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problem with time step in ODE ?!
I don't know exactly what you're trying to do, because your code is invalid in the last line of |F10| and in your call to |ode23...

14 years ago | 0

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one time Multiple data extraction from exel files for analysis
This basically just stacks all the spreadsheets on top of each other, adding a first column with the number, into one big cell a...

14 years ago | 0

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Non linear fit
Hmm... I thought I'd answered before, but apparently not. Oh well. As the cyclist says, the very tight spike in the middle mak...

14 years ago | 0

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How do I fix a improper index matrix reference error
A few things that will help us diagnose the problem: # Format your code # Show the exact error message so that we know on wh...

14 years ago | 0

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how to label lines on a graph
How about overlaying text on the graph, next to the lines? line(x,y) % or plot(x,y) with a hold on text(max(x),max(y),n...

14 years ago | 4

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input argument is undefined
When you say "run the function", what do you mean -- you hit F5 or push the save/run button (with the "play" icon) in the Editor...

14 years ago | 0

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Predefined "Settings" in R2011b
Where and how are you trying to reload them? In 11b I get the following: >> which Settings -all Settings is a built-in met...

14 years ago | 0

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Answered
changing the X tick label
If |a| and |b| are numeric, then lbls = strcat(strtrim(cellstr(num2str(a(:)))),'-',strtrim(cellstr(num2str(b(:))))) set(...

14 years ago | 0

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Not enough input arguments
From your comment to Jan: "then run it"... If you are running it as a script then it will give this error message because |te...

14 years ago | 1

14 years ago | 0

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having one "for" loop instead of two
As Walter said, you can't loop over two variables in the same |for|-loop. So the real question is: *why* do you want to do this...

14 years ago | 1

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do not have the genetic algorithm function in the global optimization toolbox
If you're a student, then there's a pretty good chance your school has a license for Global Optim TB. You'll be constrained as ...

14 years ago | 0

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strfind issue
As Daniel says, there must be more going on. Can you copy the code directly? |strfind| returns the indices; if there are no ma...

14 years ago | 1

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14 years ago | 1

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Nesting loop reiterating wrong code
Nothing inside your outer loop (except the indexed assignment at the end) references the loop variable |f|, so you're doing exac...

14 years ago | 0

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How to add letters to the end of words in a string.
|strcat(wordbank,'s')|

14 years ago | 7

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loading .txt file
If you don't need individual variable names then I'd probably go with the simplest approach of data = dlmread('data.txt','',...

14 years ago | 0

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Baseball
The problem is really in the math. |fzero| can't find a zero from the given initial guess because your function has a nasty sin...

14 years ago | 0

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Jacobi Iteration into Gauss-Seidel for Linear Algebra course
Your loop in |j| is effectively |1:(i-1)| then |(i+1):n|. The difference between GS and Jacobi is whether you use |x| or |xold|...

14 years ago | 0

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Passing arguments into fsolve without using globals
1) Rewrite |myfun| to take two inputs: function Z = myfun(y,REF) ... 2) Use an anonymous function handle to make a fu...

14 years ago | 15

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how isolate?
Can you clarify your question? If you want to extract portions of |x| you can just index: x(1:5) x(6:10) x(11:15) You...

14 years ago | 0

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When to use find, loops or if?
Two things I notice in your code: # you're not using |j| to index into |rh| and |ch| -- is that intentional? # |find| is return...

14 years ago | 1

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Answered
fminbnd finding wrong minimum point, please help
Don't expect |fminbnd| to do what you'd do in a Calculus class: look for local minima in the interval and compare with the endpo...

14 years ago | 1

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Comparing two sets of coordinates
Can you please show your code? The approach you describe works in less than a second (~ 0.6) on my computer, with n = 10000. C...

14 years ago | 1

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14 years ago | 0

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Answered
ode step
Do you mean something like an internal variable in the rate equations? Not exactly. But why would you need this? The ode rate...

14 years ago | 0

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Simulate a plain Call- and Put Option
It looks like there should be a function |call| that takes a bunch of inputs and returns the call price. Unless that function i...

14 years ago | 0

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Distance between elements of two matrices
I think this is what you're after. It's a bit brute-force, but I can't think of a neater, vectorized way. % Make some ma...

14 years ago | 0

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Answered
how can i plot all for loop's values
Why are you using a |for|-loop at all? These are all vectorized operations. th=-25:.1:50; fai=atand(((750+450.*sind(th)))...

14 years ago | 0

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Y-axis lim with Bar/Line overlay
figure; h_bar = bar(_data(:,1),Y); set(gca, 'XTick',_data(:,1)); set(gca, 'XTickLabel', _data(:,1)); h1 = gca; ...

14 years ago | 0