Matlab

matlab gui help
Hi, I'm trying to build a GUI in matlab whereby a user can get a line profile of an image using improfile. I'm able to load the image into an axes object and manipulate it through other functions (convert it to grayscale, etc.) , however, I'm unable to use the buttondownfcn when I click on the image(axes) itself. ... 20 Jul 2010 17:58

parfor vs for loop time consumption
hello, i've been trying to use parfor in my program as i will use much for loops in it. however i realised that parfor loop consumes more time than typical for loop. my parfor loop program: a=1; parfor i=1:100 for j=1:100 a=a+1; end end time elapsed=0.288714 seconds my fo... 21 Jul 2010 13:33

constraints in system of non-linear equations
Hi, I'm trying to solve a system of 3 non-linear equations (using fsolve), and I need to impose restrictions on the each of the unknowns. Is there a way to do this in Matlab? In case you're wondering, the constraints are: 1>a>0 b>0 1>a+c>0 (a,b, and c are solutions to the equation) Many thanks! Tatyana ... 21 Jul 2010 05:54

2D Interpolation Using 3D Information
The simplest way to describe my problem is using a cylinder. I essentially have cross sections of a cylinder at discrete, regular intervals along the Z axis. The Z axis is defined here as the axis running through the center of the cylinder length wise. Looking at an XY cross section you would see a circle. The cross... 21 Jul 2010 23:29

Convert M file to Simulink Model
Hi All: I created a power transformer using a finite element program comsol. I extracted the M file from that program and i want to convert that M file to a simulink model to do a transient study. How do I go about that? Best Regards, PJ ... 20 Jul 2010 20:10

Open a .fig, adding line or data
Hi! I have a set of data i want to plot now, and another sets of data that i want to add later, but with the corresponding legend. I thought of using simply a "open, saveas" structure but it does not work properly. Any ideas? ... 21 Jul 2010 11:20

Simulink - Non-overlapping data
Hello, In Simulink I'm trying to process data frame-wise, i.e. collect e.g. 32 points of data, process it, output while collecting the next 32 points of data, process and so on. The buffer-block seem to collect the 32 points of data but then update the buffer at each sampling instance with the 32 last points. I want... 24 Jul 2010 20:57

Question about dicom read
Dicom read gives output as uint16, but when I did this , why did I still get uint16 not double ? x = dicomread(IM); x = double(IM) - 1024; x is still uint16. ... 20 Jul 2010 16:51

Add new line on static text
Hi everybody, I'm trying to write some information in static text object. This information will be updated every certain time. Currently i'm trying this way: set(handles.text_info, 'String', ['Volume Size: ',num2str(size(volOriginal))]); set(handles.text_info, 'String', [get(handles.text_info, 'String'), '\n... 20 Jul 2010 17:58

Question about dicom read
Dicom read gives output as uint16, but when I did this , why did I still get uint16 not double ? x = dicomread(IM); x = double(IM) - 1024; x is still uint16. ... 20 Jul 2010 15:46