Answered

Show free variables in solution(s) instead of zeros

A numeric matrix in MATLAB cannot hold an "x". You could change them to NaN: % Your solution M = [0, 0, 90.0, 0, 0, 0; ...

Show free variables in solution(s) instead of zeros

A numeric matrix in MATLAB cannot hold an "x". You could change them to NaN: % Your solution M = [0, 0, 90.0, 0, 0, 0; ...

environ un mois ago | 0

Answered

Predictions Logistic Regression model using fitglm

I have a couple of comments, before answering your specific questions. First, you might benefit by reading up a little bit on g...

Predictions Logistic Regression model using fitglm

I have a couple of comments, before answering your specific questions. First, you might benefit by reading up a little bit on g...

environ un mois ago | 1

| accepted

Answered

Turning a char element in a double array

a = char('[21,12,43,1]'); array_convert = str2num(a)

Turning a char element in a double array

a = char('[21,12,43,1]'); array_convert = str2num(a)

environ un mois ago | 0

Answered

How to replace only one instance in a certain string

If you are certain that the first e is the first character of the string, then this will do it: x = 'e-8.5e-5' y = regexprep(x...

How to replace only one instance in a certain string

If you are certain that the first e is the first character of the string, then this will do it: x = 'e-8.5e-5' y = regexprep(x...

environ un mois ago | 0

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Answered

read data of 3 dimensional matrix

% Some pretend data data = rand(129, 135, 365); % Max along 3rd dimension max3 = max(data,[],3); % Display size of max3 ...

read data of 3 dimensional matrix

% Some pretend data data = rand(129, 135, 365); % Max along 3rd dimension max3 = max(data,[],3); % Display size of max3 ...

environ un mois ago | 0

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Answered

Is there any more efficient way to split a table than this

% Set random seed for reproducibility rng default % Make up a table with pretend data N = 30; x = rand(N,1); solar = 200*...

Is there any more efficient way to split a table than this

% Set random seed for reproducibility rng default % Make up a table with pretend data N = 30; x = rand(N,1); solar = 200*...

environ un mois ago | 0

| accepted

Answered

Plotting y1 and y2 versus time in the same graph with same axis level but both in the same side and different y axis name.

Not sure what you mean about "mentioning both speeds in y axis". A more conventional method would be to use a legned. Does this ...

Plotting y1 and y2 versus time in the same graph with same axis level but both in the same side and different y axis name.

Not sure what you mean about "mentioning both speeds in y axis". A more conventional method would be to use a legned. Does this ...

environ un mois ago | 1

Answered

How to create animation of multiple of frames using for loop ?

I believe you can do what you want by using the getframe and movie functions.

How to create animation of multiple of frames using for loop ?

I believe you can do what you want by using the getframe and movie functions.

environ un mois ago | 0

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Answered

Remake this without a loop

% Pretend data A = 1 : 7; vector = [2 3 5]; % Replace values of A with 0, if they are in vector A(ismember(A,vector)) = 0

Remake this without a loop

% Pretend data A = 1 : 7; vector = [2 3 5]; % Replace values of A with 0, if they are in vector A(ismember(A,vector)) = 0

environ un mois ago | 1

| accepted

Answered

I have been working on this code. But it's kept showing me this error. Please help me

How are you trying to run that code? If you just try to run those lines from the Command Window, it will give that error. The r...

I have been working on this code. But it's kept showing me this error. Please help me

How are you trying to run that code? If you just try to run those lines from the Command Window, it will give that error. The r...

environ un mois ago | 0

Answered

Get next business day without taking into account holidays and saturdays

The issue is not a problem with busdate(), but with your understanding of the input. 20170610 is being interpreted as a serial d...

Get next business day without taking into account holidays and saturdays

The issue is not a problem with busdate(), but with your understanding of the input. 20170610 is being interpreted as a serial d...

environ un mois ago | 1

| accepted

Answered

Using a GLM model to predict the response factor from a fixed factor

I'm very confused about how you have coded the model. Specifically, The first input to fitglm should be the predictor variable,...

Using a GLM model to predict the response factor from a fixed factor

I'm very confused about how you have coded the model. Specifically, The first input to fitglm should be the predictor variable,...

environ 2 mois ago | 0

| accepted

Answered

Turning an entire script into a function

Put this code into a file named battleship.m function [] = battleship() clear all close all clc rowdim=input('give me...

Turning an entire script into a function

Put this code into a file named battleship.m function [] = battleship() clear all close all clc rowdim=input('give me...

environ 2 mois ago | 0

Answered

kstest for uniform distribution

From the documentation: "The one-sample Kolmogorov-Smirnov test is only valid for continuous cumulative distribution functions."...

kstest for uniform distribution

From the documentation: "The one-sample Kolmogorov-Smirnov test is only valid for continuous cumulative distribution functions."...

environ 2 mois ago | 0

Answered

Using Linear Mixed Models with two fixed factors and a random factor

You can fit such a model using the fitlme function from the Statistics and Machine Learning Toolbox. I think the following code...

Using Linear Mixed Models with two fixed factors and a random factor

You can fit such a model using the fitlme function from the Statistics and Machine Learning Toolbox. I think the following code...

environ 2 mois ago | 1

| accepted

Answered

How to find area under curve

I did not open your text file, but assuming you got that plot using plot(x,y) then it should be as easy as trapz(x,y)

How to find area under curve

I did not open your text file, but assuming you got that plot using plot(x,y) then it should be as easy as trapz(x,y)

environ 2 mois ago | 0

| accepted

Answered

How to bin IDX based on previous IDX value?

Is this what you mean? a = [0 0 1 2 2 1 2 2 1 0 1 0 2]; loc2 = a(2:end)==2; pre = a(1:end-1); b = 1 + find(loc2 & (pre=...

How to bin IDX based on previous IDX value?

Is this what you mean? a = [0 0 1 2 2 1 2 2 1 0 1 0 2]; loc2 = a(2:end)==2; pre = a(1:end-1); b = 1 + find(loc2 & (pre=...

environ 2 mois ago | 0

Answered

how do we make vector the same length ( i get the error: vector must be the same length)

I think you intended elementwise division. See the documentation for array vs. matrix operations. x=linspace(0,100); y=linspac...

how do we make vector the same length ( i get the error: vector must be the same length)

I think you intended elementwise division. See the documentation for array vs. matrix operations. x=linspace(0,100); y=linspac...

environ 2 mois ago | 0

Answered

I have this code in matlab but it does not work alone. I think I need a script for it.

Works for me. Here is an example f = @(x) x.^2 - 1; df = @(x) 2*x; Newton_method(f,df,3,1.e-6,500) function x = Newton_...

I have this code in matlab but it does not work alone. I think I need a script for it.

Works for me. Here is an example f = @(x) x.^2 - 1; df = @(x) 2*x; Newton_method(f,df,3,1.e-6,500) function x = Newton_...

environ 2 mois ago | 0

Answered

How to plot the figure in the while loop ?

Try putting the figure command and the hold on commands before the while loop (and put the figure command before the hold on). ...

How to plot the figure in the while loop ?

Try putting the figure command and the hold on commands before the while loop (and put the figure command before the hold on). ...

environ 2 mois ago | 0

Answered

How to create a matrix using two arrays (x & y) and a formula that uses x & y

Use the meshgrid function to create 2-dimensional grids from the x and y vectors. The first example in the documentation is very...

How to create a matrix using two arrays (x & y) and a formula that uses x & y

Use the meshgrid function to create 2-dimensional grids from the x and y vectors. The first example in the documentation is very...

environ 2 mois ago | 1

Answered

How do I show this matrix in Matlab?

N = 5; % Change this to 50000 for your case a = 3; % The diagonal value b = -1; % The off-diagonal value % Create the matr...

How do I show this matrix in Matlab?

N = 5; % Change this to 50000 for your case a = 3; % The diagonal value b = -1; % The off-diagonal value % Create the matr...

environ 2 mois ago | 0

Answered

Trying to multiply these matrices and getting error "Dimensions of arrays being concatenated are not consistent."

vqs_ is a 1x501 vector. You can't concatenate the scalar vds to it vertically, which is what you are trying to do.

Trying to multiply these matrices and getting error "Dimensions of arrays being concatenated are not consistent."

vqs_ is a 1x501 vector. You can't concatenate the scalar vds to it vertically, which is what you are trying to do.

environ 2 mois ago | 1

Answered

Generate random errors for data with specific covariance matrices

If you have the Statistics and Machine Learning Toolbox, you can generate correlated normal variables with the mvnrnd function.

Generate random errors for data with specific covariance matrices

If you have the Statistics and Machine Learning Toolbox, you can generate correlated normal variables with the mvnrnd function.

environ 2 mois ago | 0

Answered

how to give title of the legends?

You can use the legend function.

how to give title of the legends?

You can use the legend function.

environ 2 mois ago | 0

| accepted

Answered

How to create matrix with Standard deviation from every 5 columns of another matrix?

Here is one way: % Pretend data [Use your actual data instead] M = randn(100,20); % Reshape into the slices needed for stan...

How to create matrix with Standard deviation from every 5 columns of another matrix?

Here is one way: % Pretend data [Use your actual data instead] M = randn(100,20); % Reshape into the slices needed for stan...

environ 2 mois ago | 0

| accepted

Answered

Using Histogram to create a figure with multiple data sets

One possibility would be to use histcounts to get the bin counts (instead of histogram to plot the bins directly), and then a st...

Using Histogram to create a figure with multiple data sets

One possibility would be to use histcounts to get the bin counts (instead of histogram to plot the bins directly), and then a st...

environ 2 mois ago | 0

Answered

How to update array inside a database

I don't fully know the answer, but here are a couple thoughts. I highly doubt you need to explore JDBC. If ODBC works for fetch...

How to update array inside a database

I don't fully know the answer, but here are a couple thoughts. I highly doubt you need to explore JDBC. If ODBC works for fetch...

2 mois ago | 0

Answered

Cost matrix from an array without for loop.

You can use implicit expansion to subtract the two vector from each other, by transposing one of them. cost = abs(domain-domain...

Cost matrix from an array without for loop.

You can use implicit expansion to subtract the two vector from each other, by transposing one of them. cost = abs(domain-domain...

2 mois ago | 1

| accepted

Answered

Is there a way to avoid this inaccuracy when converting an string to a double and then to an unsigned int? I have tried using str2num() but get the same result.Thanks!

The reason for this is that MATLAB uses double-precision arithmetic by default, which will typically give approximately 15 decim...

Is there a way to avoid this inaccuracy when converting an string to a double and then to an unsigned int? I have tried using str2num() but get the same result.Thanks!

The reason for this is that MATLAB uses double-precision arithmetic by default, which will typically give approximately 15 decim...

2 mois ago | 0