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How should I scratch this ticket?
function [R,cnt] = winning_numbers() % Generates 6 winning numbers on [1 25] and returns a seed to the % twister algori...

15 years ago | 2

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what does {:} mean?
When used alone, it means to display all contents of a cell array. C = {magic(3);'how';rand(1,2);'pizzaz';magic(8)}; C{:}...

15 years ago | 1

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Attempting to rearrange a 3x3 "magic" matrix
If it must be done using storage techniques (as you seem to be suggesting), simply work your way down the matrix. M = magic(3...

15 years ago | 0

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help me please
Thanks for showing some work. Here is how one could approach the first task: n = 10000; m = 100; PROB = zeros(1,m); f...

15 years ago | 1

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GUI picture is already loaded in axes when GUI opens
In the gui_OpeningFcn, put: cla reset(gca) % Should undo the zoom.

15 years ago | 1

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Answered
plot of a string vector vs numeric vector
y=[1 2 3 4 5 6] x=['a','b','c','d','e','f'] plot(y) set(gca,'xticklabel',x.')

15 years ago | 9

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Matrix/Image Merging
Kyle, what to do when multiple matches are found in B, since your example B has duplicates? % % % % % *EDIT* In response ...

15 years ago | 1

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guidata doesn't work (the way I expected it to)
The handles structure and the stuff stored in GUIDATA are not the same thing. If you want to be able to store new stuff in a st...

15 years ago | 0

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Adding new fields to a dataset array?
tmp.ID(1:5) = {'100'}; % If 5 is the size you want.

15 years ago | 0

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Beginner's roblems with arrays
I cannot see a clear pattern since you are setting timestep(3,T(1,2)+1:T(1,3)) = V(1,2); Now if it was THETA(2), that we co...

15 years ago | 0

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euclidean distance,output
You could make a little function: function y = mydist(x) % Takes a three digit binary string argument. switch x ca...

15 years ago | 0

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reshaping
A = [1 0 1 0 0 0 1]; B = [1 1 1 0 0 0 1]; s = reshape([A;B],1,[])

15 years ago | 0

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Help in solving an integral using MATLAB
f = @(x,y)(1./((3.11e-6)-((2.25e-6).*(((1-((x.^2)./(1e-8))).^2).*((1-((y.^2)./(1e-8))).^2).*(1+((1.1e-8).*(x.^2))+((1.1e-8).*(...

15 years ago | 1

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Answered
index exceeds matrix dimensions??
while a<=size(dH_df,1) && dH_df(a,b)<0.80 %line 199 If you want to find the row position of values between 0.80 and 0.85, ...

15 years ago | 0

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I set up a GUI with guide, but the input variables are not getting set.
Do you mean you want to pass parameters to set the initial of, say, an editbox or two? If so, you can access anything passed in...

15 years ago | 0

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File name is too long using IMREAD in GUI
I assume your error is on the line defining I. Put this right before that line and look at what is being passed. You are likel...

15 years ago | 0

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Setting Array Value
Another: A = repmat([1,3,1,7],3,1) % change the 3 to 5 to get 5 rows, etc...

15 years ago | 0

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Finding a minumum range of sequential values
What else does your data look like? Is it ones and zeros? Integers only? A single row vector, or matrix? Give all the detail...

15 years ago | 2

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Integration problem with a power/time curve
trapz(x,y) should give you W-Day. So take that answer and multiply by 24.

15 years ago | 0

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plotting selected lines from a matrix
I still think you meant to plot the columns, not the rows. But this works for me: test = repmat(magic(3),[1 1 4]); te...

15 years ago | 1

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Splitting a string of numbers and '|'
str = '1 | 2'; S = regexp(str,'\d+','match') Now S is a 1-by-2 cell array. strcmp(S{1},'1') strcmp(S{2},'2')

15 years ago | 2

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Manipulating graph interactively
I am not familiar with this function, but you could put a slider in the same figure with the axes and have the callback for the ...

15 years ago | 0

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waitbar + surf functions. are they incompatible?
From the help for WAITBAR (always a good place to look with any funciton!), we have this: h = waitbar(0,'Please wait...'); % ...

15 years ago | 0

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Cut and re-join strings
Rather than using a verbal description, show us what you want. For example, if you start with these: pat = 'MATLAB'; st...

15 years ago | 0

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Using handle graphics for more global variables
G = guidata(gcbf); % Get the application data G.newvariable = 5; % Store new variables in this data. G.newvariable2 = ...

15 years ago | 0

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Update Graph With Data Input
You need to put the code which updates the plot in the slider callback. After this code, put a call to DRAWNOW.

15 years ago | 0

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saving or not matrices
if ~all(isnan(A(:))) % Do the saving. end But it seems to me that *_if_* the only source of nans is from when you rep...

15 years ago | 0

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Matlab function
If you have an explicit function of one variable, you might have luck with a Newton's method <http://www.mathworks.com/matlabcen...

15 years ago | 1

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How do I round to the nearest arbitrary, enumerated value in MATLAB?
One approach: roundTargets = [0 2.7 8 11.1]; v = [0.1 2.2 1.6 7.3 10]; vRounded = interp1(roundTargets,roundTargets,v...

15 years ago | 5

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Answered
A second basic 'Find' question
idx = findstr([0 data>=X],[0 1]); idx = idx(ismembc(idx,findstr(data>Y,ones(1,N))))

15 years ago | 1

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