[racket] Plot is voracious

2014-05-21 17:37 GMT+02:00 Laurent <laurent.orseau at gmail.com>:
> ... it eats everything! (particularly exceptions)
> For example, it is perfectly happy with the following:
>
> % racket
> Welcome to Racket v6.0.1.7.
>> (require plot)
>> (plot (function (lambda(x)(+ x n)))
>   #:x-min 0 #:x-max 10 #:y-min 0 #:y-max 10)
> (object:2d-plot-snip% ...)
>
> ... although n is clearly undefined. Presumably this is to avoid breaking on
> math errors like `(/ 0)` ?

Actually I think there need to be an add-on to plot that takes care of
plotting functions with singularities. Currently the plot for (/ 1 x)
in [-1;1] looks wrong.

An attempt for such an add-on that uses plot as backend:

https://github.com/soegaard/bracket/blob/master/plotting/adaptive-plotting.rkt

/Jens Axel