más de 15 años hace | 2

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get data from excel file
# |xlsread| to read both files into cell arrays. # Use set operations (like, say, |intersect|) to find the names that are commo...

más de 15 años hace | 0

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Matlab Minimum
find(A==min(A)) will get them all. Then you can choose whichever you like. To get just the last one find(A==min(A),1,'la...

más de 15 años hace | 2

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solving a linear initial value problem in MATLAB
Oh, sorry, it looks like Jan & I both misread/misinterpreted your questions. You're supposed to write your own ode integrator? ...

más de 15 años hace | 0

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warning: badly scaled matrix
The possibility of an ill-conditioned Jacobian is an inherent property of Newton/gradient methods. It occurs whenever the funct...

más de 15 años hace | 0

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solving a linear initial value problem in MATLAB
# Convert the third-order equation into a (3-D) first-order system # Write a function that defines the rate equations. The sys...

más de 15 años hace | 0

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Representing a Matrix Graphically (but not exactly)
z = [5 2 1 <etc> [m,n] = size(z); [x,y] = meshgrid(1:n,1:m); plot3(x(:),y(:),z(:),'o') or text(x(:),y(:),num2str(...

más de 15 años hace | 0

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FEVAL error in implementing Newton's method.
The accepted answer from Paulo looks like a great resource for the theory behind gradient methods, but I'm not sure if that's ac...

más de 15 años hace | 0

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Combining separate files
What are your globals c2 and z? Not having access to them, I hard-coded in a scalar for c2 and a 201-element vector for z, and ...

más de 15 años hace | 0

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Permutations function
OK, still not sure if I quite get all the details (I think I'm getting mired in the terminology of samples vs trials vs particip...

más de 15 años hace | 1

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Matrix Division - how does it work?
Yes, what you have is valid MATLAB, but what do you mean about how it would break down? This seems more like a question of line...

más de 15 años hace | 0

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How do I convert a value from a cell array into an integer?
In addition to what David and Andreas said, I'm wondering if this table is coming from a GUI (ie a |uitable|) or something like ...

más de 15 años hace | 6

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How to solve ODEs that are a function of the derivatives of the state variables
Ah, that actually wasn't what I was thinking (I don't know why, b/c in retrospect your question makes perfect sense). Anyway, t...

más de 15 años hace | 0

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Permutations function
Mostly going to echo the comments made by The Usual Suspects. In particular, can you explain what you're trying to histogram, w...

más de 15 años hace | 0

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Issue with fractional step-sizes
You're mixing up the "physical" steps and the array indexing. In RK methods, the intermediate steps are evaluated between collo...

más de 15 años hace | 1

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Matrix Division - how does it work?
Your example doesn't work, using standard MATLAB syntax, because A, B, and C would be row vectors (1-by-2), so [A B C] would be ...

más de 15 años hace | 7

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how to select name at random from list of names in text file?
General approach: # Read the names from file into a cell array of strings -- see |textscan| # Make a figure window with |uic...

más de 15 años hace | 0

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word scrambler script
Is this a homework problem? Without wanting to do the whole thing for you, let me suggest an approach that works: # Use the ...

más de 15 años hace | 0

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control mouse clicking
|ButtonDownFcn|? |ginput|? Please explain what you mean by "control mouse clicking operation". What exactly do you want to do...

más de 15 años hace | 0

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How can I use "dir" with multiple search strings? or join the results of two dir calls?
Do you just need the filenames, or do you actually need file info as well? If it's just the names, the simplest way (I think) i...

más de 15 años hace | 0

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Plot p.d.f. from m.g.f
Sorry, this question got a bit lost when Answers had a glitch a few days back... I hate to state for sure that there's no fun...

más de 15 años hace | 0

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Failure in initial user-supplied objective function evaluation.
This is a very common issue. These MATLAB functions require a handle to a function of one variable. Hence "too many input argu...

más de 15 años hace | 1

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How to display a zoomed image in GUIDE
I assume you've set the two axes to be the same size, and you've loaded the image, so you can get its dimensions (m-by-n, say). ...

más de 15 años hace | 2

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Simple Imaging questions , dealing with matrix maniuplation
OK, so I'm trying to walk the line between helping you and doing your homework... so, how about this? I'll step you through sol...

más de 15 años hace | 0

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How to obtain p values for all pair-wise comparisons from the multicompare() function?
Not currently, according to <http://www.mathworks.com/matlabcentral/newsreader/view_thread/238957 this discussion>.

más de 15 años hace | 0

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Need help with looping a simple linear system
# I assume this is some kind of hw/exercise. If not, use a MATLAB root-finder, rather than writing your own. # As proecsm notes...

más de 15 años hace | 0

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Vector Time Conversion to Serial numbers
Serial dates are in units of days, so you can add fractional days to them. So you should be able to take the time, divide by 24...

más de 15 años hace | 0

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Simple Imaging questions , dealing with matrix maniuplation
Start by working out how to do it on paper/by hand for a very small example (2-by-4, etc). Work out the rule/formula for how th...

más de 15 años hace | 0

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Simple Matlab Random Number Generation
How about a brute-force approach? ntot = 0; n = 10000; x = zeros(n,5); while ntot<n r = rand(100,4)-0.5; ...

más de 15 años hace | 1

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Connecting Points in a Scatter Plot
Focusing just on the problem at hand, I'd suggest # changing line 126 to |Thrust(mdotfuel+1,mach,Alt) = mdotfuel*(U8-Uo);| #...

más de 15 años hace | 0

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