Advice for Reader's of
Fractals, Visualization and J, 2nd edition (or Special Fall 2005
edition) using J5.04 with the Image3 Addon
A number of J features have changed in J5.04 which
require minor or changes to the scripts from 5.01
and labs associated with the book. In addition, new scripts
were written for a special, but incomplete, edition of the
text written for students during the Fall of 2005. The new
versions make substantial use of the image3 addon which
also needs to be installed.
Original Scripts Script for J5.01 Script for J504 with Image3
alan.ijs alan.ijs alan.ijs
chaotica.ijs chaotica2.ijs chaotica3.ijs & chaotica3x.ijs
dwin.ijs dwin+.ijs dwin2.ijs
owin.ijs owin+.ijs owin+.ijs
ped8.ijs ped8b.ijs ped8c.ijs
povkit.ijs povkit+.ijs povkit2.ijs
raster4.ijs raster5.ijs raster6.ijs
ts_data.ijs ts_data.ijs ts_data.ijs
automata.ijs
vlife2.ijs
It is now advised that all materials be placed in
a subdirectory of the "addons" directory: addons/fvj2.
Then the labs will be accessible and scripts loads
will be as in the text except for the addition of the
addons prefix to the path.
The labs were and are:
chaotica2.ijt
dwin+.ijt
owin+.ijt
povkit+.ijt
raster6.ijt
Most of the images created in the text can be
more or equally conveniently read or written
using tools from the image 3 addon
(available from Jsoftware)
In particular, to read an 8-bit paletted image file
'p b'=:readbmp8 'blur.bmp' (raster5)
'p b'=:pal_read_bmp 'blur.bmp' (image3)
'p b'=:pal_read_bmp 'blur.png' (raster6)
(p;b) write_image 'image.bmp (image3)
However, similar statements under image3 use
png's which are typically much smaller files
(p;b) write_image 'image.png (image3)
Also, the image3 addon has facilties for creating
*.mov animations from J without using other tools.
Image files:
Original images Updated for J5.04 with Image3
keys.bmp (24 bit) keys.jpg
blur.bmp (8 bit) blur.png
line.bmp (8 bit) line.png
nearp4m.bmp (8 bit) nearp4m.png