Ticket #644 (closed assessed: not an issue)

Opened 9 years ago

Last modified 8 years ago

Relative biomass Timeseries not plotting properly

Reported by: shermanl Owned by: joeb
Priority: normal Milestone: Ecopath 6: release 6.0.8
Component: Ecosim Version:
Severity: minor Keywords:
Cc:

Description (last modified by shermanl) (diff)

When a TimeSeries? is set to relative (starting point at 1), it scales the Ecosim output plot for that group.

Reported by Cathy Bulman. See two attachments below.

From: <Cathy.Bulman@…>
To: <drmbongo@…>

Hi Jeroen

I still can’t quite get whether this is a display problem or my non-understanding of how these time series (i.e. type relative Biomass) are rescaled>

EG. If you can see this plot for CPUE 35 first value for 1994 is 1. It is even plotted on the time series as 1. All my time series start at 1 so I didn’t think rescaling of any sort was necessary (Beth doesn’t believe so either)

But take a look at the Ecosim plot. The cursor is where the first of the time series 35 is plotted (i.e. at 0.67). Sorry yellow isn’t a good display colour!



So, if I’ve completely missed something here, could someone please explain the format for the rescaling.

Attachments

noname.jpg (43.8 KB) - added by shermanl 9 years ago.
noname2.jpg (38.9 KB) - added by shermanl 9 years ago.

Change History

Changed 9 years ago by shermanl

Changed 9 years ago by shermanl

comment:1 Changed 9 years ago by shermanl

  • Description modified (diff)

comment:2 Changed 9 years ago by jeroens

  • Milestone set to Ecopath 6

comment:3 Changed 9 years ago by jeroens

  • Component changed from Contaminant tracing to Ecosim
  • Severity changed from block to minor

comment:4 Changed 9 years ago by shermanl

  • Type set to not assessed

comment:5 Changed 9 years ago by shermanl

  • Milestone changed from Ecopath 6: build 6.0.7 to Ecopath 6: build 6.0.8

comment:6 Changed 9 years ago by shermanl

  • Owner joeb deleted
  • Status changed from new to assigned

comment:7 Changed 8 years ago by joeb

  • Owner set to joeb

comment:8 Changed 8 years ago by joeb

Relative Biomass timeseries values are scaled by mle (mean log error) and then made relative to the start biomass value (biomass from Ecopath) display value = obs(t)/exp(mle)/B0. This is the value that you see when you hover the cursor over a timeseries data point. Not the value in the data point. Would it be better to hide this value?

comment:9 Changed 8 years ago by joeb

  • Status changed from assigned to closed
  • Type changed from not assessed to assessed
  • Resolution set to not an issue
Note: See TracTickets for help on using tickets.