############################ # Display the current voc (volatile organic compounds) value in three color gradients. # Corresponding FileLog definition: # define <fileLogDefinitionName> FileLog ./log/co20-%Y-%m.log <co20 sensor name> # define <webLinkDefinitionName> SVG <fileLogDefinitionName>:co20:CURRENT # attr <webLinkDefinitionName> label "Air quality - Min $data{min1}, Max $data{max1}, Last $data{currval1}" set readonly set terminal png transparent size <SIZE> crop set output '<OUT>.png' set xdata time set timefmt "%Y-%m-%d_%H:%M:%S" set xlabel " " set title '<L1>' set ytics "good" 750, "ok" 1250, "bad" 1750 set y2tics "" 1000,"" 1500 set grid y2tics set ylabel "" set y2label "Air quality (ppm)" set yrange [450:2000] set y2range [450:2000] #FileLog 4:voc:: #FileLog 4:voc::$fld[3]>1000?1000:$fld[3] #FileLog 4:voc::$fld[3]>1500?1500:$fld[3] #FileLog 4:voc::$fld[3]>2000?2000:$fld[3] plot "<IN>" using 1:2 axes x1y2 title 'Air quality (ppm)' ls l5 lw 0.2 with lines,\ "<IN>" using 1:2 axes x1y2 title ' ' ls l1fill lw 0.2 with lines,\ "<IN>" using 1:2 axes x1y2 title ' ' ls l4fill lw 0.2 with lines,\ "<IN>" using 1:2 axes x1y2 title ' ' ls l0fill lw 0.2 with lines