2009 May 22, 11:26
sequelguy posted a photo:
trees house home washington redmond 2008 Nov 5, 3:55A graphing library which includes variaous graph visualization algorithms. GNU licensed. "igraph is a free software package for creating and manipulating undirected and directed graphs. It includes
implementations for classic graph theory problems like minimum spanning trees and network flow, and also implements algorithms for some recent network analysis methods, like community structure
search."
reference free development programming visualization graph math library opensource c++ igraph graphviz via:mattb 2008 Oct 5, 9:17
Sarah asked me if I knew of a syntax highlighter for the QuickBase formula language which she uses at work. I couldn't find one but thought it might be fun to make a QuickBase Formula syntax highlighter based on the QuickBase help's
description of the formula syntax. Thankfully the language is relatively simple since my skills with ANTLR, the parser generator, are rusty now and I've only
used it previously for personal projects (like Javaish, the ridiculous Java based shell idea I had).
With the help of some great ANTLR examples and an ANTLR cheat
sheet I was able to come up with the grammar that parses the QuickBase Formula syntax and prints out the same formula marked up with HTML SPAN tags and various CSS classes. ANTLR produces the
parser in Java which I wrapped up in an applet, put in a jar, and embedded in an HTML page. The script in that page runs user input through the applet's parser and sticks the output at the bottom
of the page with appropriate CSS rules to highlight and print the formula in a pretty fashion.
What I learned:
- I didn't realize that Java applets are easy to use via script in an HTML page. In the JavaScript I
can simply refer to publicly exposed methods on the applet and run JavaScript strings through them. It makes for a great combination: do the heavy coding in Java and do the UI in HTML. I may end up
doing this again in the future.
- I love ANTLRWorks, the ANTLR IDE, that didn't exist the last time I used ANTLR. It tells you about issues with your grammar as you create it,
lets you easily debug the grammar running it forwards and backwards, display parse trees, and other useful things.
java technical programming quickbase language antlr antlrworks 2008 Jun 19, 4:07"An elevated walkway through the trees by Marks Barfield Architects has opened at Kew Gardens in London." Brings up memories of so many intricate treehouse drawings as a child.
nature london design architecture tree 2007 May 17, 1:04I've seen several humorous kitty related stories recently and then happened upon the whole
lolcat scene. Rather than post all the links to humorous
kitty lolcat photos to delicious I figure I'll roundup the links here.
A cat in England enjoys
riding the bus and does so regularly (
associated lolcat commentary).
A cat
trees a bear (also with
lolcat
commentary).
xkcd has a
comic on the topic of lolcat commentary. xkcd also had a
non-lolcat cat related comic recently that I found
funny.
And now I'm out of commentary so I'll just... "X cat is X":
interested,
aggressive/defensive. VG related:
SF,
Zelda. Other:
cookie,
sad.
roundup comic kitty personal cat humor nontechnical 2006 Jun 27, 3:08The Data Visualization Components give you six .NET components for adding data visualization into your own programs: - Treemaps - Bubble Charts - Piano Rolls - Spire Charts - Thread Trees - Time
Series Charts
csharp programming free visualization microsoft
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