Can you find any pattern in the two signals, green and blue? The blue signal is the brain wave (measured by NIRS) of a person when he is pressing some buttons (the timing of button pressing is shown i
Wavelet transform coherence (WTC) is a method for analyzing the coherence and phase lag between two time series as a function of both time and frequency (Chang and Glover 2010). Here I played with it
SVM is mostly commonly used for binary classifications. But one branch of SVM, SVM regression or SVR, is able to fit a continuous function to data. This is particularly useful when the predicted varia
Update 2021/2/27: If you find griddata3 not working, try to change griddata3 to griddata. I was asked where to get nirs2img script. Here it is. The download link is at the bottom of this article. nirs2img is to create an image file from the input data. Then theimage file can be viewed by a
Adobe AIR 2 beta is out last night (Nov 16, 2009). It includes a number of highly expected features including launching native applications. It also improves CPU/memory usages. Some sample applications include: http://labs.adobe.com/technologies/air2
When you submit a manuscript, many journals ask you to send your figures in TIFF format with some requirements such as 300dpi, flattened, LZW compressed, etc. How to do that? My figures are usually finalized in MS PowerPoint. I don’t use PowerP
updated: 2010/01/05, add plot of original data Assume our data contains two features and they are highly correlated (say, r>0.9). The 1st feature does slightly better than the 2nd one in classifying the data. The question is, is the weight of the
My desktop computer in the lab is a Mac Pro. I also installed Windows XP on this computer through VMWare. Windows XP (and 7, now windows 10 64bit) major working environment, including manuscript writing, data analysis, preparing presentation etc MS W
I usually write MatLab scripts to parse the behavior data collected in a fMRI or NIRS experiment. It’s powerful and flexible. But as I have to do an Excel version recently, I found Excel has a great advantage — it’s easy to share wi
If your AIR application needs to do something (e.g. saving some settings) before quitting, you may listen to the Event.EXITING event, and then preventDefault(), then do something, and finally call NativeApplication.nativeApplication.exit() to quit. B
My dell computer (E510) doesn’t make my life easy: If I turn it off, I can’t turn it on easily. The yellow light is blinking but it just doesn’t turn on. After I turned it on with some complicated tricks months ago, I have always ke
If you use mx:WindowedApplication, you won’t have this problem. If you use mx:Application, you may find your application is not visible after launching. Solution: open your application description file (xxxx-app.xml) and change visible propert
Host OS: Mac Virtual machine: Windows XP Problem: You initially set the hard disk size to 20G. Later you find you need to increase the disk size to 100G. Solution: turn off your virtual machine and set the hard disk size to 100G. You don’t need
