Output display format

[larissafranklin23]

Hello,
I'm having some trouble to understand the format of my weathering output file.
I'm using this as my script:
spill1 = surface_point_line_spill(num_elements=2000, ## qtd de particulas
start_position=(-26.21,-11.99),
release_time=start_time,
end_position=(-26.64, -11.70),
end_release_time= start_time + gs.hours(5.1),
amount = 20464, ## default volume_units=m^3
substance=gs.GnomeOil(filename='bachequero-heavy_AD00100.json'),
units='m^3',
windage_range= (0.01,0.02),
windage_persist = 1)

And when I open it to check the number is really different:

The output format of the data is displaying too many decimal places. How do you handle these weathering readings?

[ChrisBarker-NOAA]

The output is using all the precision of the internal floating point numbers: about 15 decimal digits, which is the default behaviour.

It is a CSV file, so if you load it into, e.g. Excel, you can display as many or as few digits as you like.

That being said, it is a bit silly to store this many digits -- I'll make an issue to limit the CSV output to a more reasonable number.

[larissafranklin23]

Hello Chris, thank you.
I think I wasn't clear in my question.

I'm confused about the result because the amount that was spilled was 20464m^3, but when I look at my results, I find weathering results as evaporated, dispersed, sedimentation and other quantities that are larger than the originally spilled amount.

amount released = 20464, ## default volume_units=m^3
units='m^3',

For example, the result of one of the models run below:
evaporated: 2321608.9919537366
dispersed: 2178.419994947777
sedimentation: 111.26444704240757
beached: 25655.915887327097
floating: 3112104.1564391125

Is there any conversion that I need to do ?

[dylanrighi]

The disconnect is that GNOME thinks in mass (kg) internally (correct me if I'm wrong Chris). So it has used your input m^3 and translated to kg using the oil density and then works in kg from there.

…

On Thu, Jun 15, 2023 at 12:42 PM larissafranklin23 ***@***.***> wrote: Hello Chris, thank you. I think I wasn't clear in my question. I'm confused about the result because the amount that was spilled was 20464m^3, but when I look at my results, I find weathering results as evaporated, dispersed, sedimentation and other quantities that are larger than the originally spilled amount. amount released = 20464, ## default volume_units=m^3 units='m^3', For example, the result of one of the models run below: evaporated: 2321608.9919537366 dispersed: 2178.419994947777 sedimentation: 111.26444704240757 beached: 25655.915887327097 floating: 3112104.1564391125 Is there any conversion that I need to do ? — Reply to this email directly, view it on GitHub <#147 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABQA2MAYRQYK25QBNUFR4QDXLNQQDANCNFSM6AAAAAAZIFBGEE> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

-- Dylan Righi, Oceanographer (he/him) ***@***.*** Emergency Response Div (Genwest Systems) Office of Response and Restoration NOAA / National Ocean Service (NOS) 7600 Sand Point Way NE Seattle, WA 98115

[ChrisBarker-NOAA]

Thanks @dylanrighi -- that is correct -- we should put units in the head of that CSV file.