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When I enter :
[x,y] = solve('x+2*y=4','2*x–y=3')

Matlab says :
Error using solve>processString (line 365)
' 2*x–y=3 ' is not a valid expression or equation.

Error in solve>getEqns (line 286)
      eqns = processString(eqns, v, vc);

Error in solve >> more

Original post by Tali Natasha

Last post by Nasser M. Abbasi - 31 Jan 2015 - 1 reply


Hello all !

I am trying to use the continuous wavelet transform to view a signal in time-frequency domain. I am trying to use scal2frq to do get an approximate frequency range. However, when I enter different values for the scales, my signal seems to con >> more

Original post by Peter

Last post by Jannis Ahlers - 31 Jan 2015 - 1 reply


Is there a smart way to repeat the rows of a 6 row-matrix (for example), such as the new matrix consists of [row1; row2; row2; row3; row3; row4; row4; row5; row5; row6] of the original matrix?

Thank you,

Original post by Elnaz

Last post by Nasser M. Abbasi - 31 Jan 2015 - 1 reply


Hi There,
I'm using MATLAB 2014a on Ubuntu and I have not been able to change the size of the text for axis tick marks. I have tried the following command and verified that it works on matlab 2013a on Windows:


Is this a problem wi >> more

Original post by Gene Polovy

Last post by Gene Polovy - 31 Jan 2015


Good evening,

I have a large cell array of various data types/lengths. I am trying to use "xlswrite" to export this cell array. However, some of the cells contain date strings that Excel interprets as numbers. How could I export the string and not have E >> more

Original post by Dan

Last post by Dan - 31 Jan 2015


Hey everyone:

 I have a question of communication between Java and Matlab Simulink Stateflow.

 My goal is:
 Have a java application and a Matlab Simulnik Stateflow run parallel on the same machine.

 Have communicating between Java and Matlab Simulink >> more

Original post by Andrew Ou
Last post by Andrew Ou - 31 Jan 2015


Hello all
     I have 6GB of data(CSV format) in a dataset. However i am unable to load/import the data into Matlab. Kindly help??

Thanks in advance

Original post by arjun raj rajanna

Last post by arjun raj rajanna - 30 Jan 2015


A meshgrid in 3-dimension can be written as
[X,Y,Z] = meshgrid(1:n,1:n,1:n);
The resultant X is same as the X obtained using "repmat" as
X = repmat(1:n,n,1,n);
Similarly Y obtained using meshgrid is same as
Y = repmat([1:n]',1,n,n);
Is there any way to ge >> more

Original post by kumar vishwajeet

Last post by Steven Lord - 30 Jan 2015 - 1 reply



Could you please help me to read,

10:01:00.01 0112-0453-0432 0982
10:01:00.11 0272-0264-0382 0678

I want them as
10 1 0.01 112 453 432 982 for the first line and so on.

I used textscan to read them, but I could not get them as I want. >> more

Original post by
Last post by dpb

- 30 Jan 2015 - 1 reply


I am a fairly new user, I am confused by the following code. Could anyone explain what the second line really represents?? I have inputed fs:1.5, which gives the output "Empty matrix: 1-by-0". then it makes no sense to divide 0:1 or [0 1] by fs:1.5 >> more

Original post by Riyasat

Last post by dpb - 30 Jan 2015 - 1 reply



I want to plot the colormap of N points.

I have a two dimensional matrix with N rows and four colums. The first three columns of the matrix contain X, Y and Z coordinates of these points. The fourth column denotes the strength of these points. I >> more

Original post by Muhammad

Last post by dpb - 30 Jan 2015 - 1 reply


I have one problem in tomlab, is a mip.
Ican difeni one funcion, and before in cretiria mlpAssing incorpored the funciond:
e.g: Prob = mipAssign(@my_f,...............);

I try but don't run!!!!

Original post by Ricardo Faia

Last post by Ricardo Faia - 30 Jan 2015


If i open a file with a machineformat specified:
FidOut=fopen([Pathstr '\' Name '.SGY'],'w',Mf);

Do i then need to specify all fwrite commands with the machineformat or does is know from the open file?

Original post by exosceleton

Last post by dpb - 30 Jan 2015 - 1 reply



I want to toggle a hg-property, which can be "on" or "off" by means of an inline function (i.e. without using a separate m-file !!!).

Suppose the Handlevisibility of a figure. I can see, how this can be done with a separate function:

>> set(gcf, ' >> more

Original post by Sebastian Hölz

Last post by Sebastian Hölz - 30 Jan 2015 - 2 replies


I'm attempting to get the image acquisition toolbox to work with an imperX camera link frame grabber.

The problem I am having is that my camera outputs 640x512, 14 bit monochrome images, but matlab will only read them in as 640x480, 8 bit images. The >> more

Original post by Matthew

Last post by Matthew - 30 Jan 2015


Hi all, I've looked around for ages but cannot find a different solution. I fear there isn't one.

Problem: I have a tool that batch processes data and creates loads (00's) of figures. I don't want them flashing up and getting in the way while the user is >> more

Original post by Oliver

Last post by Yuri Geshelin - 30 Jan 2015 - 24 replies


I want to plot two variables with the same y-axis dependency, but I cannot make it work. It is no problem for a line plot, but as soon as I try the plot function or scatter function, it will not let me add an extra x-axis on top of the graph. Instead in s >> more

Original post by Thor

Last post by Steven Lord - 30 Jan 2015 - 7 replies


Guys I'm working to create two video axes in a single gui. One is to start the camera and the other one to show the transformed video. I've designed the gui but it's not working. How to specify the code to plot it in the axes 2?

Thanx in advance. It wou >> more

Original post by Guru

Last post by Steven Lord - 30 Jan 2015 - 2 replies


Equation: 4X+2X-Y=2X+2, find the value of Y at X=2.
We can solve the equation after rearranging it as, Y=4X-2;
 Is it possible to solve the equation in matlab without rearranging??

Original post by R7 DR

Last post by R7 DR - 30 Jan 2015 - 3 replies


I have a cell array:
results = {5,2};

that is:
results =

    [1x5 double] [1x1 prob.NormalDistribution ]
    [1x5 double] [1x1 prob.tLocationScaleDistribution]
    [1x5 double] [1x1 gmdistribution ]
    [1x5 double] [ >> more

Original post by simo borto

Last post by dpb - 30 Jan 2015 - 6 replies


Hello, I'd like to receive a report from Matlab but sendmail doesn't
work (it seems) with any server SMTP that needs authentication. How
could I fix this problem? I use Matlab 7.0
Do exist any free Smtp without authentication?

Original post by mutaforme da Google
Last post by Kay

- 30 Jan 2015 - 11 replies


I have just installed R2014b on a Mac OS 10.9.4 system. After opening I have an error message in the command window:

MATLAB:dispatcher:loadLibrary Can't load '/Applications/': dlopen(/Applications/MATLAB_ >> more

Original post by Pascal Azerad

Last post by Pascal Azerad - 30 Jan 2015 - 2 replies



I am a new Matlab user and I am trying to plot an ellipse contour. I define a function like this:
function ellipse_function(gamma,Psi,xi,Theta,col)
x = linspace(-1,1);
y = linspace(-1,1);
[X,Y] = meshgrid(x,y);
Z = (sin(xi).^2).*(1-X.^2-Y.^2)-((Th >> more

Original post by Mari Alqarni

Last post by Mari Alqarni - 30 Jan 2015


I simply want to write the DOORS synchronisation settings (RMI) of a model by script, but in the documentation I only found a way to do this, while actually synchronising. This I definitely do not want as this is intended to be part of a check/autocorrect >> more

Original post by rofl

Last post by rofl - 30 Jan 2015


Dear all,

Unfortunately my maths is not very strong at the moment but I'm not
completely useless. I have been trying to compare some simple wireless
beamformer simulations.

I have successfully recreated a Signal to leakage ratio (SLR)
beamformer simulat >> more

Original post by
Last post by shehzad.nust@gmail.c... - 30 Jan 2015 - 7 replies

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