Using "find" for finding decimal values
MiauMiau, the numbers you are looking for are obviously different from the short format you see. Do this: [~,idx] = min(...

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Here is a simple example. You should be able to adapt the concepts to your GUI or whatever. function [] = gui_timer() ...

Changing the colour of a plot
load Data S = surf(x1, y1, z1); % Original to compare figure S2 = surf(x1, y1, z1); set(S2,'facecolor','interp','C...

How to do set subtraction
a = 1:3; b = 2:5; c = setdiff(b,a)

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How to vectorize a find
The last statement you show _is_ vectorized, so the question is ill-posed. I think what you are asking for is a way to speed up...

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Where is a list of eventtypes for listeners?
_Usually_ I think MATLAB has excellent documentation, but there are occasions when I have to pull my hair out looking for someth...

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How to constantly update a plot off of a slider being pulled
Yes. function [] = slider_plot() % Plot different plots according to slider location. S.fh = figure('units','...

If , while with or
Did you look at the documentation? doc while In the documentation are examples. a = 1; b = 10; c = 20; d...

Does logical indexing have a direct inverse?
Simple example: A = randperm(4); X = [0 1 0 1] B = A(X~=0) clear A Now _just look at_ X and B. By looking at j...

How do I plot specific values from a matrix
idx = A(:,4)==3.7 & A(:,2)==1.2; plot(A(idx,1),A(idx,5)) Beware floating point issues!

Correction function for graph
Use the SURF function to make a surface. doc surf

UICONTEXTMENU will not appear on GUI

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Compare two vectors for similarity
What is the criteria for 'almost similar' in your application? 90% same exact values? 90% of the values in one vector within 9...

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For Loop runs too many times
I am confused about your question. You say you want to have C be a 2-by-3-by-4 array at the end of the loop, correct? That is ...

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Product of probabilities by group
Here is another method. This might work best if you have groups in increments of one because it uses the group number as the in...

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Predefined variables k, z? Ans Help
k is a integer constant: Any integer k gives another solution. This is common with periodic functions. z is probably any comp...

GUI differences among different users
Set the renderer of the GUI figure to painters or zbuffers and try again.

Gamma function in MATLAB
syms s y I = int(s^(1/40)*exp(-(y-5)^(2)/(2*s^2)),s)

How does one add multiple objects at random postions?

Problem with datestr e datenum
>> data_even = {' 31/10/2012' ' 31/10/2012' ' 01/11/2012' ' 01/11/201...

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In a MatLab plot, when is 'box on' the default, and when is it not?
I see you were not just using the PLOT function. The STAIRS function sets the box to on (line 99 in stairs.m). Thus as I s...

Select a radiobutton.Calculate derivation or integration.
If you put the code in SelectionChangeFcn, then the integral or derivative will be computed as soon as the user changes radio bu...

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how can i determine whether a matrix of any size is sorted or not (by rows and by columns)?
See the help for the ISSORTED function. help issorted

Need help with edit box in matlab gui
n = str2double(get(handles.edit2,'String'));

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Vectorize sum of discount rates
R = 5; cumsum(R.^(0:4))

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Matlab out of memory when use index to access an element of an array
You are probably seeing copy-on-write behavior. When you first assign the value of rows to cols, MATLAB doesn't actually create...

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how to simplify multi- if statement
STR = char(65:90) KEY = randi(10000,1,length(STR)) But what are you going to do with these that you would need an IF blo...

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Subscript indices must either be real positive integers or logicals.
In that line you are indexing k and a as if they were variables. you need to insert a * in two spots. You have 'a(' instead of...

Plots Stacking when it is unwanted.
Your description of the problem is not clear. Do you want to put a: hold off as the last line of this section of code?

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