Answered

filter cell array with strings

Try to work with tables, they're more versatile. Also check groupfilter for more advanced filtering schemes. tab = array2table(...

filter cell array with strings

Try to work with tables, they're more versatile. Also check groupfilter for more advanced filtering schemes. tab = array2table(...

2 years ago | 0

| accepted

Answered

Merging rows of a matrix into a number

See here https://mathworks.com/matlabcentral/answers/299422-converting-a-double-into-a-matrix-of-its-digits#answer_231586 C = [...

Merging rows of a matrix into a number

See here https://mathworks.com/matlabcentral/answers/299422-converting-a-double-into-a-matrix-of-its-digits#answer_231586 C = [...

2 years ago | 1

| accepted

Answered

Ignore missing data in a table group

As Johan also suggested you may use omitnant flag. Also, consider using groupsummary and groupfilter : m = groupsummary(T, 'C',...

Ignore missing data in a table group

As Johan also suggested you may use omitnant flag. Also, consider using groupsummary and groupfilter : m = groupsummary(T, 'C',...

2 years ago | 0

| accepted

Answered

how to search specific data from matlab to excel

tab = readtable('myExcel.xlsx'); % see doc for more options tab(ismember(tab.(1), 'R1280XS'), :) % the row at which the input...

how to search specific data from matlab to excel

tab = readtable('myExcel.xlsx'); % see doc for more options tab(ismember(tab.(1), 'R1280XS'), :) % the row at which the input...

2 years ago | 1

| accepted

Answered

Check for coordinate pairs matches in .mat file

Assuming both x and y are vectors of same length, this might work: x = randi([0 5], 10, 1); y = randi([0 5], 10, 1); myPair...

Check for coordinate pairs matches in .mat file

Assuming both x and y are vectors of same length, this might work: x = randi([0 5], 10, 1); y = randi([0 5], 10, 1); myPair...

2 years ago | 0

Answered

How can I create an array from the past values in a loop?

something like this? n = 10; str = strings(n, 1); for i = 1:n % do whatever str(i, 1) = gimmeMystr; end

How can I create an array from the past values in a loop?

something like this? n = 10; str = strings(n, 1); for i = 1:n % do whatever str(i, 1) = gimmeMystr; end

2 years ago | 0

Answered

Plot the slope of a parabola with only the data points being known

Before fitting, it's a good practice to visualize your data to better understand the rough relationship between your variables. ...

Plot the slope of a parabola with only the data points being known

Before fitting, it's a good practice to visualize your data to better understand the rough relationship between your variables. ...

2 years ago | 1

Answered

How to plot a function with summation and multiple variables?

Start by understanding MATLAB a bit better. For the time being this may help you: myfnc = @(A, s, t, i, T0, tau) sum(A.*s.*(t -...

How to plot a function with summation and multiple variables?

Start by understanding MATLAB a bit better. For the time being this may help you: myfnc = @(A, s, t, i, T0, tau) sum(A.*s.*(t -...

2 years ago | 0

Answered

Handle error from input

AFIK input doesn't let you control the error behavior. The better approach would be to return it as a string, and validate it: ...

Handle error from input

AFIK input doesn't let you control the error behavior. The better approach would be to return it as a string, and validate it: ...

2 years ago | 0

Answered

fileDatastore using for loop and scatter

You are not even reading your csv files; you just read the same file file4.csv over and over! Try this: fds = fileDatastore('*....

fileDatastore using for loop and scatter

You are not even reading your csv files; you just read the same file file4.csv over and over! Try this: fds = fileDatastore('*....

2 years ago | 1

Answered

mean from intersection matrix

This should work: a = [1,3,3,2,2,3,3,4,3,1,3]; b = [1,1,1,3,4,1,2,1,4,1,1]; c = [2,2,2,4,2,3,3,2,1,3,8]; x = [a; b]; [~, ...

mean from intersection matrix

This should work: a = [1,3,3,2,2,3,3,4,3,1,3]; b = [1,1,1,3,4,1,2,1,4,1,1]; c = [2,2,2,4,2,3,3,2,1,3,8]; x = [a; b]; [~, ...

2 years ago | 0

| accepted

Answered

Read from and make new based on positions

Why not this? G = [0 115 0 0 0 0 0 0 0 0 111 0 0 0 0 110 0 0 0 110 0 0 0 0 82 0 0 0 0 111 0 0 0 111 0 0 0 0 0 0 0 0 0 87 114...

Read from and make new based on positions

Why not this? G = [0 115 0 0 0 0 0 0 0 0 111 0 0 0 0 110 0 0 0 110 0 0 0 0 82 0 0 0 0 111 0 0 0 111 0 0 0 0 0 0 0 0 0 87 114...

2 years ago | 1

| accepted

Answered

Bar plot error when plotting

The main problem is that your tick labels are too long to fit under the axes. You can try something like this: figure('Name', '...

Bar plot error when plotting

The main problem is that your tick labels are too long to fit under the axes. You can try something like this: figure('Name', '...

2 years ago | 0

| accepted

Answered

Open .m files in current MATLAB instance from Windows Powershell

Try this function addME(a, b) fprintf("sum a + b equals %.2g\n", a + b) end Then from powershell (assuming your PS insta...

Open .m files in current MATLAB instance from Windows Powershell

Try this function addME(a, b) fprintf("sum a + b equals %.2g\n", a + b) end Then from powershell (assuming your PS insta...

2 years ago | 0

Answered

What equivalent MATLAB commands plots PDF of data like 'hist' command plots histogram of data.

Something like this should work: data = normrnd(10,1,100,1); pd = fitdist(data, 'Normal'); x_values = 5:0.1:15; y_values = p...

What equivalent MATLAB commands plots PDF of data like 'hist' command plots histogram of data.

Something like this should work: data = normrnd(10,1,100,1); pd = fitdist(data, 'Normal'); x_values = 5:0.1:15; y_values = p...

2 years ago | 0

Answered

scatter plot data that meet a condition

% some random values A = randi([0, 100], 8, 2000); F = randi([0 1], 8, 2000); F = logical(F); % convert your flag to logical ...

scatter plot data that meet a condition

% some random values A = randi([0, 100], 8, 2000); F = randi([0 1], 8, 2000); F = logical(F); % convert your flag to logical ...

2 years ago | 1

| accepted

Answered

How to calculate for significant difference between Cohen's Kappa values?

You can build confidence intervals around your Kappa values, and then see if they overlap.

How to calculate for significant difference between Cohen's Kappa values?

You can build confidence intervals around your Kappa values, and then see if they overlap.

2 years ago | 0

Answered

How to know which distribution is BCa method form bootci assuming my data follows

To my understanding BCa tries to correct for bias and skewness (acceleration, calculated from jackknife sampling) in the distrib...

How to know which distribution is BCa method form bootci assuming my data follows

To my understanding BCa tries to correct for bias and skewness (acceleration, calculated from jackknife sampling) in the distrib...

2 years ago | 1

Answered

Is there a way to turn off the scale over the graph

h = gca; h.Box = 'on'; h.XAxis.TickLength = [0 0];

Is there a way to turn off the scale over the graph

h = gca; h.Box = 'on'; h.XAxis.TickLength = [0 0];

2 years ago | 0

| accepted

Answered

Standard Error for bivariable zscore normalized regression

And why is it surprising to you? You can read about how coefficients and their SE are calculated in linear regression. Standard...

Standard Error for bivariable zscore normalized regression

And why is it surprising to you? You can read about how coefficients and their SE are calculated in linear regression. Standard...

2 years ago | 0

Answered

I have a table where each entry is a word/sentence. How do I count how many times a word shows up?

Check out groupsummary: gender = {'male', 'female', 'male', 'male'}.'; dogorcat = {'dog', 'cat', 'dog', 'dog'}.'; T = table(g...

I have a table where each entry is a word/sentence. How do I count how many times a word shows up?

Check out groupsummary: gender = {'male', 'female', 'male', 'male'}.'; dogorcat = {'dog', 'cat', 'dog', 'dog'}.'; T = table(g...

2 years ago | 1

Answered

How can i change the linestyle in the parcorr function?

This should work: [~, ~, ~, h] = parcorr(randn(1000, 1)); set(gca,'YTick',[-0.3 0 0.5 1 ]) title('PACF Offshore') ylabel('pa...

How can i change the linestyle in the parcorr function?

This should work: [~, ~, ~, h] = parcorr(randn(1000, 1)); set(gca,'YTick',[-0.3 0 0.5 1 ]) title('PACF Offshore') ylabel('pa...

2 years ago | 1

| accepted

Answered

stepwiselm() function is not taking the last column of table as Response variable

The issue stems from variable Timestamp, which is of class datetime. You need to first convert it to numeric type: data = readt...

stepwiselm() function is not taking the last column of table as Response variable

The issue stems from variable Timestamp, which is of class datetime. You need to first convert it to numeric type: data = readt...

2 years ago | 1

Answered

Floating bar graphs with characters and numerical data

What about this? tags = ["Al", "Ti", "Nb", "Co", "Mo"]; ranges = [0.01 0.58; 0.76 1.95; 5 5.61; 0 1; 2.63 3.11]; h = gca; h....

Floating bar graphs with characters and numerical data

What about this? tags = ["Al", "Ti", "Nb", "Co", "Mo"]; ranges = [0.01 0.58; 0.76 1.95; 5 5.61; 0 1; 2.63 3.11]; h = gca; h....

2 years ago | 0

| accepted

Answered

How to compute the correlation between two metrices of same dimenstion (correlation between a column of a matrix to corresponding column of other matrix)?

A = rand(10, 3); B = rand(10, 3); R = diag(corr(A, B))

How to compute the correlation between two metrices of same dimenstion (correlation between a column of a matrix to corresponding column of other matrix)?

A = rand(10, 3); B = rand(10, 3); R = diag(corr(A, B))

2 years ago | 0

| accepted

Answered

Counting number of words and their characters

Maybe this help txt = ["Why MATLAB doesn't offer much for data science?"; "Python and R beat MATLAB in ML"]; voc = tokenizedDo...

Counting number of words and their characters

Maybe this help txt = ["Why MATLAB doesn't offer much for data science?"; "Python and R beat MATLAB in ML"]; voc = tokenizedDo...

2 years ago | 0

Answered

How to combine multiple sheet in an excel file in to a single sheey

Follow this example: file = "test.xlsx"; % replace your file name names = sheetnames(file); data = table; for i = 1:numel(...

How to combine multiple sheet in an excel file in to a single sheey

Follow this example: file = "test.xlsx"; % replace your file name names = sheetnames(file); data = table; for i = 1:numel(...

2 years ago | 0

| accepted

Answered

Any efficient way to identify a set of 1s in a big array?

Try this a = [1 1 1 -1 0 0 0 0 1 1 -1 0 0 1 1 1 1 -1 0 0]; astart = [1, 9, 14]; astop = [3, 10, 17]; dda = diff([0, 0, dif...

Any efficient way to identify a set of 1s in a big array?

Try this a = [1 1 1 -1 0 0 0 0 1 1 -1 0 0 1 1 1 1 -1 0 0]; astart = [1, 9, 14]; astop = [3, 10, 17]; dda = diff([0, 0, dif...

2 years ago | 0

Answered

I have 45x484 matrix but when I calculate coeff pca function, I am getting coeff with 484x44 matrix which causes errors in biplot. Why is the rows and columns switch places?

Well you should find the answer in your problem not MATLAB pca function. You have 45 observations with 484 variables, so degree ...

I have 45x484 matrix but when I calculate coeff pca function, I am getting coeff with 484x44 matrix which causes errors in biplot. Why is the rows and columns switch places?

Well you should find the answer in your problem not MATLAB pca function. You have 45 observations with 484 variables, so degree ...

2 years ago | 1

| accepted