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Add two numbers
Given a and b, return the sum a+b in c.

11 years 前

已解决

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

11 years 前

已解决

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

11 years 前

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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

11 years 前

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How to delete cell entries with an index vector
Hi! Are you sure that b is not longer than size(1) of A? Is b really a logical vector with true or false? I have no problem i...

13 years 前 | 0

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check if numbers exist in a structure field
Hi! You may write m = [files(1,1).day(:).median]; to get a vector of all values in 'day'. Then you can use ismember/...

13 years 前 | 0

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Convert Char to Cell
Hi! It seems you want to do: ListCell = num2cell(List); NewCol = size(List, 2) + 1; for n = 1:size(Table, ...

13 years 前 | 0

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Create string of dots characters
Use repmat: repmat('.', 1, 10)

13 years 前 | 1

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Can I use a for loop in the condition statement of an if branch??
Can you give an example? As far as I understand you have some values in your array that must match some condition. You may write...

13 years 前 | 0

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optimize inefficient piece of code
Hi! You can of course avoid the loop with p3(1:3, ind==1) = p1(:, ind==1); p3(1:3, ind==2) = p2(:, ind==2); This a...

13 years 前 | 0

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Cell 2 3d matrix
If C is your cell, try cat(3, C{:})

13 years 前 | 0

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Save data from a loop with a negative variable
Hi! Make a table like tt = -5:5; Access your variable with index -3 like V(tt==-3) PS: you should not dou...

13 years 前 | 0

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Plot the streamlines and pressure for flow around a rotating cylinder
Hi! Please use the code formatting for pasting code, thanks! And what is the question? What did you do? Where does the cod...

13 years 前 | 0

已回答
Creating a polyval function
Hi! But you can use polyval with just p and x!

13 years 前 | 2

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creating a diagonal matrix?
Hi! diag(q)

13 years 前 | 0

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How to calculate the average without taking zeros values?
Hi! for n = 1:size(Y, 1) Average(n) = mean(Y(n, (Y(n, :) ~= 0))); end

13 years 前 | 1

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Selecting only some rows of a matrix
Hi! So, what is "i"? Did you mean ":"? I assume ":" here. Start by looking at the first criterion, you can write crit...

13 years 前 | 0

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Use regexp in Matlab to return the value of a variable from a text file
Hi! Maybe there is no need for a regexp. Read in the file, separate all lines at "=" and find the desired variable in the lef...

13 years 前 | 0

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How can i scan Column A in a matrix and if its true to have it average values in Column C
Hi! So you already imported your data into matlab? What kind of matrix do you have? Is it a cell array with strings in the fi...

13 years 前 | 0

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How to plot a subset of triangles after DelaunayTri
Hi! If you have a triangulation you can of course plot specific triangles (if you know them) with TRI = dt.Triangula...

13 years 前 | 1

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How can I transform a number to string with space using num2str?
Hi! Maybe this way? num = [1000; 1001]; % numeric part numpart = arrayfun(@(x) sprintf('%2d', mod(x,100)), num, 'U...

13 years 前 | 0

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Activate radio button from another radio button
Hi! Usually the first argument is the handle to the object whose callback you are calling. You can get this from <http://www....

13 years 前 | 0

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A game like "simon"
Hi! Some hints to get you started: * You can get the player's name using "input". * Make a loop from 1 to, let's say, 100...

13 years 前 | 0

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MATLAB Data from loop not saved
Hi! You can not use doubles as indices. Do instead: Res_E = logspace(0,2,100); for B = 1:length(Res_E); Tens =...

13 years 前 | 0

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How to avoid setting of local directory as search path on startup?
Hi! Use the matlab startup script <http://www.mathworks.com/help/matlab/ref/matlabrc.html?searchHighlight=matlabrc matlabrc> ...

13 years 前 | 0

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Creating Dynamic Vector in Matlab GUI
Hi! Use a cell array for your file names (strings). Each time you upload a new image you add one cell to the array. After tha...

13 years 前 | 0

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How to find first nonzero element/first '1' per row and set other elements to zero without loops in 3D Matrix
Hi! Why don't you want loops? It is the easiest way. Try this: ix = 1:size(A, 1); % loop over al columns for col =...

13 years 前 | 0

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Change color of points
Hi! Look at the help of <http://www.mathworks.com/help/matlab/ref/plot.html plot>. You may give a LineSpec there.

13 years 前 | 0

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Reformatting cell arrays of cell arrays
Hi! Try C{1, 1} = {'11'; '12'}; C{2, 1} = {'21'; '22'}; C{3, 1} = {'31'; '32'}; Rows = 3; Colu...

13 years 前 | 0

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Error using ==> textscan Error
What is "fid"? Is it empty ...?

13 years 前 | 0