Posted in Apple, Software on Feb 15th, 2007 No Comments »
I’ve been recently working on some screencasts to demonstrate data analysis techniques.
Two common features I needed for my screencasts, which I’ve seen many screencasters also use/need, are:
Overlay of a small frame on top of the screencast. For instance, you may want people to see you while you are talking. With computers taking more [...]
Posted in Rails, Ruby, Software on Feb 8th, 2007 No Comments »
I’m writing a portfolio management application in Rails where complex validations are required between fields of instances. The MVC paradigm of Rails is very good to encapsulate all the business logic of the application in a very readable way.
I found an article here describing how to add validations to a model through plugins, making [...]
Posted in Apple, Geeky stuff, Objective C, Software, Tools & methodologies on Jan 25th, 2007 2 Comments »
I had old scans of many guitar tab books as a directory of JPEG files, sequentially numbered. That was the way the old scanner stored documents. My SnapScan has an automatic document feeder and scans directly to PDF, which is much nicer to use. I wanted to join these JPEGs into a [...]
Posted in Business, Data analysis, Excel, Software, Tools & methodologies on Nov 30th, 2006 No Comments »
Business data is quite often expressed across many dimensions. The profitability equation in a company is very simple in concept, but in practice those revenues come across regions, product lines, products etc., making them in fact multidimensional data.
Users of OLAP systems are very aware of multidimensional data. However, many spreadsheet users are not, [...]
Posted in Apple, Software on Nov 24th, 2006 1 Comment »
Although XCode has its own “code beautifier” built-in function (Format->Re-indent), it didn’t make it for me. It seems it is more tuned up for Objective C, but with a lot of my code being C++, these are among the biggest annoyances:
The first line after private/public/protected were indented one more tab from what it should [...]
Posted in Software, Tools & methodologies on Nov 3rd, 2006 No Comments »
Wordpress was an easy option to “bookmark” something while browsing the web, since I usually had one browser open on my blog. However, it’s quite annoying to sort through many little blog entries that are no less than a bookmark with minimal extra comment. Now I linked my del.icio.us bookmarks on the right [...]
Posted in Apple, Objective C on Aug 19th, 2006 No Comments »
While developing the iPhoto add in I found these interesting sources for several Cocoa classes.
Posted in Apple, Objective C, Python, Software on Aug 10th, 2006 No Comments »
iPhoto plugin to export in Flash
Posted in Business, Software on May 23rd, 2006 No Comments »
Here is a link to the XBRL standard for financial reporting. For the genetic algorithm project this may be the best alternative to read financial info
Posted in Games and puzzles, Python, Software on Apr 30th, 2006 No Comments »
This is a game invented in 1883 by Edouard Lucas d’Amiens, a french mathematician. He loved anagrams, and he used the pseudonim Professor N. Claus (de Siam), which is an anagram of his name, to publish about the game.
The rules are very simple:
Only one disc can be moved at a time
A larger disc can’t [...]
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