Synchronise real time to simulation time
If you use the "sim" command to run a simulink model, via matlab code, you can use tic & toc to measure how long it took to comp...

6 years ago | 0

average of each two vectors of a matrix
(x(2:2:10,:) + x(1:2:9,:))/2 Thats the "simple" answer. There are other methods that are more flexible, but which need a lit...

6 years ago | 1

| accepted

Undefined function 'times' for input arguments of type 'cell'
When you want to access the contents of "M", you need to access it like this: M{:,1}

6 years ago | 0

| accepted

'for loop' for beginners?
The error is because you're trying to get the user to enter a list of numbers with a function that only allows ONE number to be ...

6 years ago | 0

Best way to nest parfoor in for loops?
There are a few things to consider - 1. Is each loop iteration entirely independent of the prior ones? - If not, you can't ...

6 years ago | 1

| accepted

help with this basic matlab code..
The answer you're looking for is actually really really really horrible: Mean_process_cut_cut_image_posi = rot90(cut_2,3); ...

6 years ago | 0

generate random numbers with exact mean and std
A sequence of equal numbers of -1 and 1 has a mean of 0 and a population standard deviation of precisely 1. That sequence of...

6 years ago | 0

Create a pattren to execute specfic commands
B = [C{1,1:5}];

6 years ago | 1

| accepted

Problem with logical indexing with arbitrary indices
aarray(find(r(1,1)==1)) = bindices(end); A. That's not logical indexing. r(1,1) == 1 can only return a scalar logical ...

6 years ago | 0

what's the difference between handles and hObject?
handles is a structure holding ALL of the handles for the GUI. hObject, is JUST the handle for the GUI object used. eventd...

6 years ago | 3

Performance of structures as function arguments
Yes. The "Good reason", is that an equation, say, L = 1/2 * rho * Vel.^2 * area * (alpha*P1 + P0); Is far quicker to...

6 years ago | 0

| accepted

how to value nan number in a vector? and how to do the same calc in a 2d matrix?
You've got an x & y vector, so this would remove the NaNs: nans = isnan(Y) || isnan(X); Y(nans) = []; X(nans) = []; ...

6 years ago | 0

Split a matrix into a two submatrixes by a condition
This is the "simple" answer: male = ex3(find(ex3(:,1) == 1),:); female = ex3(find(ex3(:,1) == 0),:);

6 years ago | 0

How can I cast 4 octets in 32bit signed integer type ?
typecast(uint8([1 2 3 4]),'int32')

6 years ago | 0

The role of singleton elements in calls to the zeros function.
Matlab only really needs to know which dimensions are "nonsingular". - A scalar has infinite dimensions, all with a size of 1. ...

6 years ago | 0

Missile guidance system not reaching target
You're missing something. Heres a multiple choice question that'll suit- Do you want your missile to explode? A. afte...

6 years ago | 0

Need help figuring out how to save values
As it's homework, I'll just say the keyword you want. persistent

6 years ago | 0

how can remove corner of binary image??
If you repeatedly erode & dilate (imerode & imdilate) the image you should get close to what you want if you use the right "neig...

6 years ago | 0

| accepted

Transfer and execute function
I don't quite get what you're asking: Are you saying that you want to use a variable function for something? In which case yo...

6 years ago | 0

How to keep precision of Math Operations?
You are probably getting more than 2 decimal places of "accuracy". You're probably getting 15 or 16 significant figures worth of...

6 years ago | 0

Is there any way to do an operator on a specific region
A simple way is to simply chop it off: % (Tune the numbers for what you need) LowerLeftquad = my_image(74:end,1:30); % ass...

6 years ago | 0

How can I integrate something times a function file?
This example uses "sin", instead of whatever function you're using to get your integrand. to_be_integrated = @(x)(sin(x).^2*...

6 years ago | 0

Count equal values in multiple matrices
If you can concatenate your matrices in the 3rd dimension: x_oth = X2; x_oth(:,:,2) = X3; ... Then you may be able ...

6 years ago | 0

Reading text from an excel file and populating a matrix with those values.
[numbers_only text_only both] = xlsread(filename,sheet_4); Then one of: network_station_coordinates = numbers_only; % ...

6 years ago | 0

| accepted

How to change the name of variables using a loop?
Cells ARE the way to go. Structures would be preferable to what you want mystruct.description = 'blah blah'; mystruc...

6 years ago | 1

Goto command in matlab: Undefined function 'goto' for input arguments of type 'double'"
Ok, so you've downloaded a function "goto" from the file exchange, and it's probably just using "eval" on every line from the on...

6 years ago | 1

How do I find the Nth high number in a matrix A ?
values = 1:500; sorted = sort(values,'descend'); sorted(5)

6 years ago | 0

Make a connection between MATLAB-VISUAL BASIC via ActiveX as a bridge,
Using activeX is a bit of a pain. HOWEVER, if you look at the code for xlsread/xlswrite, you'll see that there is a whole load o...

6 years ago | 1

| accepted

getting error of not enough input argument?
gumbelpdf, gumbelcdf, gumbelinv are all functions that we don't have, so we can only say how to fix your error properly gumbe...

6 years ago | 0