From: ces.fci.junk@...
Date: 2005-11-15T01:17:15+09:00
Subject: Re: RMagick 1.9.3: examples/histogram.rb - erro

I believe I figured it out although I'm not entirely sure of the
solution (unless you can tell me how to loop through all the values and
unset the nil values -- note: i'm still new to ruby).
running this lets me know there is a lot of nil values which would
explain the "nil:NilClass (NoMethodError)" -- nil doesn't have the max
method:
for i in red
    p "nil!" if i.nil?
end

Now, what is strange about this is that the arrays are *already*
defined to all have zero:
red   = Array.new(HISTOGRAM_COLS, 0)
green = Array.new(HISTOGRAM_COLS, 0)
blue  = Array.new(HISTOGRAM_COLS, 0)
alpha = Array.new(HISTOGRAM_COLS, 0)
int   = Array.new(HISTOGRAM_COLS, 0)

I tried changing all of the 0's to 1's to see if that would make a
difference (it did not).  I also tried using the fill method which had
no effect.

but, if you say it is a wild pointer I'll concede.

I had to download xwindow.c and xwindow.h from the sourceforge page
since they weren't included with my source[for ImageMagick] -- I had
received a compile error which said they were missing (maybe that is
related[?]).

Clayton