hledger to sankey.csv

sankey.sh

#!/bin/bash
(
  echo "source,target,value"; 
  (
     hledger -f 2018.journal is --cost -O csv -N --tree \
     | sed -nre 's/["£]//g; /expenses,/{s/^/income,/;p}; /expenses[^,]/{s/(.+):([^:]+),/\1,\1:\2,/;p}; /income[^,]/{s/(.+):([^:]+),/\1:\2,\1,/;p};'  \
     | awk -vOFS=, -F, '$3>300 {print $1,$2,$3}' \
     | sort -rn -t, -k3 
  )
) > sankey.csv