Matlab

Converting m file to pcode error...
Please help....I have a GUI m-file that I've converted to P-code using 'pcode GUIFILENAME'. When I try to open the p-file, I get an error saying 'M-File associated with p-file not found'...I'm not sure why that is since all files are in the same folder. Any thoughts why this may be happening? Thanks, J ... 9 Jul 2010 18:19

Clearing handles
My GUI has multiple imEllipse objects, the handles for which are all stored in handles.rois. I keep track of how many ROIs have been created by incrementing a variable handles.nrois every time one is constructed. My GUI has a reset button which is meant to remove all of these ROIs and remove their handles. I currently ... 9 Jul 2010 18:19

remove duplicate rows in sparse matrix
Hi all, I have Ax=B where A and B are sparse. I want to reduce this so any row ax=b is unique, but I don't have the resources to make A and B full first. If I could, I could say Afull = [full(A) full(B)]; [newmat,index] = unique(Afull,'rows','first'); repeatedIndex = setdiff(1:size(Afull,1),index); Af = full(A... 9 Jul 2010 17:12

Fourier descriptor to compare curves 3D
Hello, I'm working on an 3D face recognition problem. Each face is characterized with a 3D curve 3D, so i have to compare theses 3D curve. To be invariant of the origin point i would use Fourier descriptor to compare theses 3D curves. Please help me . Best regards. ... 13 Jul 2010 14:13

variable conversions
I have variables called ExcelFile2. For example, ExcelFile2 = 01_3-30-10_120035 whos ExcelFile2 Name Size Bytes Class Attributes ExcelFile2 1x17 34 char I want to loop through a series of these files and see whether they match or don't match clips. For ... 9 Jul 2010 18:19

Check if .txt is empty
Hi, Very simple/beginner question, but I'm having trouble finding a nice way to do this. I'm looking to check if a .txt is empty in append mode. I have a function that writes to the file, but if it's empty a header should be written first. I just need a good way to check if the file is empty. Thanks a lot ... 9 Jul 2010 17:12

Display/find points where a 3D Patch object intersects a plane
I have a complicated 3D patch object (an airplane). I am trying to take a cross-section of it. Meaning I would like to see a 2D plot of where the patch intersects a plane. The data I am using to create the patch is in the form of xdata,ydata,zdata as in the example below: [x y z] = sphere; h = patch(surf2patch(... 9 Jul 2010 18:19

Variable-Gain Altitude Control
Hi all, I'm supplementing an F-16 simulation with an automatic control system. The control theory is fairly straightforward, but I'm struggling to get a variable gain PID controller working, specifically for climbs/descents. Example: I need a low gain for large climbs of say, 10000 feet, and high gains for small c... 9 Jul 2010 16:05

Murphy HMM problem
"PaulN" <paulnicholl(a)hotmail.com> wrote in message <1146737339.293065.111490(a)u72g2000cwu.googlegroups.com>... Thanks Maria. I'll play about with those values and see if it fixes things. I would have hoped though that, if I used stupid values, the HMMs would have given low recognition rates, rather than... 15 Jul 2010 17:37

contour color question
I have a bit of code that doesn't work exactly as I expect... Summary: create a contour plot of data that has a z-range of 21 to 27. hold on plot3k (from the FEX) data that falls into the same x and y ranges but has a z-range of -70 to -66. Plot3k puts up a colorbar that has the labels from -70 to -66 (plot3... 9 Jul 2010 14:58