Answered

How do I identify unique rows based on multiple columns and calculate the average of the rest of the columns?

A = [1 4 3 8; 4 5 6 9; 1 6 3 6; 2 6 9 3; 1 5 3 7] I am going to assume that any row that columns 1 and 3 are identical, irregar...

How do I identify unique rows based on multiple columns and calculate the average of the rest of the columns?

A = [1 4 3 8; 4 5 6 9; 1 6 3 6; 2 6 9 3; 1 5 3 7] I am going to assume that any row that columns 1 and 3 are identical, irregar...

3 months ago | 0

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Answered

how to calculate the average?

Lilya, You do not need to create a for loop (see vectorization) I would also suggest using the mean function instead. temp ...

how to calculate the average?

Lilya, You do not need to create a for loop (see vectorization) I would also suggest using the mean function instead. temp ...

3 months ago | 0

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Answered

How to calculate sum area of a particular coordinate?

@mohd akmal masud Sorry for the late reply. I was going through old comments and discovered that I wasn't following this questio...

How to calculate sum area of a particular coordinate?

@mohd akmal masud Sorry for the late reply. I was going through old comments and discovered that I wasn't following this questio...

3 months ago | 0

Answered

Create a specific colormap for a contour plot

Type "colorbar" in the command window to view the colorbar. You can then see the limits of the colormap. You can change the limi...

Create a specific colormap for a contour plot

Type "colorbar" in the command window to view the colorbar. You can then see the limits of the colormap. You can change the limi...

3 months ago | 0

Answered

How to I make data evenly spaced when displaying on a plot?

Have you tried using strips?

How to I make data evenly spaced when displaying on a plot?

Have you tried using strips?

3 months ago | 0

Answered

Merging Tables from 3 other tables

You can use join S12 = join(S1,S2); Sall= join(S12,S3) You can also use Join Tables in the live editor. If you don't want ...

Merging Tables from 3 other tables

You can use join S12 = join(S1,S2); Sall= join(S12,S3) You can also use Join Tables in the live editor. If you don't want ...

3 months ago | 0

Answered

How to know the value of my point on the colorbar?

x = 0.1:0.01:0.19; y = 0.1:0.01:0.19; z = 0.1:0.01:0.19; [X, Y, Z] = meshgrid(x, y, z); f = X.*exp(X.^2 + Y.^2 + Z.^2); f...

How to know the value of my point on the colorbar?

x = 0.1:0.01:0.19; y = 0.1:0.01:0.19; z = 0.1:0.01:0.19; [X, Y, Z] = meshgrid(x, y, z); f = X.*exp(X.^2 + Y.^2 + Z.^2); f...

3 months ago | 0

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Answered

How to plot four dimensional data?

This was just answered here: https://www.mathworks.com/matlabcentral/answers/1563276-how-plot-4d-data?s_tid=srchtitle

How to plot four dimensional data?

This was just answered here: https://www.mathworks.com/matlabcentral/answers/1563276-how-plot-4d-data?s_tid=srchtitle

3 months ago | 0

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Answered

Borghi Diagram in MATLAB

This is how I would do it. First plot the lines and change the scales to log. %Plot lines plot([10 1 .1 10^4],[.1 1 10 10^2....

Borghi Diagram in MATLAB

This is how I would do it. First plot the lines and change the scales to log. %Plot lines plot([10 1 .1 10^4],[.1 1 10 10^2....

3 months ago | 1

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Answered

Comparing ones in a table

Here is one way of doing it. t = table; t.column1 = randi([0 1],[7 1]); t.column2 = randi([0 1],[7 1]); t.column3 = [0 1 1 ...

Comparing ones in a table

Here is one way of doing it. t = table; t.column1 = randi([0 1],[7 1]); t.column2 = randi([0 1],[7 1]); t.column3 = [0 1 1 ...

3 months ago | 0

Answered

How to store function values generated by a for loop?

I added outputs to your functions called z. clc;clear x = [-2,-1,0,1,2,3]; y = [1,4,11,16,13,-4]; d0 = difdiv(x,y); d = d0(...

How to store function values generated by a for loop?

I added outputs to your functions called z. clc;clear x = [-2,-1,0,1,2,3]; y = [1,4,11,16,13,-4]; d0 = difdiv(x,y); d = d0(...

3 months ago | 0

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Answered

Whenever I try to use my function f(x,y) I get an error message that says that I need to define f.

I do not have the error when I run it. f = @(x,y) x+y; f(6,7) Are you defining f as a variable afterwards as such? f = @(x,y...

Whenever I try to use my function f(x,y) I get an error message that says that I need to define f.

I do not have the error when I run it. f = @(x,y) x+y; f(6,7) Are you defining f as a variable afterwards as such? f = @(x,y...

3 months ago | 0

Answered

Please explain for me this code , and what does each function do in detail ?

This was answered here: https://www.mathworks.com/matlabcentral/answers/3338-lagrange-interpolation-m

Please explain for me this code , and what does each function do in detail ?

This was answered here: https://www.mathworks.com/matlabcentral/answers/3338-lagrange-interpolation-m

3 months ago | 1

Answered

filling matrix in matlab code

matrice = zeros(10); for i=1:10 matrice(1,i)=i; end matrice

filling matrix in matlab code

matrice = zeros(10); for i=1:10 matrice(1,i)=i; end matrice

3 months ago | 0

Answered

How can I correct the wrong size of a variable (matrix instead of a vector)?

This line here creates a matrix. When one numerical value (n) is entered into the zeros function, it creates a n by n matrix. m...

How can I correct the wrong size of a variable (matrix instead of a vector)?

This line here creates a matrix. When one numerical value (n) is entered into the zeros function, it creates a n by n matrix. m...

3 months ago | 1

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Answered

How to show that calculation is going in MATLAB App

You can create a status text in the App Designer by dragging "Label" onto your app in Design View. You can edit the font, alignm...

How to show that calculation is going in MATLAB App

You can create a status text in the App Designer by dragging "Label" onto your app in Design View. You can edit the font, alignm...

3 months ago | 0

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Answered

Flip a matrix from 31 x 1000 to 1000 x 31 and retain same order of elements

You can tranpose the matrix with a ' matrix = rand(3,10) matrix_transposed = matrix'

Flip a matrix from 31 x 1000 to 1000 x 31 and retain same order of elements

You can tranpose the matrix with a ' matrix = rand(3,10) matrix_transposed = matrix'

3 months ago | 1

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Answered

How do I change color diffusion in jet colormap?

%% Example data x = (2:-0.1:0); data = sin(x); %% Shift the values towards the center, so you get a circle instead of an an...

How do I change color diffusion in jet colormap?

%% Example data x = (2:-0.1:0); data = sin(x); %% Shift the values towards the center, so you get a circle instead of an an...

3 months ago | 1

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Answered

I want to change the name of elements in a variable

You can save a string array with those names as such: Countries = ["UK";"Canada"; "France";"Italy";"Japan";"United States"]...

I want to change the name of elements in a variable

You can save a string array with those names as such: Countries = ["UK";"Canada"; "France";"Italy";"Japan";"United States"]...

3 months ago | 0

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Answered

Select particular 3D volumes of a 4D matrix

matrix_4D = matrix_4D(:,:,:,[1:11 14:29]);

Select particular 3D volumes of a 4D matrix

matrix_4D = matrix_4D(:,:,:,[1:11 14:29]);

3 months ago | 1

Answered

How do I find means of samples and then mean of the means?

Although it sounds like a homework question, I'll answer it since it is basic. random = randi(1000000,1000,25); mean_row = mea...

How do I find means of samples and then mean of the means?

Although it sounds like a homework question, I'll answer it since it is basic. random = randi(1000000,1000,25); mean_row = mea...

3 months ago | 0

Answered

How can I create a data table and export it as an excel file?

Hey bobby! Glad to see you again! Here you are: datadirectory = '/Users/name/Desktop/data/'; import = dir(fullfile(datadir...

How can I create a data table and export it as an excel file?

Hey bobby! Glad to see you again! Here you are: datadirectory = '/Users/name/Desktop/data/'; import = dir(fullfile(datadir...

4 months ago | 1

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Answered

Adding labels to fsurf contour lines

You can add text by entering the following: text(0,30,160,'Text Label','Fontsize',12) where 0, 30, and 160 are the x, y, and...

Adding labels to fsurf contour lines

You can add text by entering the following: text(0,30,160,'Text Label','Fontsize',12) where 0, 30, and 160 are the x, y, and...

4 months ago | 0

Answered

How to assign xlabel,ylabel from my selected popup menu list?

If App Designer: value = app.DropDown.Value; value2 = app.DropDown2.Value; value2 = app.DropDown2.Value; if value == 'Opti...

How to assign xlabel,ylabel from my selected popup menu list?

If App Designer: value = app.DropDown.Value; value2 = app.DropDown2.Value; value2 = app.DropDown2.Value; if value == 'Opti...

4 months ago | 0

Answered

How to find the intersection of a fitting line with a logarithmic y-axis?

A= [10 40 60 80]; B = [5 6 7 8]; scatter(B,A,20,'filled') set(gca,'YScale','log') % Polyfit p = polyfit(B,A,2);% 2nd or...

How to find the intersection of a fitting line with a logarithmic y-axis?

A= [10 40 60 80]; B = [5 6 7 8]; scatter(B,A,20,'filled') set(gca,'YScale','log') % Polyfit p = polyfit(B,A,2);% 2nd or...

4 months ago | 0

Answered

how to find peaks for 100%,75%,50%,25% of the max peak

I'm not entirely sure what peaks you are trying to identify. Below are techniques you can use. You can add labels to your pea...

how to find peaks for 100%,75%,50%,25% of the max peak

I'm not entirely sure what peaks you are trying to identify. Below are techniques you can use. You can add labels to your pea...

4 months ago | 0

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Answered

How do I obtain a 2D or 3D representation of a georeferenced raster?

You can use the surf function. Below are links to some examples: https://www.mathworks.com/matlabcentral/answers/598591-how-to-...

How do I obtain a 2D or 3D representation of a georeferenced raster?

You can use the surf function. Below are links to some examples: https://www.mathworks.com/matlabcentral/answers/598591-how-to-...

4 months ago | 1

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Answered

How to plot entire row of numerical matrix from corresponding logical array?

Drill = [ 0.2324 0.0010 -0.2805 0.2324 0.0005 -0.2805 0.2322 0 -0.2800 0.2324 0 -0....

How to plot entire row of numerical matrix from corresponding logical array?

Drill = [ 0.2324 0.0010 -0.2805 0.2324 0.0005 -0.2805 0.2322 0 -0.2800 0.2324 0 -0....

4 months ago | 0

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