Answered

How can I display text on pcolor map like in the image below?

L = membrane(1, 100); s=pcolor(L); s.EdgeColor='none'; set(gca, 'YDir', 'reverse') xl = xlim; yl = ylim; n = 1; xy =[]; ...

How can I display text on pcolor map like in the image below?

L = membrane(1, 100); s=pcolor(L); s.EdgeColor='none'; set(gca, 'YDir', 'reverse') xl = xlim; yl = ylim; n = 1; xy =[]; ...

18 Tage ago | 0

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Answered

How to change the values of the corners in a matrix

a= zeros(10, 10); % smaller matrix for easy display % for corners a([1 end], [1 end]) = 1; a

How to change the values of the corners in a matrix

a= zeros(10, 10); % smaller matrix for easy display % for corners a([1 end], [1 end]) = 1; a

18 Tage ago | 0

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Answered

Why does my code slow down around the 20th iteration?

The recursive function is the culprit of the speed. Simply replace them with mean and var. A_set = []; n=1; while 1==1 %eval...

Why does my code slow down around the 20th iteration?

The recursive function is the culprit of the speed. Simply replace them with mean and var. A_set = []; n=1; while 1==1 %eval...

18 Tage ago | 0

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Answered

Plotting with bisection method

Bisection method tries to find solution in a given interval. Generally, you don't know how many roots a non-linear equation has...

Plotting with bisection method

Bisection method tries to find solution in a given interval. Generally, you don't know how many roots a non-linear equation has...

18 Tage ago | 0

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Answered

Name table columns with variable index

tab = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/980210/MATWORKS.csv'); head(tab) varnames = ta...

Name table columns with variable index

tab = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/980210/MATWORKS.csv'); head(tab) varnames = ta...

19 Tage ago | 0

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Answered

How to save results in a file without overwritting previous results????

Use append option when you save the data to files. [You can also use low-level fopen with option 'a+' for appending] % create ...

How to save results in a file without overwritting previous results????

Use append option when you save the data to files. [You can also use low-level fopen with option 'a+' for appending] % create ...

19 Tage ago | 0

Answered

Output argument's name same as input argument's

Functionally, they are same. However, some differences may exist: The obvious one is the program style (using input as output ...

Output argument's name same as input argument's

Functionally, they are same. However, some differences may exist: The obvious one is the program style (using input as output ...

19 Tage ago | 0

Answered

How to output a cell array using fprintf?

% cell array a = {'# To Select', 'Names', 'Barcodes', 'Prices'; 1, 'ABC', 1234, 4.5} fprintf("%s\n", formattedDisplayText(a))

How to output a cell array using fprintf?

% cell array a = {'# To Select', 'Names', 'Barcodes', 'Prices'; 1, 'ABC', 1234, 4.5} fprintf("%s\n", formattedDisplayText(a))

20 Tage ago | 0

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Answered

showing empty plot in nexttile or subplot

a = "r"; b="g"; c="b"; d="m"; x{1}=[0.1 0.2 0.3 0.6 0.24 0.67]; y{1}=[2 1 4 7 4 5]; t{1}=[a b a c d b] x{2} = []; y{2} ...

showing empty plot in nexttile or subplot

a = "r"; b="g"; c="b"; d="m"; x{1}=[0.1 0.2 0.3 0.6 0.24 0.67]; y{1}=[2 1 4 7 4 5]; t{1}=[a b a c d b] x{2} = []; y{2} ...

20 Tage ago | 0

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Answered

Can writetable delimit strings using single-quotes?

You may not change the quote string with writetable directly. However, you can add a single quote to your string before writing...

Can writetable delimit strings using single-quotes?

You may not change the quote string with writetable directly. However, you can add a single quote to your string before writing...

20 Tage ago | 0

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Answered

When i run the code, i dont see any plot, and i'm not sure why?

syms x; increment = 0.0; m=0.5+increment; %Units are in SI Pr=0.718; %Prandtl number rho=1.204...

When i run the code, i dont see any plot, and i'm not sure why?

syms x; increment = 0.0; m=0.5+increment; %Units are in SI Pr=0.718; %Prandtl number rho=1.204...

20 Tage ago | 0

Answered

automatically scale display range to eliminate outliers

y = randn(50, 50); y (20, 20) = 1e8; % outlier subplot(121) imagesc(y); % outlier removed colorbar subplot(122) imagesc...

automatically scale display range to eliminate outliers

y = randn(50, 50); y (20, 20) = 1e8; % outlier subplot(121) imagesc(y); % outlier removed colorbar subplot(122) imagesc...

20 Tage ago | 1

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Answered

Edit legend description and make a dot in on of the character

Try to modify the following: % generate some data data = (1:10)' + randi([3 20], [1 4]); plot(data) legend(["1 $s=u$" "2 $s=...

Edit legend description and make a dot in on of the character

Try to modify the following: % generate some data data = (1:10)' + randi([3 20], [1 4]); plot(data) legend(["1 $s=u$" "2 $s=...

20 Tage ago | 0

Answered

plotting nonlinear equation along real and imaginary axis

Try the following: Re-arrange the equation so that it is polynomial of complex variable z with coefficients being function of r...

plotting nonlinear equation along real and imaginary axis

Try the following: Re-arrange the equation so that it is polynomial of complex variable z with coefficients being function of r...

20 Tage ago | 0

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Answered

sum of dirac delta function

syms x t y(x) = dirac(x-1); for i=4:3:200 y(x) = y(x) + dirac(x-i); end z = y(x)* exp(-4*(t-x)); y z

sum of dirac delta function

syms x t y(x) = dirac(x-1); for i=4:3:200 y(x) = y(x) + dirac(x-i); end z = y(x)* exp(-4*(t-x)); y z

20 Tage ago | 0

Answered

how to divide the Dataset into xtrain xtest ytrain ytest

% doc cvpartition data = randn(2310, 25); %cv = cvpartition(2310, 'Holdout', 0.3); %idxTrain = training(cv); %idxTest = te...

how to divide the Dataset into xtrain xtest ytrain ytest

% doc cvpartition data = randn(2310, 25); %cv = cvpartition(2310, 'Holdout', 0.3); %idxTrain = training(cv); %idxTest = te...

21 Tage ago | 1

Answered

need to skip iterations in a for loop

L=zeros(1024,1024); % for n=(2:1022:3) % L(1024,n)=1 % end % Set the last row (first end), column 2 to last column wi...

need to skip iterations in a for loop

L=zeros(1024,1024); % for n=(2:1022:3) % L(1024,n)=1 % end % Set the last row (first end), column 2 to last column wi...

21 Tage ago | 1

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Answered

How to calculate the width that contains 60% of the total area of peaks?

load position load Intensity whos plot(x2, Int); hold on % find the max [maxI, idx] = max(Int); maxX = x2(idx) n = length...

How to calculate the width that contains 60% of the total area of peaks?

load position load Intensity whos plot(x2, Int); hold on % find the max [maxI, idx] = max(Int); maxX = x2(idx) n = length...

21 Tage ago | 0

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Answered

I need help with plotting

syms t Zc=300; R=100; s=100; v=300/(1*10^-6) tpulssi=s/v k=-1000/tpulssi p=(R-Zc)/(R+Zc) s2=25 tpr=s2/v %heijastuva t...

I need help with plotting

syms t Zc=300; R=100; s=100; v=300/(1*10^-6) tpulssi=s/v k=-1000/tpulssi p=(R-Zc)/(R+Zc) s2=25 tpr=s2/v %heijastuva t...

21 Tage ago | 1

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Answered

Assigning same color for same value at different plots

x{1}=[0.1 0.4 0.6 0.8]; y{1}=[0.2 0.3 0.7 0.9]; name{1}=["A" "B" "C" "A"]; x{2}=[0.1 0.2 0.4 0.6 0.5 0.8]; y{2}=[0.2 0.5 ...

Assigning same color for same value at different plots

x{1}=[0.1 0.4 0.6 0.8]; y{1}=[0.2 0.3 0.7 0.9]; name{1}=["A" "B" "C" "A"]; x{2}=[0.1 0.2 0.4 0.6 0.5 0.8]; y{2}=[0.2 0.5 ...

21 Tage ago | 0

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Answered

How do I plot a graph for ϴ for a given range of independent variables?

Assume that r, theta, phi are 3d spherical coordinates. theta is elevation and phi is azimuth. The following is the code to pl...

How do I plot a graph for ϴ for a given range of independent variables?

Assume that r, theta, phi are 3d spherical coordinates. theta is elevation and phi is azimuth. The following is the code to pl...

24 Tage ago | 0

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Answered

I want to create printouts with exact sizes (1=1")

g = figure; g.Units = 'inches'; g.Position = [1 2 3 3]; % 3 by 3 inches plot(rand(10,1)); saveas('test.pdf'); % You ca...

I want to create printouts with exact sizes (1=1")

g = figure; g.Units = 'inches'; g.Position = [1 2 3 3]; % 3 by 3 inches plot(rand(10,1)); saveas('test.pdf'); % You ca...

24 Tage ago | 0

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Answered

Trying to understand the single-sided FFT

Assume X(k) = FFT(x(n)). Then one estimate of Power Spectrum Density (PSD) of x(n) can be given as P(k) = X(k)^2 / N for genera...

Trying to understand the single-sided FFT

Assume X(k) = FFT(x(n)). Then one estimate of Power Spectrum Density (PSD) of x(n) can be given as P(k) = X(k)^2 / N for genera...

24 Tage ago | 0

Answered

Extract data from a table corresponding to specific time

Save your data into a text file: data.txt x = readtable("data.txt"); a= strrep(string(x.Var1) + " " + string(x.Var2), "'", ...

Extract data from a table corresponding to specific time

Save your data into a text file: data.txt x = readtable("data.txt"); a= strrep(string(x.Var1) + " " + string(x.Var2), "'", ...

25 Tage ago | 0

Answered

How to plot averaged ROC curve?

% Create sample data numPoints = 50; nCurves = 10; x = sort(rand(numPoints, nCurves)); y = (sort(rand(numPoints, nCurves)))....

How to plot averaged ROC curve?

% Create sample data numPoints = 50; nCurves = 10; x = sort(rand(numPoints, nCurves)); y = (sort(rand(numPoints, nCurves)))....

25 Tage ago | 0

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Answered

Removing negative values of 3d data

x = load("ggv.mat"); GGV = x.GGV; figure surf(GGV(:,:,2), GGV(:,:,3), GGV(:,:,1), 'EdgeColor', 'none'); xlabel('x'); ylabel(...

Removing negative values of 3d data

x = load("ggv.mat"); GGV = x.GGV; figure surf(GGV(:,:,2), GGV(:,:,3), GGV(:,:,1), 'EdgeColor', 'none'); xlabel('x'); ylabel(...

28 Tage ago | 0

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Answered

How do I crop out a certain part within a matrix of numbers?

Are you looking for this? A = [1 2 3 4 5 ; 4 9 6 3 9; 2 5 4 1 3 ] B = A(2:3, 3:5) %% More general X = [1 2 ...

How do I crop out a certain part within a matrix of numbers?

Are you looking for this? A = [1 2 3 4 5 ; 4 9 6 3 9; 2 5 4 1 3 ] B = A(2:3, 3:5) %% More general X = [1 2 ...

28 Tage ago | 1

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Answered

How Can I Resolve Plotting Error?

clc; %clear the console clear all; %clear all the variables %%defitions temp=2000; x_2=0.01:0.01:0.99; % Get th...

How Can I Resolve Plotting Error?

clc; %clear the console clear all; %clear all the variables %%defitions temp=2000; x_2=0.01:0.01:0.99; % Get th...

28 Tage ago | 0

Answered

Removing negative values of 3d data

% Your data data = randn(357, 177, 3); % limit to 0 data(:, :, 3) = max(data(:, :, 3), 0); % to limit the surface up to 0...

Removing negative values of 3d data

% Your data data = randn(357, 177, 3); % limit to 0 data(:, :, 3) = max(data(:, :, 3), 0); % to limit the surface up to 0...

28 Tage ago | 0

Answered

How to show the accuracy on a confusion matrix

You nee to add column and row summaries. Check out the following example from doc. load fisheriris X = meas; Y = species; ...

How to show the accuracy on a confusion matrix

You nee to add column and row summaries. Check out the following example from doc. load fisheriris X = meas; Y = species; ...

28 Tage ago | 0