Mjukare grafer?

RRDTool är en Linuxmjukvara som kan användas för att lagra data i Round-Robin Databaser för att sedan generera grafer utifrån den lagrade datan.

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skoog
Wannabe
Inlägg: 3
Blev medlem: 09 mar 2013, 17:28
Ort: Falkenberg

Mjukare grafer?

Inlägg av skoog » 09 mar 2013, 17:37

Hej,

Har ett litet problem med mina grafer, de blir väldigt taggiga, hur fixar man det?
Se exempel på http://winserv.9c.se

Jag har lagt upp det så här i crontab

Kod: Markera allt

*/1.5 * * * *  
.
Kör så på scriptet som skapar png filen och hämtar temperaturen.

Min rrd fil.

Kod: Markera allt

filename = "outside_temp.rrd"
rrd_version = "0003"
step = 150
last_update = 1362842943
header_size = 2872
ds[outsidetemp].index = 0
ds[outsidetemp].type = "GAUGE"
ds[outsidetemp].minimal_heartbeat = 300
ds[outsidetemp].min = -5.0000000000e+01
ds[outsidetemp].max = 6.0000000000e+01
ds[outsidetemp].last_ds = "1.57"
ds[outsidetemp].value = 1.4653112853e+02
ds[outsidetemp].unknown_sec = 0
rra[0].cf = "AVERAGE"
rra[0].rows = 576
rra[0].cur_row = 74
rra[0].pdp_per_row = 1
rra[0].xff = 5.0000000000e-01
rra[0].cdp_prep[0].value = NaN
rra[0].cdp_prep[0].unknown_datapoints = 0
rra[1].cf = "AVERAGE"
rra[1].rows = 2016
rra[1].cur_row = 550
rra[1].pdp_per_row = 2
rra[1].xff = 5.0000000000e-01
rra[1].cdp_prep[0].value = 1.5923928713e+00
rra[1].cdp_prep[0].unknown_datapoints = 0
rra[2].cf = "AVERAGE"
rra[2].rows = 52560
rra[2].cur_row = 35651
rra[2].pdp_per_row = 4
rra[2].xff = 5.0000000000e-01
rra[2].cdp_prep[0].value = 4.6469872468e+00
rra[2].cdp_prep[0].unknown_datapoints = 0
rra[3].cf = "AVERAGE"
rra[3].rows = 175200
rra[3].cur_row = 156821
rra[3].pdp_per_row = 24
rra[3].xff = 5.0000000000e-01
rra[3].cdp_prep[0].value = 1.7812978850e+01
rra[3].cdp_prep[0].unknown_datapoints = 0
rra[4].cf = "MAX"
rra[4].rows = 5760
rra[4].cur_row = 4278
rra[4].pdp_per_row = 1
rra[4].xff = 5.0000000000e-01
rra[4].cdp_prep[0].value = NaN
rra[4].cdp_prep[0].unknown_datapoints = 0
rra[5].cf = "MAX"
rra[5].rows = 2016
rra[5].cur_row = 1761
rra[5].pdp_per_row = 2
rra[5].xff = 5.0000000000e-01
rra[5].cdp_prep[0].value = 1.5923928713e+00
rra[5].cdp_prep[0].unknown_datapoints = 0
rra[6].cf = "MAX"
rra[6].rows = 52560
rra[6].cur_row = 4686
rra[6].pdp_per_row = 4
rra[6].xff = 5.0000000000e-01
rra[6].cdp_prep[0].value = 1.5923928713e+00
rra[6].cdp_prep[0].unknown_datapoints = 0
rra[7].cf = "MAX"
rra[7].rows = 175200
rra[7].cur_row = 140712
rra[7].pdp_per_row = 24
rra[7].xff = 5.0000000000e-01
rra[7].cdp_prep[0].value = 1.7609123530e+00
rra[7].cdp_prep[0].unknown_datapoints = 0
rra[8].cf = "MIN"
rra[8].rows = 5760
rra[8].cur_row = 601
rra[8].pdp_per_row = 1
rra[8].xff = 5.0000000000e-01
rra[8].cdp_prep[0].value = NaN
rra[8].cdp_prep[0].unknown_datapoints = 0
rra[9].cf = "MIN"
rra[9].rows = 2016
rra[9].cur_row = 900
rra[9].pdp_per_row = 2
rra[9].xff = 5.0000000000e-01
rra[9].cdp_prep[0].value = 1.5923928713e+00
rra[9].cdp_prep[0].unknown_datapoints = 0
rra[10].cf = "MIN"
rra[10].rows = 52560
rra[10].cur_row = 47410
rra[10].pdp_per_row = 4
rra[10].xff = 5.0000000000e-01
rra[10].cdp_prep[0].value = 1.5013064638e+00
rra[10].cdp_prep[0].unknown_datapoints = 0
rra[11].cf = "MIN"
rra[11].rows = 175200
rra[11].cur_row = 23614
rra[11].pdp_per_row = 24
rra[11].xff = 5.0000000000e-01
rra[11].cdp_prep[0].value = 1.4866955796e+00
rra[11].cdp_prep[0].unknown_datapoints = 0
emil@ubuntu:~/rrddata$
Och mitt script som skapar png filen (om man kan göra något här?)

Kod: Markera allt

#!/usr/bin/perl

use RRDs;

my $cur_time = time();
my $start_time = $cur_time - 86400;     # set end time to 24 hours ago

RRDs::graph "/var/www/graph_temp.png",
                        "--start= $start_time",
                        "--end= $cur_time",
                        "--title=  Outside forradet",
                        "--height= 300",
                        "--width= 500",
                        "--vertical-label= �C",
              "DEF:OutsideTemp=/home/emil/rrddata/outside_temp.rrd:outsidetemp:AVERAGE",
                        "COMMENT:\t\t\t\tNu     Medel    Max    Min\\n",
                        "HRULE:0#0000FF",
              "LINE2:OutsideTemp#0000FF:Ute\t\t\t",
                        "GPRINT:OutsideTemp:LAST:%6.1lf",
                        "GPRINT:OutsideTemp:AVERAGE:%6.1lf",
                        "GPRINT:OutsideTemp:MAX:%6.1lf",
                        "GPRINT:OutsideTemp:MIN:%6.1lf\\n";

my $err=RRDs::error;
if ($err) {print "problem generating the graph: $err\n";}

print "Done!\n"

nissemanpower
Wannabe
Inlägg: 12
Blev medlem: 12 maj 2011, 20:35
Ort: kalle

Re: Mjukare grafer?

Inlägg av nissemanpower » 17 nov 2013, 15:07

Du skulle kunna testa med att lägga till --slope-mode.
--slope-mode -- says rrdtool should smooth the graph and create a more organic looking lines. This option uses anti-aliasing and gives the graphs a smooth hand drawn look. Using slope also creates the faded sharp lines in the peaks of the graph.

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