#!/bin/bash

RRDPATH="/home/pi/temps"

OUTPUTDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

rrdtool xport -s now-3h -e now --step 300 \
DEF:a=$RRDPATH/hometemp.rrd:temp:AVERAGE \
DEF:b=$RRDPATH/hometemp.rrd:temp:AVERAGE \
XPORT:a:"Office" \
XPORT:b:"Outside" > $OUTPUTDIR/temperature3h.xml