I did the same with pbmtools :)

% for a in map-*-*.png; do pngtopnm $a > `basename $a .png`.ppm; done
% for a in {0..63}; do pnmcat -tb map-${a}-?.ppm map-${a}-??.ppm > 
map-${a}.ppm; done
% pnmcat -lr map-?.ppm map-??.ppm > map.ppm
% pnmtopng map.ppm > telegeography-submarine-cables-2013.png

-rw-r--r-- 1 simonl simonl 95163357 Feb  3 23:53 
telegeography-submarine-cables-2013.png

Simon

On Sun Feb 03, 2013 at 11:44:08PM +0000, Simon Green wrote:
> Imagemagick is a fantastic suite of tools.
> 
> montage ./* -tile 1x64 -geometry +0+0 png:- | montage -  -geometry +0+0
> -tile 64x1 ../assembled.png
> 
> On 03/02/2013 23:05, James A. T. Rice wrote:
> > for i in {0..63} ; do for j in {0..63} ; do wget -O map-$i-$j.png
> > http://b.tiles.telegeography.com/maps/submarine-cable-map-2013/6/$i/$j.png
> > ; done ; done 
> 
> 
> 

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