end end end See i, Imaginary unit

How to Keep Nested For Loop Indexes From Equaling Each Other

for ii=1:50 for jj=1:50 if not(jj==ii) code end end end See i, Imaginary unit

23 days ago | 0

Answered

How can i store data in a cell array with single row and few number of columns?

Pre-allocate ACC before the for-loop ACC = cell( 1, 20 ); replace all ACC{a,1} by ACC{a}

How can i store data in a cell array with single row and few number of columns?

Pre-allocate ACC before the for-loop ACC = cell( 1, 20 ); replace all ACC{a,1} by ACC{a}

26 days ago | 0

Answered

New class object every iteration

In most cases it's better to create an array of objects. The documentations provides one way. See Construct Object Arrays. Wha...

New class object every iteration

In most cases it's better to create an array of objects. The documentations provides one way. See Construct Object Arrays. Wha...

26 days ago | 0

| accepted

Answered

My home tab and command line are missing in MATLAB 2019b

Your screen shows an undocked Matlab Editor - I think. Notice the icon in the upper left corner here is a screen clip from an...

My home tab and command line are missing in MATLAB 2019b

Your screen shows an undocked Matlab Editor - I think. Notice the icon in the upper left corner here is a screen clip from an...

26 days ago | 0

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Answered

How to access a row elements of a field of a structure

Assumption: "three rows and 10 columns" refers to a 3x10 double matrix Try %% A.f1 = randi( [0,9], 3, 8 ); % sample dat...

How to access a row elements of a field of a structure

Assumption: "three rows and 10 columns" refers to a 3x10 double matrix Try %% A.f1 = randi( [0,9], 3, 8 ); % sample dat...

27 days ago | 0

Answered

How can I define a class constant based on an abstract constant?

Doesn't this meet your requirements? The property, data, doesn't need Abstract=true and it would force you to define data in al...

How can I define a class constant based on an abstract constant?

Doesn't this meet your requirements? The property, data, doesn't need Abstract=true and it would force you to define data in al...

29 days ago | 0

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Answered

BUG in nargin < 3

The example works as expected for me. It throws an error because no value is assigned to y >> y = myfunction( 1, 2, true ) Out...

BUG in nargin < 3

The example works as expected for me. It throws an error because no value is assigned to y >> y = myfunction( 1, 2, true ) Out...

30 days ago | 1

| accepted

Answered

Column indexing with condition

Try this >> isn = any( A<0, 1 ); >> B(:,isn) = -B(:,isn) B = 1 -2 -3 4 -5 -6 7 -8 -9 and...

Column indexing with condition

Try this >> isn = any( A<0, 1 ); >> B(:,isn) = -B(:,isn) B = 1 -2 -3 4 -5 -6 7 -8 -9 and...

1 month ago | 0

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Answered

How can I count the number of times a specific value appears within a range in a 1D vector?

If x is a vector of whole numbers sum( double( x(151:end)==1 ) ) else sum( double( abs(x(151:end)-1) < small_number ) )

How can I count the number of times a specific value appears within a range in a 1D vector?

If x is a vector of whole numbers sum( double( x(151:end)==1 ) ) else sum( double( abs(x(151:end)-1) < small_number ) )

1 month ago | 0

Answered

Why can't I convert from datenum to datetime?

The datetime statement is ok. >> d_times=datetime( now, 'ConvertFrom', 'datenum'); >> d_times d_times = datetime 27-A...

Why can't I convert from datenum to datetime?

The datetime statement is ok. >> d_times=datetime( now, 'ConvertFrom', 'datenum'); >> d_times d_times = datetime 27-A...

1 month ago | 0

Answered

ERROR while running value function iteration code: Index in position 2 exceeds array bounds (must not exceed 2).

Before trying to fix the problems see: Debug a MATLAB Program Then start by reading the code carefully. The first thing that ca...

ERROR while running value function iteration code: Index in position 2 exceeds array bounds (must not exceed 2).

Before trying to fix the problems see: Debug a MATLAB Program Then start by reading the code carefully. The first thing that ca...

1 month ago | 0

Answered

Inputing textfile data as meaningful variables

Matlab provides several different functions to read text files. (I'm used to textscan.) "cell array of all values in that first...

Inputing textfile data as meaningful variables

Matlab provides several different functions to read text files. (I'm used to textscan.) "cell array of all values in that first...

1 month ago | 1

| accepted

Answered

How to load Excel .xlsx and .mat files into Matlab?

The function, load(), cannot read excel-files. "when I use "load FileName" I get an error" FileName is that the name of a mat-...

How to load Excel .xlsx and .mat files into Matlab?

The function, load(), cannot read excel-files. "when I use "load FileName" I get an error" FileName is that the name of a mat-...

1 month ago | 0

| accepted

Answered

how to call a nested function from a method

"how nested functions in Methods behave" the same way as in functions "call the "child" function from a different script" the...

how to call a nested function from a method

"how nested functions in Methods behave" the same way as in functions "call the "child" function from a different script" the...

1 month ago | 0

| accepted

Answered

Function that calls functions

Caveat: I'm guessing. Replace nfin=2*(Integral_Numerical_1_potential(R(1:4),3,a,b)+Integral_Numerical_2(R(4:end),M-3,a,b))/(1...

Function that calls functions

Caveat: I'm guessing. Replace nfin=2*(Integral_Numerical_1_potential(R(1:4),3,a,b)+Integral_Numerical_2(R(4:end),M-3,a,b))/(1...

1 month ago | 0

| accepted

Answered

Using reshape to manipulate a large matrix

"I dont know how to scale down the matrix by any factor other than 2" What's wrong with your code? I think your code works jus...

Using reshape to manipulate a large matrix

"I dont know how to scale down the matrix by any factor other than 2" What's wrong with your code? I think your code works jus...

1 month ago | 0

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Answered

How do you continue a string on the next line in Psychtoolbox?

The strings, 'center', 'center', are they really intended to be part of the second input argument of DrawFormattedText() ? I g...

How do you continue a string on the next line in Psychtoolbox?

The strings, 'center', 'center', are they really intended to be part of the second input argument of DrawFormattedText() ? I g...

1 month ago | 0

| accepted

Answered

Invalid default value for property error in class properties

In the properties block one must refer to a as MyClass.a when Constant. >> mc = MyClass mc = MyClass with properties: ...

Invalid default value for property error in class properties

In the properties block one must refer to a as MyClass.a when Constant. >> mc = MyClass mc = MyClass with properties: ...

1 month ago | 0

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Answered

NetCDF File Assign Variable Loop from Array

Partial answer. Replace ? = ncread('../data/isff_20070403_20.nc',fNameu); by assign( txt, ncread('../data/isff_20070403_20.nc...

NetCDF File Assign Variable Loop from Array

Partial answer. Replace ? = ncread('../data/isff_20070403_20.nc',fNameu); by assign( txt, ncread('../data/isff_20070403_20.nc...

1 month ago | 0

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Answered

How do I convert a string to date time?

I found this example in the documentation of datetime Specify the current date and time in the time zone represented by Seoul, ...

How do I convert a string to date time?

I found this example in the documentation of datetime Specify the current date and time in the time zone represented by Seoul, ...

1 month ago | 0

Answered

How can I extract a single value from every 86 lines of a long text file?

Try this %% Read all lines as text fid = fopen( 'fort18000.txt' ); cac = textscan( fid, '%s', 'Delimiter','\n' ); [~] = fclo...

How can I extract a single value from every 86 lines of a long text file?

Try this %% Read all lines as text fid = fopen( 'fort18000.txt' ); cac = textscan( fid, '%s', 'Delimiter','\n' ); [~] = fclo...

1 month ago | 0

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Answered

how to extract a specific data from struct formatted dataset

Try this %% z = load('B0005.mat'); len = length(z.B0005.cycle); a = zeros( len, 1 ); for ii = 1:len if strcmp( z.B00...

how to extract a specific data from struct formatted dataset

Try this %% z = load('B0005.mat'); len = length(z.B0005.cycle); a = zeros( len, 1 ); for ii = 1:len if strcmp( z.B00...

1 month ago | 0

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Answered

Matlab does not save the variable in each loop

you need to pre-allocate Tout, something like N = appropriate value Tout = cell(1,N); before assigning values

Matlab does not save the variable in each loop

you need to pre-allocate Tout, something like N = appropriate value Tout = cell(1,N); before assigning values

1 month ago | 1

| accepted

Answered

This code is not working, it return an issue stating with vector length, please help out

The size of the variables, x2 and w, must be the same. They are not. >> whos x1 v x2 w Name Size Bytes Cla...

This code is not working, it return an issue stating with vector length, please help out

The size of the variables, x2 and w, must be the same. They are not. >> whos x1 v x2 w Name Size Bytes Cla...

1 month ago | 0

Answered

How can I find x values given a FOR command?

Replace find (x) = 0:5:55 by x(1:round(5/dt):end,:) This should work since 5/dt is a whole number. round takes care of a po...

How can I find x values given a FOR command?

Replace find (x) = 0:5:55 by x(1:round(5/dt):end,:) This should work since 5/dt is a whole number. round takes care of a po...

1 month ago | 1

| accepted

Answered

Saving and opening Matlab file

"Except the plot dosen't show" Matlab doesn't recognise it as Matlab code. The extension, .mat, indicates data. See Save and...

Saving and opening Matlab file

"Except the plot dosen't show" Matlab doesn't recognise it as Matlab code. The extension, .mat, indicates data. See Save and...

2 months ago | 0

| accepted

Answered

Search through every vector in cell array for the vector that contains a certain value

Try this %% nodey = {[1,2],[3,4]}; %% has_one = false(1,length(nodey)); for ii = 1:length(nodey) has_one(ii) = ismembe...

Search through every vector in cell array for the vector that contains a certain value

Try this %% nodey = {[1,2],[3,4]}; %% has_one = false(1,length(nodey)); for ii = 1:length(nodey) has_one(ii) = ismembe...

2 months ago | 0

| accepted