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Hi everyone,
a very simple question but due to my limited knowledge of MATLAB commands could not be solved so far so I am sharing with you experts to help with that. I need a solution to combine all the data in the matrix which each array at each row to b >> more

Original post by Behnam
Last post by Steven Lord - 22 Sep 2014 - 6 replies


Can anyone sugggest me how to do uniform sampling inside a torus using inversion method?

Original post by RAVI SHANKAR
Last post by Roger Stafford - 22 Sep 2014 - 4 replies


I have to be able to write MATLAB Code to display numbers 2 – 100 and determine whether or not each number is; even or odd, and prime or composite. What is the best way to do this?

Original post by Garrett Higgins
Last post by dpb - 22 Sep 2014 - 2 replies


i am new to matlab..i have a question, how to create a row or column vector of string using for loop??
myArray=[jwalin shah ramesh maheta]




Original post by jwalin
Last post by dpb - 22 Sep 2014 - 1 reply



I have the following code that generates a figure:

                   phipsi_mat = [ -64.947 -38.895
      -60.087 -46.883
      -61.678 -43.049
      -81.605 4.4343
      -62.577 -43.04
      -92.124 122.76 >> more

Original post by Alejandro
Last post by dpb - 22 Sep 2014 - 1 reply


Hi All,
I want to download all the files in the following address
and I would like to know if any Matlab command would do it automatically, as opposed to having to cl >> more

Original post by Laura
Last post by Laura - 22 Sep 2014


hi guys..
i wanna ask you somthing..
i m using MATLAB R2008a and i have a problem with it..

matlab returns " cos(pi/2) = 6.1232e-017" and also " sin(-pi) = -1.2246e-016 ".. and this make me crazy.. both must be zero..

do you know how to fix th >> more

Original post by muhaha
Last post by Steven Lord - 22 Sep 2014 - 15 replies


Hi, I need to make a program using GUI that allows me to open and display two images along with the following requirements

1. I could be able to open basic image formats (BMP, FIF, JPEG, etc)
2. the program may be run from GUI
3. I must be having control >> more

Original post by Kashif Javed
Last post by Steven Lord - 22 Sep 2014 - 1 reply


What is unbalanced here?
[~, nt] = size(t);
the error says:Expression or statement is incorrect--possibly unbalanced (, {, or [.
I am using MATLAB 7.6
How to solve it?
[N,nt]=size (t); doesnot work either

Original post by sadiyah sabah chowdhury
Last post by Steven Lord - 22 Sep 2014 - 1 reply


Hi all,

I want to generate a C code from a Matlab code.
It seems that I should use Matlab coder but my problem is I can't find it in my matlab after installation.

How can I install it to start with the transformation Matlab-C.
Is there a trial version >> more

Original post by MARIEM
Last post by Steven Lord - 22 Sep 2014 - 1 reply


I am trying to enter f(t)=sqrt(t) into MATLAB, but I am getting this error: Subscript indices must be either real positive integers or logicals. How do I fix it?
Thank you very much.

Original post by Mario Guerra
Last post by Steven Lord - 22 Sep 2014 - 4 replies


Hi folks,

Very new to matlab and having an uphill struggle. Mostly doing this as a learnign excercise but does (later down the line) have some realy work application.

Ive some position data in the format of vectors (Ithink) and have a time an x value an >> more

Original post by Craig
Last post by someone - 22 Sep 2014 - 1 reply


Hi- I want to perform regressions with initial parameter values. REGRESS doesn't support this, but MVREGRESS seems to, so I'm trying to use that function.

From the help, I believe REGRESS(y,X) and MVREGRESS(X,y) should be equivalent when y has only 1 di >> more

Original post by Dan
Last post by - 22 Sep 2014 - 4 replies


hi all
            i am trying feedforward neural network for predicion. I have trained the network. now i want to use this trained network for prediction. But how i should call the trained net in my code for prediction. One more thing, once the natwork i >> more

Original post by jayashree gawade
Last post by Steven Lord - 22 Sep 2014 - 8 replies


I used ode45 to solve a function of type x-prime = f(x) where x = [x1; x2; x3; x4].

ode45 provided me with [t, x].

First question: can ode45 actually return a function x(t) or does it only return values of t and x?

Now I have another function E = f(x) >> more

Original post by Joshua Levin
Last post by Torsten - 22 Sep 2014 - 1 reply



I need to decompose a 3D augmented affine transformation matrix into the rotation, scaling, shearing and translation components.

Does Matlab come with this functionality or can someone point me in the direction of code to accomplish this? Otherwis >> more

Original post by Dan Golding
Last post by Dan Golding - 22 Sep 2014 - 2 replies


I want to integrate the discrete function a*x_n*(1-x_n) from n*r to t, where t lies in the interval [n*r,(n+1)* r], (take r=0.005)
> > where a:0:0.001:4 and n=0,1,2,3,...., and
I have tried the following
% define the vector of colors, to plot the data >> more

Original post by Sanaa
Last post by Sanaa - 22 Sep 2014



Please help. I spent a lot of time searching for the solution but could not get it.
I am using MATLAB to plot the centrode of a kinematic linkage. I used fsolve to solve the non-linear set of equations. But when I change the equations slightly I alte >> more

Original post by Prasanna R N
Last post by Torsten - 22 Sep 2014 - 1 reply



I would like to make a 3-D pie chart (pie3) using Matlab:

1. The data is:
X = [11419 7788 6434 5103 395 75];

2. I would like the pie chart to show the percentage of each of the
sector, with fontsize 20.

3. I would like to label each of the sector, >> more

Original post by Alan
Last post by Andrew Callaway - 22 Sep 2014 - 7 replies


I used the "Close all documents" function in previous versions of matlab; does this exist in 2012b? It's painful going through the open m-files at the start of a session closing them one at a time....

Paul Macey

Original post by Paul Macey
Last post by Daniel - 22 Sep 2014 - 4 replies


Hi, first of all I want to say hi and apologise for my english, I'm really trying to make myself clear here but I know my english level its far from great.

Well, I'm in information theory subject this year in college, and they proposed a series of proble >> more

Original post by Sergio
Last post by Sergio - 22 Sep 2014


Dear matlab friends,

Wishes to all.

I have 247 data of one input vector and one target vector. this data
can be categorized as train,validation and test ratio (60%,20%and 20%)

Number of neuron used in hidden layer is 4.
Divid >> more

Original post by Murugan Solaiyappan
Last post by Greg Heath - 22 Sep 2014 - 16 replies



I am developing a new model in simulink and I want to a include a string (a filename) as an input of a subsystem.

In that way, my subsystem is going to open a file with a defined name.

How can I do that?

Thank you,


Original post by Cristiana Bonifácio
Last post by Cristiana Bonifácio - 22 Sep 2014


Hi all,

Please help me with this question, How can i add a user defined
function into the library of inbuilt function and use the user
defined function as inbuilt function?

What is the path or directory of inbuilt function.

Your help will be appreciate >> more

Original post by Pranabi
Last post by Benjamin - 22 Sep 2014 - 2 replies


I have to use from "extrapolation methods " (such as Levin, shanks or ...) to accelerate convergence of following infinite integral tail:
my infinite integral tail = | [ x*besselj(0,x)/sqrt(k^2-x^2)] >> more

Original post by ghasem
Last post by Torsten - 22 Sep 2014 - 5 replies

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