Matlab

reporting linear regression?
Hi, i have computed some linear regression analyses using SPSS, but i am not sure of which details to report in an APA style manuscript do i just report the F statistic from the ANOVA? or do i also report the individual r^2 values, or beta weights, or t-statics? thanks in advance ... 9 Jul 2010 12:45

Edge contour for scattered data
Hi. I found what I need in this thread. http://www.mathworks.com/matlabcentral/newsreader/view_thread/173195 But there is no algorithm in files exchange. Does anybody have this algorithm? Thank you. ... 9 Jul 2010 12:45

Real Time Data Acquisition - Why doesn't it stop?
> % Configure the analog input object to trigger manually twice. % We do this because we are using peekdata to acquire the data in % a timer callback function. % The first trigger will fill the buffer with handles.samplesPerTrigger % number of samples. We'll know we have enough samples to start ... 9 Jul 2010 12:45

imEllipse equivalent of setString?
I have multiple ROI's selected in my GUI using imEllipse. I'd like to somehow have them labelled to differentiate one from another. I know that imPoint has the setString property which creates a text label, but this property doesn't seem available for other ROIs (rect, ellipse.) Is there a straightforward way to create... 9 Jul 2010 14:58

How to set input - outup data in Parameter Estimation
Hello, I would like to find PID values by using Parameter Estimation. In the Control and Estimation Tools Manager I press Transient data and then New. After that I suppose to set input and output from my Simulink project but these options are empty. It is written "the model has no input". How I can set these values ... 12 Jul 2010 05:14

How to do the phase shift in time domain?
Hi I want to plot a wavelet (Ricker wavelet) in the time domain using this formula: s(t)=(1-2*pi^2*f^2*(t-tc))*exp(-pi^2*f^2*(t-tc)^2); (t=-1:0.01:1;) and also add a 45 degree phase shift in to that. I multipled s(t) by exp(i*pi/4) to do so, but it finds error using that .It doesn't consider the phase shift(it sa... 9 Jul 2010 16:05

printing to PDF in black/white
Is there a way to select programmatically black&white printing to PDF for a figure? http://www.mathworks.com/access/helpdesk/help/techdoc/ref/print.html http://www.mathworks.com/access/helpdesk/help/techdoc/creating_plots/f3-84337.html#f3-99776 The 2nd link shows the interactive way of selecting black&white vs.... 9 Jul 2010 11:38

Missing a couple of basic (and very necessary) features in containers.Map
There must be a method to make a copy of the Map (right?); the documentation isn't very helpful in this regard, as copying by value is a pretty standard operation. I just figured out how to do this and thought I'd share: x = containers.Map(); x('hi') = 1234; y = [ x; containers.Map() ]; y('hi')... 9 Jul 2010 12:45

Getting dominant colors of an image
Hi all, Let's say we have a color image and we wanna get what humans would describe as the dominant colors in it, and their respective weights in it. What do you think is a good way about this? What I've got mostly so far is: transform the image into CIE-LAB and run k-means in order to get k centroids of color. ... 9 Jul 2010 13:52

Need for speed
Hello all, My Matlab code works fine, I just want it to be a little faster (don't we all). I have a GUI with about 10 functions inside of it. Are there any general tips or tricks for making the program work faster? For instance, can I skip over code when its not in use or condense sections into more functions? Tha... 9 Jul 2010 22:43