Answered

How to use str2func with a function handle in the string

From the documentation for str2func, "Workspace variables are not available to the str2func function." See this answer. You ...

How to use str2func with a function handle in the string

From the documentation for str2func, "Workspace variables are not available to the str2func function." See this answer. You ...

2 years ago | 0

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Answered

Finding rows/indices by comparing individual elements of rows of one matrix to another

For less than or equal to: find(all(m1 <= m2, 2)) For less than: find(all(m1 < m2, 2))

Finding rows/indices by comparing individual elements of rows of one matrix to another

For less than or equal to: find(all(m1 <= m2, 2)) For less than: find(all(m1 < m2, 2))

2 years ago | 2

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Answered

How to skip lines to execute/run?

return % ? Or have your if block encompass the lines to be skipped and change the condition to the opposite of your condition f...

How to skip lines to execute/run?

return % ? Or have your if block encompass the lines to be skipped and change the condition to the opposite of your condition f...

2 years ago | 1

Answered

How to design GUI buttons?

You can set the CData of a uicontrol pushbutton: p = uicontrol('Style', 'pushbutton', 'Position', [100, 150, 100, 30], 'String'...

How to design GUI buttons?

You can set the CData of a uicontrol pushbutton: p = uicontrol('Style', 'pushbutton', 'Position', [100, 150, 100, 30], 'String'...

2 years ago | 1

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Answered

How to bold dialog box?

You can tell msgbox, inputdlg, warndlg, errordlg, and questdlg (and maybe others?) to use a tex interpreter. They all default to...

How to bold dialog box?

You can tell msgbox, inputdlg, warndlg, errordlg, and questdlg (and maybe others?) to use a tex interpreter. They all default to...

2 years ago | 2

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Answered

How can I extract points (sum of values) from variable size groups of lines (separated from NaN values) in the same column ?

Potentially over-complicated but should work: cA = cumsum([A, B],'omitnan'); idx = [isnan(A(2:end)); 1] & ~isnan(A); C = diff...

How can I extract points (sum of values) from variable size groups of lines (separated from NaN values) in the same column ?

Potentially over-complicated but should work: cA = cumsum([A, B],'omitnan'); idx = [isnan(A(2:end)); 1] & ~isnan(A); C = diff...

2 years ago | 1

Answered

How to split the data inside the matrix correctly?

Here's another uglier way. C = mat2cell(matrix, diff([0; find(diff(matrix(:,2))); size(matrix,1)]), 2);

How to split the data inside the matrix correctly?

Here's another uglier way. C = mat2cell(matrix, diff([0; find(diff(matrix(:,2))); size(matrix,1)]), 2);

2 years ago | 0

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Answered

Using sign function in Matlab

sign(x) returns a matrix the same size as x. If the dimensions of x (and therefore sign(x)) are N-1 x 1 and the dimensions of D2...

Using sign function in Matlab

sign(x) returns a matrix the same size as x. If the dimensions of x (and therefore sign(x)) are N-1 x 1 and the dimensions of D2...

2 years ago | 0

Answered

How to do correlation between each row of two matrices?

The default correlation coefficient which corr calculates is described here (the Pearson linear correlation coefficient): https...

How to do correlation between each row of two matrices?

The default correlation coefficient which corr calculates is described here (the Pearson linear correlation coefficient): https...

2 years ago | 1

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Answered

how to get cartesian equation from parametric equation

Maybe something like this? syms t x y eqns = [x == 10*t^2; y == 2*t^2]; out = subs(eqns(2), t, rhs(isolate(eqns(1), t))); wh...

how to get cartesian equation from parametric equation

Maybe something like this? syms t x y eqns = [x == 10*t^2; y == 2*t^2]; out = subs(eqns(2), t, rhs(isolate(eqns(1), t))); wh...

2 years ago | 0

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Answered

Input data, round down, loop variable

How does this work? (I'm assuming T.y is monotonically increasing) % example table: x = randi(10,59,1); y = cumsum(rand(59,1)...

Input data, round down, loop variable

How does this work? (I'm assuming T.y is monotonically increasing) % example table: x = randi(10,59,1); y = cumsum(rand(59,1)...

2 years ago | 1

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Answered

How do I plot on the same figure from 2 functions?

When you name a variable in your function figure, you can no longer access the function figure(). For example: >> figure = 1; ...

How do I plot on the same figure from 2 functions?

When you name a variable in your function figure, you can no longer access the function figure(). For example: >> figure = 1; ...

2 years ago | 1

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Answered

How can I remove the error "unable to perform because the indices on the left side are not compatible with the size of the right side"

It seems like you are calling sum on 2D arrays, so each output would be a row vector, which you can't store within Output(i). Yo...

How can I remove the error "unable to perform because the indices on the left side are not compatible with the size of the right side"

It seems like you are calling sum on 2D arrays, so each output would be a row vector, which you can't store within Output(i). Yo...

2 years ago | 0

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Answered

Y axis in scientific form

How does this work for you? ax = axes; plot(ax, 1:10, (1:10).^10) % get rid of 'x 10^N' in corner ax.YAxis.Exponent = 0; ...

Y axis in scientific form

How does this work for you? ax = axes; plot(ax, 1:10, (1:10).^10) % get rid of 'x 10^N' in corner ax.YAxis.Exponent = 0; ...

2 years ago | 0

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Answered

how to skip the index of array

Alternatively, idx = [1,2,1,2,4]; N = 6; % max index out = repmat(1:N, numel(idx), 1)'; out = reshape(out(out ~= idx), [],...

how to skip the index of array

Alternatively, idx = [1,2,1,2,4]; N = 6; % max index out = repmat(1:N, numel(idx), 1)'; out = reshape(out(out ~= idx), [],...

2 years ago | 0

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Answered

Matrix dimensions must agree

A is a 4x9 array, so A' is a 9x4 array. A.*A' This tries to use element-wise multiplication on A and A', but they aren't the s...

Matrix dimensions must agree

A is a 4x9 array, so A' is a 9x4 array. A.*A' This tries to use element-wise multiplication on A and A', but they aren't the s...

2 years ago | 0

Answered

How do I fix my legend?

You can still use the same idea as Ruger28's comment, just pull the pertinent values from mutualInfoTotal: baseNames = {'T9C11'...

How do I fix my legend?

You can still use the same idea as Ruger28's comment, just pull the pertinent values from mutualInfoTotal: baseNames = {'T9C11'...

2 years ago | 0

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Answered

How to find the time of event?

For this sample matrix: >> matrix = [cumsum(10*rand(25,1)), rand(25,1) < 0.1] matrix = 2.6774 0 3.9889 ...

How to find the time of event?

For this sample matrix: >> matrix = [cumsum(10*rand(25,1)), rand(25,1) < 0.1] matrix = 2.6774 0 3.9889 ...

2 years ago | 0

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Answered

How to check an array for its content?

It sounds like you want to make sure isnan and isempty do return 0. Also, there is no need to explicitly check if the result of ...

How to check an array for its content?

It sounds like you want to make sure isnan and isempty do return 0. Also, there is no need to explicitly check if the result of ...

2 years ago | 0

Answered

Reverse the Colormap of Surf plot

Grab the colormap and flip it upside down: f = figure; surf(peaks(50)) colormap(f, flipud(colormap(f))) colorbar

Reverse the Colormap of Surf plot

Grab the colormap and flip it upside down: f = figure; surf(peaks(50)) colormap(f, flipud(colormap(f))) colorbar

2 years ago | 2

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Answered

Findpeaks: find the interpolation points for the width with the x axis

After you call findpeaks, you could obtain a handle to the current axes, find the handle(s) to the yellow horizontal line(s) whi...

Findpeaks: find the interpolation points for the width with the x axis

After you call findpeaks, you could obtain a handle to the current axes, find the handle(s) to the yellow horizontal line(s) whi...

2 years ago | 0

Answered

How can i see if the value occurs in an array for the first time?

Try one of these. condition = ~ismember(loadp(i),loadp(1:i-1)); % or condition = find(loadp==loadp(i),1) == i; They should b...

How can i see if the value occurs in an array for the first time?

Try one of these. condition = ~ismember(loadp(i),loadp(1:i-1)); % or condition = find(loadp==loadp(i),1) == i; They should b...

2 years ago | 0

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Answered

How to count the number of "" true "" and ""false"" in matrix

How to show a message "True is 66.7%" fprintf('True is %.1f%%\n', 100*TRUES/numel(a));

How to count the number of "" true "" and ""false"" in matrix

How to show a message "True is 66.7%" fprintf('True is %.1f%%\n', 100*TRUES/numel(a));

2 years ago | 0

Answered

"1D" scatter plot without x-axis

If you only have one-dimensional data but you want to display it on two axes, you'll have to tell MATLAB where (i.e. if you have...

"1D" scatter plot without x-axis

If you only have one-dimensional data but you want to display it on two axes, you'll have to tell MATLAB where (i.e. if you have...

2 years ago | 0

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Answered

Keyboard Function Not Responding

Add a drawnow before your pause(.01) to flush the graphics queue. Or use a longer pause, but of course that messes with the ani...

Keyboard Function Not Responding

Add a drawnow before your pause(.01) to flush the graphics queue. Or use a longer pause, but of course that messes with the ani...

2 years ago | 1

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Answered

"Invalid second data argument" error while using "plot" function (Lagrange Interpolation)

You are correct, it is complaining because pointy1 is a function handle. You can obtain the output of pointy1 when evaluated at ...

"Invalid second data argument" error while using "plot" function (Lagrange Interpolation)

You are correct, it is complaining because pointy1 is a function handle. You can obtain the output of pointy1 when evaluated at ...

2 years ago | 1

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Answered

how to plot a vector

Vsw is a scalar, so nothing will show when you plot it. You are overwriting the value of Vsw in each loop of your for loop. Do y...

how to plot a vector

Vsw is a scalar, so nothing will show when you plot it. You are overwriting the value of Vsw in each loop of your for loop. Do y...

2 years ago | 1

Answered

cannot fill table with chars?

x=[1;2;3]; y=[4;5;6]; T=table(x,y); T.words = repmat({''}, 3, 1); % this creates a 3x1 cell array After these lines, T.words...

cannot fill table with chars?

x=[1;2;3]; y=[4;5;6]; T=table(x,y); T.words = repmat({''}, 3, 1); % this creates a 3x1 cell array After these lines, T.words...

2 years ago | 1

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Answered

Plot: x axis and y axis values with commas as 1000 separators

You can format the tick labels using the TickLabelFormat property of the axis. For example: ax = axes('YScale','log'); plot(ax...

Plot: x axis and y axis values with commas as 1000 separators

You can format the tick labels using the TickLabelFormat property of the axis. For example: ax = axes('YScale','log'); plot(ax...

2 years ago | 0

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Answered

Saving data in a FOR loop

Does this work? n=2:50; b = zeros(numel(n),1); for i = 1:numel(n) a = (t_r>=Tvec(n(i))-dt/2) & (t_r<Tvec(n(i))+dt/2); ...

Saving data in a FOR loop

Does this work? n=2:50; b = zeros(numel(n),1); for i = 1:numel(n) a = (t_r>=Tvec(n(i))-dt/2) & (t_r<Tvec(n(i))+dt/2); ...

2 years ago | 0

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