Make large prettymap maps.

prettymaker.sh

#!/usr/bin/env sh
#
# Usage: prettymaker <start-row> <end-row> <start-col> <end-col>
#
#   Prettymaker will pull map tiles from in the ranges specified at level 10
#   zoom from prettymaps.stamen.com and build a massive map. Each tile is
#   256x256px so fully created map may be large!
#
#   Note: run this in an empty folder, it deletes stuff during processing and
#   may catch items you didn't want deleted.
#

# Creates a row called XXX-row.png where XXX is $1, the row you wanted.
#
# opt [$1] row to get
# opt [$2] start position of row
# opt [$3] end position of row
function create_row() {
  for i in `seq -w $2 $3`; do
    wget http://prettymaps.stamen.com/201008/tiles/isola/10/000/$i/000/$1.png
  done

  mv $1.png $1.png.0
  s=`expr $3 - $2`
  for i in `seq 0 $s`; do
    mv $1.png.$i $i.png.yes
  done

  convert `ls *.png.yes | sort -g` +append $1-row.png

  rm *.png.yes
}

# Creates a map called map.png using the arguments given.
#
# opt [$1] start row
# opt [$2] end row
# opt [$3] start column
# opt [$4] end column
function create_map() {
  for row in `seq -w $1 $2`; do
    create_row $row $3 $4
  done

  convert *-row.png -append map.png

  rm *-row.png
}

# eg. create_map 330 332 500 502
create_map $1 $2 $3 $4