When pulling out the HDMI cable from a Mac Mini, the TeamViewer session on another computer gets a completely black (or white screen). When inserting the HDMI cable again into the Mac Mini, the desktop is shown properly. This problem was confirmed by the TeamViewer support, which is very good by the way. They …
The FileSystemWatcher .NET class listens to the file system and it is catching any changes and notifications in it. When directories, or files in directories, are changed, events are raised. When a file is created, the FileSystemWatcher class will normally be notified twice. However, up to 4 or more “events” can be fired depending on …
I use and HDMI TV as monitor, different macs on different HDMI channels and it was really tricky for me to find out how to switch between them using ONE bluetooth keyboard and trackpad. The problem is: You have to cut the established bluetooth keyboard and touchpad connection in order to be able to establish …
One bluetooth keyboard, one monitor, but TWO macs. Read More »
Like many others, I have started using cloud services to sync my data across computers. Although there are many nice alternatives like Dropbox and so on, my choice until now is SugarSync. It is very nice and it has completely removed the manual copying of files using FTP that I used to do. I really …
[SOLVED] SugarSync on Mac puts files in Trash, “alias” problems Read More »
The most commonly used function to calculate the matrix rank is probably the one in the MATLAB software package [1]. It is based on the calculation of singular values of the matrix A, and the number of singular values that are greater than some tolerance defines the rank. The algorithm is simple: r = svd(A); …
During 2011 year, I have tried many different ways of making a PLS algorithm (PLS1) as stable possible. The goal was to make it as numerically good as the SVD implemented in MATLAB. The pseudocode that solved the PLS1 case for one y‑varable is shown below and it includes the addition of null vectors to …
There are many methods to obtain null vectors to a given set of vectors. One of the numerically best methods is implemented in MATLAB, based on singular value decomposition, SVD. Null vectors can be used for many different things; one of them is to remove properties that are ore orthogonal to another, given property. Such …
In this posting, I have collected quite many tips and tricks that I use for video editing and for video format conversion. I used to have lots of “Stickies” on my desktop, but decided to move them away from there, and why not to my blog page. Make mp4 m4v and ogg for streaming Export from …
Please note that this is not regarding the Lanczos or the PLS bidiagonalization algorithm. This is about the Householder bidiagonalization algorithm. The difference is huge. For example, there are no y‑variables in the Householder decomposition. It is a decomposition of X that results in a factorization with a bidiagonal matrix in the middle, similar to …
A fast Householder bidiagonalization algorithm Read More »
During the conference in Cape Town on Near Infrared Spectroscopy, NIR2011, I had a keynote in the chemometrics session. I presented a comparison of three different methods for making calibrations including the LOCAL concept by Shenk and Westerhaus, and followng that, I presented another comparison, on different PLS algorithms. As a link between these two …
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