If you liked that, you may want to read J for C programmers online. I’ve purchased my PDF copy from Lulu.

I really wanted this to be from Ordinary differential equations to J but this is also ok

After reading this I couldn’t resist solving the harmonic oscillator numerically in q… (last line is just ASCII plotting)

q)a:2 2#1 0 0 1+0.01*0 1 -1 0 q)z:2000(a$)\1.0 0 q)" *"[(3-til 7)=\:"j"$3*z[25*til 50;0]] "*** ***** **" " ** ** ** ** " " * * * * " " * * ** * " " ** ** * * " " ** * ** ** " " ***** ***** "

No, this is ok. ;)

EDIT: actually, do you have a link to From Ordinary Differential Equations to J?

From Ordinary Differential Equations to J

Unfortunately I haven’t found this yet. Might have to learn me some APL and write it myself.

Oh. I get it. “Ode” as an acronym. In my defense I hadn’t had any coffee yet.

If you’re interested in that sort of thing, you might like this: http://www.softwarepreservation.org/projects/apl/Books/CollegeMathematicswithAPL/view

If you liked that, you may want to read J for C programmers online. I’ve purchased my PDF copy from Lulu.

I really wanted this to be from Ordinary differential equations to J but this is also ok

After reading this I couldn’t resist solving the harmonic oscillator numerically in q…

(last line is just ASCII plotting)

No, this is ok. ;)

EDIT: actually, do you have a link to

From Ordinary Differential Equations to J?Unfortunately I haven’t found this yet. Might have to learn me some APL and write it myself.

Oh. I get it. “Ode” as an acronym. In my defense I hadn’t had any coffee yet.

If you’re interested in that sort of thing, you might like this: http://www.softwarepreservation.org/projects/apl/Books/CollegeMathematicswithAPL/view