Wine and Firefox's overloaded .... overcrowded ...

apparently on the release day of Firefox 3 and Wine 1.0 ...
it's almost impossible to access their website and get a copy of the hottest stuff ...

see the slash dot post for their descriptions and news ...
meanwhile, i'll just get'em tonight.

http://tech.slashdot.org/tech/08/06/17/1547241.shtml --> Wine 1.0
http://tech.slashdot.org/tech/08/06/17/1250229.shtml --> FF 3.0

have fun.

daniel

Re-introduction to Javascript ...

this might be an older article (published in 2006) ... but it's a must for web developers or whoever is interested in Javascript ... re-introduced yourself to this confusing yet amazing language!

http://developer.mozilla.org/en/docs/A_re-introduction_to_JavaScript

i've been working with Javascript on and off during the last year, it has been quite an experience because it's unconventional (it's not like C# or C++ or HTML), but it's powerful.

More thoughts to come on a later date ...

thoughts on Canvas ....

i guess i haven't wrote anything technical ... in a long while .... please check out my other blogs ....

anyways ... i came across this new element in HTML that's been kind of interesting ... the canvas tag it's ! it allows the real time drawing of rectangles and other arbitrary shapes ... check these references out ..

there aren't too much stuff out there ... (mainly it's driven by Mozilla, Apple , Google ... )
here's the main tutorial page -
http://developer.mozilla.org/en/docs/Canvas_tutorial

here's a shell to try your code on -
http://mozilla.doslash.org/stuff/canvas/shell.html

here's an implementation on Internet Explorer -
http://excanvas.sourceforge.net/

... peace out ...

more on graphs ..

just fyi - to plot in different kinds of graph in Octave .. there are several different keywords .. such as

for bar graph
bar(x,y) ... etc

this page is a great resource ->
http://www.network-theory.co.uk/docs/octave/octave_120.html



daniel

Plotting in Octave

i've been trying to look for help as far as plotting goes in Octave -
especially plotting a function ... over a range of numbers ...

if you are a beginner like me ... this is what i tried, and it has worked so far for a
2d plot.

to plot a function over a range of numbers ... first create the function ...

function y=f(x) y=x.^3+(5*x.^2)-(10*x)+23; end

and then ..
specify the variable ..
linspace = linear space ...
x = linspace(-2,5);

then just plot it ..

plot(x,f(x)) ...

the result should be something like this ....














to add more options to the graph - like grid or title ...
simple do .. options like grid on or title('y vs x') ...

and to plot multiple functions on the same plot ...
trying using the command hold on ...

here's an example ...
given another function

function y=e(x) y = (3*x^.2)+(10*x); end

try

plot(x,f(x))
hold on
plot(x,e(x),'c')




use
hold off

to turn off this option
btw , the 'c' in earlier function meant that to plot the graph in the color cyan.

and last but not least ...
to print the graph onto a gif ...

try
gset terminal gif
gset output "something.gif"
replot

when done do
replot close


that's about it ...

here are some really awesome resources for octave ...
http://www.37mm.no/mpy/octave-r.html (great cheat sheet)
http://octave.sourceforge.net/index/plot.html
(more plotting packages like fplot and multiplot, awesome addition to the standard octave library)

and obviously ...
http://www.gnu.org/software/octave/

Octave is a great alternative to Matlab and such ...
i had it installed on my Windows XP laptop on top of Cygwin ,
and usually run it on top of Cygwin X when graphing ...
resources for Cygwin X and how to get its GUI desktop to show up ...
try http://en.wikipedia.org/wiki/Cygwin/X

have fun =)
God bless.

Thoughts sharings ... and code

so i've decided to post up things/code/tricks that i've learned through different experience and trial and error (especially those that've taken me a while to figure it out ....)
so here we go ...
for my personal blog - http://aggietech.blogspot.com ...
this blog will be purely technical.


daniel