Matlab

Closed-loop optimal control problems with the level set toolbo
Has any one used the level set toolbox for solving closed-loop optimal control problems via the HJB formulation. Any pointers along this line will be appreciated. Thank you. ... 2 Mar 2010 12:22

elliptic iir filter, boundary condition, tailing off
Hi there, The code below shows my attempt at designing an elliptic IIR bandpass filter which is meant to process a real time signal. it is a concatenation of a low pass and a high pass filter. The problem is the output signal from the filter tends to "tail off" towards the end of the signal. From my research so f... 2 Mar 2010 11:13

Gui
Hej, I have made Gui for excel data ploting in Matlab. I did it using the video of Mr Doug (http://blogs.mathworks.com/pick/2007/08/13/video-series-reading-excel-data-into-matlab-with-a-gui/). The gui works fine but the command wndow gives following error. mainGui>pushbuttonLoadXLS_Callback at 130 setPopupStri... 2 Mar 2010 11:13

PTB 'DrawText' over several lines
Hi! I want to display a sentence on the PTB screen using the 'Screen' subfunction 'DrawText'. The sentence is to long to fit in one line only. How can I use the 'DrawText' Function to automatically display the sentence over several lines? I do not want to split up the sentence manually to simply write several... 2 Mar 2010 11:13

fmincon not updating
Hi, I try running fmincon on a problem I have. I want to optimize the vector u contianing about 150 variables. I have specified a cost function (cost(u)) and a function returning my nonlinear constraints(constraints(u)). I run it like this: u=fmincon(@cost,U0,[],[],[],[],[],[],@constraints,options); When I ru... 2 Mar 2010 16:56

can't delete the whole column including NaN and nomovement data return column
%in order to cut the whole columns which contain NaN, i done by : ret=price2ret(data,[],'periodic'); sumret=sum(ret); findnan=isnan(sumret); [m n]=size(findnan); for i=1:n; if findnan(1,i)==1; ret(:,i)=[]; else end end %it shows ??? Index of element to remove exceeds matrix dimensio... 2 Mar 2010 10:05

better way to do this?
Hi, I have an RGB image in the form: N-M-3 I would like to rotate the view, so to make it M-N-3 However, if I use rot90, or transpose, it does not work as this is a 3D matrix and those methods are for 2D. Any way to achieve this by not having to rotate each of the 2D individual matrix? thanks. ... 2 Mar 2010 10:05

griddata
I am analyzing some data with matlab. I have a bunch of points in space that must form some surface. When i plot them using griddata and surf function i get some teeth-like things in some parts of the surface instead of a, well, normal surface. Maybe the problem is that in this part the surface is almost vertical, and ... 2 Mar 2010 08:58

Making a box with patch
Hello all, I am trying to make a box using the patch-function. All examples have things like: x = [0 0;0 1;1 1]; y = [1 1;2 2;2 1]; z = [1 1;1 1;1 1]; These are coordinates, if I am correct. But how do I interpret these values. Do I read them from the top down, or left to right? And what do the semicolons mean... 2 Mar 2010 08:58

hold on in a handle?
Hello, how could i plot 2 graphs in on plot? I use only the handle for speed up :-). I want somthing like that: hold on; plot(x1,y1); plot(x2,y2); hold off; But that: hold on; set(handles.plot1_m, 'XData',x1 ,'YData', y1); set(handles.plot1_m, 'XData',x2 ,'YData', y2); hold off; doesn't function... ... 2 Mar 2010 12:22