Answered

Output argument <Variable> (and maybe others) not assigned during call to <Function>.

The cv variable is only created iff nargout is 2. With 3 outputs, indeed cv will not exist. Change if nargout == 2 to if nar...

Output argument <Variable> (and maybe others) not assigned during call to <Function>.

The cv variable is only created iff nargout is 2. With 3 outputs, indeed cv will not exist. Change if nargout == 2 to if nar...

2 hours ago | 0

| accepted

Answered

Hi, I am modeling blood flow, and first I need to create structural rectangular mesh of points, so in the next step I could find the value of pressure, velocity etc. in every each point. Do you please know, how to create this mesh? Thank you

Your description is not clear, and there's no point giving us code that doesn't work. It sounds like you're looking for meshgri...

Hi, I am modeling blood flow, and first I need to create structural rectangular mesh of points, so in the next step I could find the value of pressure, velocity etc. in every each point. Do you please know, how to create this mesh? Thank you

Your description is not clear, and there's no point giving us code that doesn't work. It sounds like you're looking for meshgri...

7 hours ago | 0

| accepted

Answered

Need help with deleting rows in my table

Why are you reading the data as arrays, converting to table, then converting back to array. Choose one type and stick to it rath...

Need help with deleting rows in my table

Why are you reading the data as arrays, converting to table, then converting back to array. Choose one type and stick to it rath...

1 day ago | 1

| accepted

Answered

create a function that takes a vector as an input parameter and returns another vector where each component is the initial vector repeated n times.

"Output argument "B" (and maybe others) not assigned during call to "cyclic_shift_recursion" Well, yes matlab is correct. Your ...

create a function that takes a vector as an input parameter and returns another vector where each component is the initial vector repeated n times.

"Output argument "B" (and maybe others) not assigned during call to "cyclic_shift_recursion" Well, yes matlab is correct. Your ...

2 days ago | 1

| accepted

Answered

Just how random are random numbers in MATLAB?

"Every single time so far there has been a number 19,950+ within 10 generations or sometimes far less." You will have to expla...

Just how random are random numbers in MATLAB?

"Every single time so far there has been a number 19,950+ within 10 generations or sometimes far less." You will have to expla...

2 days ago | 1

Answered

Add cell value from a matrix row based on corresponding index to another matrix row

If you want to keep using numeric matrices: [~, whereinA] = ismember(B(:, [2 4 6]), A(:, 1)) C = reshape([reshape(B.', 2, []);...

Add cell value from a matrix row based on corresponding index to another matrix row

If you want to keep using numeric matrices: [~, whereinA] = ismember(B(:, [2 4 6]), A(:, 1)) C = reshape([reshape(B.', 2, []);...

2 days ago | 1

| accepted

Answered

How to convert a char into datetime variable?

datetime('11:04:55') Note that it will use the current date for the date part (since a datetime is always date + time as the na...

How to convert a char into datetime variable?

datetime('11:04:55') Note that it will use the current date for the date part (since a datetime is always date + time as the na...

2 days ago | 1

| accepted

Answered

How to initialize object array with different parameters?

With the current interface, this is probably the best you can do: dim = [3,2]; param = 1:6; param = num2cell(param); %each...

How to initialize object array with different parameters?

With the current interface, this is probably the best you can do: dim = [3,2]; param = 1:6; param = num2cell(param); %each...

2 days ago | 1

| accepted

Answered

What is the type of function Handle and How is it stored in memory?

Firstly, you seem to be using the term file handle for what everybody else call function handles. File handles are completely di...

What is the type of function Handle and How is it stored in memory?

Firstly, you seem to be using the term file handle for what everybody else call function handles. File handles are completely di...

2 days ago | 1

Answered

How to concentrate 5000 matrices of different row length (same column length) into one matrix by unfolding each of the matrices to the smallest row length

Where are the 5000 matrices in your code? As far as I can tell you've only got 6 matrices stored in the matrix field of the stru...

How to concentrate 5000 matrices of different row length (same column length) into one matrix by unfolding each of the matrices to the smallest row length

Where are the 5000 matrices in your code? As far as I can tell you've only got 6 matrices stored in the matrix field of the stru...

3 days ago | 1

| accepted

Answered

Detection of red color RGB

%extracting the Red color from grayscale image diff_im=imsubtract(data(:,:,1),rgb2gray(data)); That comment is very misleading...

Detection of red color RGB

%extracting the Red color from grayscale image diff_im=imsubtract(data(:,:,1),rgb2gray(data)); That comment is very misleading...

3 days ago | 0

Answered

Finding index values for consecutive values in cell array

Right, so your data is a 105x1 vector cell array of 3x3x2000 matrices. First, a function to get the average length of the sequ...

Finding index values for consecutive values in cell array

Right, so your data is a 105x1 vector cell array of 3x3x2000 matrices. First, a function to get the average length of the sequ...

3 days ago | 0

| accepted

Answered

Write video in wide screen format

Matlab assumes and always display the video with a pixel aspect ratio of 1:1. My guess is that your original video specify a di...

Write video in wide screen format

Matlab assumes and always display the video with a pixel aspect ratio of 1:1. My guess is that your original video specify a di...

3 days ago | 0

| accepted

Answered

Can I load .NET Core 2.2 DLL to Matlab on Linux?

While in theory you can use .Net core on linux (with mono), Matlab is very specific that its .Net interface only works on Window...

Can I load .NET Core 2.2 DLL to Matlab on Linux?

While in theory you can use .Net core on linux (with mono), Matlab is very specific that its .Net interface only works on Window...

3 days ago | 0

Answered

Error: Not enough input arguments

They can't be inputs of phi because I need to zero the function phi with fsolve. Yes, they can: function F=phi(P, Tc, Pc, T, o...

Error: Not enough input arguments

They can't be inputs of phi because I need to zero the function phi with fsolve. Yes, they can: function F=phi(P, Tc, Pc, T, o...

4 days ago | 0

| accepted

Answered

How do I fill lines between 2 values with interpolation

Probably, the easiest: startvalue = 1; endvalue = 10; numberofpoints = 19; %includes start and end point x = linspace(startv...

How do I fill lines between 2 values with interpolation

Probably, the easiest: startvalue = 1; endvalue = 10; numberofpoints = 19; %includes start and end point x = linspace(startv...

4 days ago | 0

| accepted

Answered

Do I need pre-allocation ?

Robin, in the 2nd case, yes you were attempting to preallocate the array. However, the array you preallocated is not the same ar...

Do I need pre-allocation ?

Robin, in the 2nd case, yes you were attempting to preallocate the array. However, the array you preallocated is not the same ar...

4 days ago | 2

| accepted

Answered

How can I rearrange the order of N matrix in Matlab?

Read Stephen's comment and follow the links to understand why your original design is very flawed. You want only one variable c...

How can I rearrange the order of N matrix in Matlab?

Read Stephen's comment and follow the links to understand why your original design is very flawed. You want only one variable c...

4 days ago | 0

Answered

Displaying empty array as output

Hopefully, your real code doesn't use the same indentation as what you've posted above. If it does, I suggest that you let matla...

Displaying empty array as output

Hopefully, your real code doesn't use the same indentation as what you've posted above. If it does, I suggest that you let matla...

4 days ago | 0

Answered

Choice of Database for smooth data import into Matlab

While excel can be used as a data source, I would hardly call it a database. Particularly, if you compare it to SQL databases. T...

Choice of Database for smooth data import into Matlab

While excel can be used as a data source, I would hardly call it a database. Particularly, if you compare it to SQL databases. T...

4 days ago | 0

| accepted

Answered

splitting data in a table when ever the cell is empty

Matrices can never have empty rows. What you call empty rows are rows with 0s in both columns. If I understood correctly what ...

splitting data in a table when ever the cell is empty

Matrices can never have empty rows. What you call empty rows are rows with 0s in both columns. If I understood correctly what ...

5 days ago | 0

| accepted

Answered

How to align multiple matrices based on the first column values?

The simplest way is convert your matrices to a table, which may make sense anyway considering that it looks like the columns of ...

How to align multiple matrices based on the first column values?

The simplest way is convert your matrices to a table, which may make sense anyway considering that it looks like the columns of ...

5 days ago | 0

| accepted

Answered

Index in position 2 exceeds array bounds (must not exceed 101)

My guess is that you want all the times, in which case: newsst = sst(newlat, newlon, :); Using time as an index into newsst ma...

Index in position 2 exceeds array bounds (must not exceed 101)

My guess is that you want all the times, in which case: newsst = sst(newlat, newlon, :); Using time as an index into newsst ma...

5 days ago | 0

Answered

Find the closest value in each group in a matrix column

Within splitapply, when min is invoked, it's invoked on a single group. Therefore, the index it returns refers to the index of t...

Find the closest value in each group in a matrix column

Within splitapply, when min is invoked, it's invoked on a single group. Therefore, the index it returns refers to the index of t...

5 days ago | 0

| accepted

Answered

Tab completion of struct within cell

The reason why tab completion doesn't work for the content of a cell array can easily be explained: matlab does not look into th...

Tab completion of struct within cell

The reason why tab completion doesn't work for the content of a cell array can easily be explained: matlab does not look into th...

5 days ago | 1

| accepted

Answered

Bypass uigetdir in function

The proper way to go about this is to separate the processing code into a function, completely independent of user input/output....

Bypass uigetdir in function

The proper way to go about this is to separate the processing code into a function, completely independent of user input/output....

5 days ago | 1

| accepted

Answered

"matlab drive" remove space in filename

When you install the connector, you can choose the path of the folder, at least on Windows. I would assume the same is true for ...

"matlab drive" remove space in filename

When you install the connector, you can choose the path of the folder, at least on Windows. I would assume the same is true for ...

5 days ago | 1

Answered

Select groups of data with a specific size

Simply build the histogram of your groups (with histcounts or accumarray) and select the groups you want to keep with ismember: ...

Select groups of data with a specific size

Simply build the histogram of your groups (with histcounts or accumarray) and select the groups you want to keep with ismember: ...

5 days ago | 0

| accepted

Answered

Given an instance of a class (without knowing class name), how to call the constructor?

As Sean said, you may want to inherit from matlab.mixin.Copyable instead of implementing your own cloning interface. However, t...

Given an instance of a class (without knowing class name), how to call the constructor?

As Sean said, you may want to inherit from matlab.mixin.Copyable instead of implementing your own cloning interface. However, t...

5 days ago | 1

Answered

Polyfit function - NaN

polyfit cannot cope with missing data.So, if you want to use polyfit you have but no choice to remove that missing data. If the...

Polyfit function - NaN

polyfit cannot cope with missing data.So, if you want to use polyfit you have but no choice to remove that missing data. If the...

5 days ago | 0