#!/bin/sh


rrdtool graph "$graph.tmp" \
	\
	--imgformat PNG \
	\
	--width "$width" \
	--height "$height" \
	\
	--start end-1d \
	--end now \
	\
	--title 'Two days' \
	--vertical-label '°C' \
	\
	--units-exponent 0 \
	--units-length "$units_length" \
	\
	--slope-mode \
	--interlaced \
	--alt-y-grid \
	\
	"DEF:temp=$rrd:temp:AVERAGE" \
	"DEF:temp_cf_min=$rrd:temp:MIN" \
	"DEF:temp_cf_max=$rrd:temp:MAX" \
	\
	"DEF:temp_y=$rrd:temp:AVERAGE:start=end-1d:end=now-1d" \
	"DEF:temp_y_cf_min=$rrd:temp:MIN:start=end-1d:end=now-1d" \
	"DEF:temp_y_cf_max=$rrd:temp:MAX:start=end-1d:end=now-1d" \
	\
	"SHIFT:temp_y:$shift_1day" \
	\
	'VDEF:temp_min=temp_cf_min,MINIMUM' \
	'VDEF:temp_max=temp_cf_max,MAXIMUM' \
	'VDEF:temp_avg=temp,AVERAGE' \
	'VDEF:temp_last=temp,LAST' \
	\
	'VDEF:temp_min_y=temp_y_cf_min,MINIMUM' \
	'VDEF:temp_max_y=temp_y_cf_max,MAXIMUM' \
	'VDEF:temp_avg_y=temp_y,AVERAGE' \
	\
	'COMMENT:\s' \
	'COMMENT:\s' \
	'COMMENT:\s' \
	'COMMENT:                 Min     Max     Avg     Last\n' \
	'COMMENT:\s' \
	\
	"LINE2:temp_y#$yesterday:Yesterday " \
	'GPRINT:temp_min_y:%6.1lf' \
	'GPRINT:temp_max_y:%6.1lf' \
	'GPRINT:temp_avg_y:%6.1lf\n' \
	\
	"LINE2:temp#$today:Today     " \
	'GPRINT:temp_min:%6.1lf' \
	'GPRINT:temp_max:%6.1lf' \
	'GPRINT:temp_avg:%6.1lf' \
	'GPRINT:temp_last:%6.1lf\n' \
	\
	"COMMENT:                                                  `date '+%Y-%m-%d %H\:%M\:%S GMT%z/%Z'`" \
	\
	> /dev/null && \
	\
	mv "$graph.tmp" "$graph" || \
	exit 1