Combining Multiple Datasources

I've been looking at this for a while and still don't understand things 
- I'm missing some basic cricket knowledge here. I want to SUM four of 
the data sources listed below into one graph. Can someone please assist? 
I already have two working graphs:

in.email.received:
target in.email.received
   display-name = "Incoming E-Mail Received - Processed by SpamAssassin"
   short-desc   = "Incoming E-Mail Received - Processed by SpamAssassin"
   long-desc    = "Incoming E-Mail Received - Processed by SpamAssassin"
   util-dir = %auto-base%/../cricket/util
   auto-target-path = %auto-base%
   target-type = in.email.received

datasource spam
   desc = "Total Incoming Spam"
   ds-source = 
"file:0:/mnt/global/cricket/datasources/services/mailin/totspamham-spam"
   rrd-ds-type = GAUGE

datasource ham
   desc = "Total Incoming Ham"
   ds-source = 
"file:0:/mnt/global/cricket/datasources/services/mailin/totspamham-ham"
   rrd-ds-type = GAUGE

datasource total
   desc = "Total Incoming E-Mail"
   ds-source = 
"file:0:/mnt/global/cricket/datasources/services/mailin/totspamham-total"
   rrd-ds-type = GAUGE

targettype in.email.received
   ds = "spam,ham,total"

graph spam
   draw-as = LINE2
   units = "messages"
   legend = "spam"
   color = "red"
   y-axis = "Messages Received / 15 min"

graph ham
   draw-as = LINE2
   units = "messages"
   legend = "ham"
   color = "blue"
   y-axis = "Messages Received / 15 min"

graph total
   draw-as = LINE2
   units = "messages"
   legend = "total"
   color = "green"
   y-axis = "Messages Received / 15 min"

in.email.received.nospam:
target in.email.received.nospam
   display-name = "Incoming E-Mail Received - No SpamAssassin"
   short-desc   = "Incoming E-Mail Received - No SpamAssassin"
   long-desc    = "Incoming E-Mail Received - No SpamAssassin"
   util-dir = %auto-base%/../cricket/util
   auto-target-path = %auto-base%
   target-type = in.email.received.nospam

datasource local
   desc = "Number of Incoming E-Mail Messages Received - Local Origin"
   ds-source = 
"file:5:/mnt/global/cricket/datasources/services/mailin/discardedspam"
   rrd-ds-type = GAUGE

datasource toobig
   desc = "Number of Incoming E-Mail Messages Received - Too Big for 
SpamAssassin"
   ds-source = 
"file:6:/mnt/global/cricket/datasources/services/mailin/discardedspam"
   rrd-ds-type = GAUGE

datasource norelay
   desc = "Number of Incoming E-Mail Messages Received - Unknown 
Tigger/Icarus Users"
   ds-source = 
"file:7:/mnt/global/cricket/datasources/services/mailin/discardedspam"
   rrd-ds-type = GAUGE

targettype in.email.received.nospam
   ds = "local, toobig, norelay"

graph local
   draw-as = LINE2
   units = "e-mail"
   legend = "local"
   y-min = 0
   y-axis = "E-Mail Received / 15 min"

graph toobig
   draw-as = LINE2
   units = "e-mail"
   legend = "toobig"
   y-min = 0
   y-axis = "E-Mail Received / 15 min"

graph norelay
   draw-as = LINE2
   units = "e-mail"
   legend = "norelay"
   y-min = 0
   y-axis = "E-Mail Received / 15 min"

-- 
Roberto Ullfig - [email protected]


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