Matlab

Matrix To Vector
I have a matrix of mean diameters of size 15X26. The rows are defined by longitude and columns by latitude. How do I create 3 vectors lat, lon, and diameter from this matrix? Thanks ... 14 Jul 2010 08:45

problems compiling the matlab engine
Hey guys, I have some problems to build the connection from JAVA to MATLAB by using JNI (see also here http://www.mathworks.com/matlabcentral/newsreader/view_thread/286771#762138) . Now I thought mayby I did somthing wrong during the compilation process! Th following link "http://www.mathworks.com/access/helpdesk/h... 14 Jul 2010 08:45

help with nonlinear constraints function using fmincon
Dear all, I have a problem with the constraint function in fmincon. The error message is: ??? Error using ==> fmincon at 612 FMINCON cannot continue because user supplied nonlinear constraint function failed with the following error: Error using ==> myconstr Too many input arguments. Error in ==> Optim at... 14 Jul 2010 12:04

help with nonlinear constraints function using fmincon
Dear all, I have a problem with the constraint function in fmincon. The error message is: ??? Error using ==> fmincon at 612 FMINCON cannot continue because user supplied nonlinear constraint function failed with the following error: Error using ==> myconstr Too many input arguments. Error in ==> Optim at... 14 Jul 2010 08:45

error when saving: unable to write to MAT-file, File may be
"Andrew Fiedler" <afiedler8(a)gmail.com> wrote in message <hsh064$kbr$1(a)fred.mathworks.com>... I'm having the same problem with MATLAB R2009b (7.9.0.529). I seems completely random when it can save mat files and when it won't. Saving files to CSV in the same folder location works, and is a work-around for now but I ha... 14 Jul 2010 07:40

Vectorized arthmetic operations
Hi 1) .* is an array operator (element-by-element operator). Now, if a=2 and x=[1 2], then why am I allowed to calculate a.*x? I mean, it is an element-by-element operator, so it should give me an error. 2) Furthermore, * is a matrix-operator (according to Support - Code Vectorization Guide). If that is the case,... 14 Jul 2010 10:56

resid function - System Identification Toolbox
Hey Anthony, Since you use ordinary residuals for analysis, why don't you just substract the response under consideration (the original data) from the fitted values (the AR model response). That way you don't need to call any function at all. You can also do it in the opposite direction (data - fitted_values) or jus... 14 Jul 2010 07:40

Staged Linear Regression
I have a set of test data (from material stress rupture tests) which when plotted gives a scatter graph with a strong positive correlation. It is quite obvious that there is a line of best fit, which is easily found using linear regression, for examply using the R2 value in Excel. However, in actual fact, 2 lines of be... 14 Jul 2010 12:04

Axes font can affect Legend font, why?
Dear all Here is an example code: plot(rand(10,2)); hl=legend({'data1','data2'}); set(hl,'FontAngle','normal'); % set legend font to normal set(gca,'FontAngle','italic') % set gca axes font to italic then, you will see that Legend font is 'Italic', not 'normal'. My matlab version is2010A, so this phenomena is ... 14 Jul 2010 09:50

using if else condition in fsolve
I want to solve a set of nonlinear equation where there is an if else contion on one of variable . when i tried using if else condition in definition of myfun it is returning error. Here is the myfun function F=myfunt(x) x1=12; y1=2*tand(10); w=15; x2=x(1); y2=x(2); F=[x2-x1-w*cos(theta);y2-y1-w*sin(thet... 14 Jul 2010 12:04