Displaying 20 results from an estimated 34 matches for "oceanographer".
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oceanographers
2003 Oct 18
2
Oceanographic lattice plots?
R 1.8.0 on Windows XP Professional. A huge THANK YOU to the R Team for
this marvelous software.
I am making lattice plots of oceanographic data. The usual layout does not
conform to plotting conventions that marine scientists use when depth is
the independent variable. Under those conventions, plots are made with the
origin at the upper left, depth on the vertical axis (increasing as it
2013 Apr 08
1
Computational Ecologist Job at NOAA in Silver Spring, MD -- Marine Wildlife Spatial Modeling in R
The NOAA National Centers for Coastal Ocean Science is hiring a
Computational Ecologist, a statistical/computational ecologist with
experience fitting advanced spatial models to marine wildlife survey
data (e.g., seabirds and marine mammal transects, fisheries trawl
surveys) in R and other statistical languages. This is a full-time,
long-term stable contract position. We are looking for an
2023 Jul 25
2
Seeking Assistance: Plotting Sea Current Vectors in R
Dear Rcommunity,
I hope this email finds you well. I am writing to seek your assistance with
a data visualization problem I am facing while working with R.
Problem Description:
I have a dataframe named "df" containing the following columns:
"longitude", "latitude", "sea_currents_mag", and "sea_currents_direction".
The dataframe includes sea
2003 Oct 19
0
Oceanographic lattice plots
System info:
Red Hat 9.0
R Version 1.8.0
ESS 5.1.21
Emacs 21.2.1
-------------------
Hello
I've been working with Paul Murrell here in New Zealand to develop plots
of temperature and density profiles at 22 stations spanning a frontal
zxone, and then overlaying the isothermal and mixed layer depths
(similar to Kara et al. 2003 JGR Oceans 108(C3) pg. 24-5, figure 2).
Paul Murrell has a
2004 Mar 03
8
need help with smooth.spline
Dear R listers,
When using smooth.spline to interpolate data, results are generally
good. However, some cases produce totally unreasonable results.
The data are values of pressure, temperature, and salinity from a
probe that is lowered into the ocean, and the objective is to
interpolate temperature and salinity to specified pressures. While
smooth.spline provides excellent values at the
2001 May 31
2
windows nt/access other directories/ attach/system
Colleagues
----------------------------------
System info:
R version rw1022 on NT
ESS v. 5.1.18 using emacs ver. 20.4
----------------------------------
As recommended, I keep separate directories for projects, but also use
separate sub-directories for types of data (e.g. different oceanographic
instruments) within projects.
My problem is that I often need to access the objects and data (not
2007 Oct 18
5
vector graphics/ ungroup and edit in CorelDraw
...oing
something odd in the production of my postscript files, they look fine
elsewhere, and print well, so I don't think there is a problem.
Can anyone tell me how to produce vector graphics in R that can be
ungrouped for editing in CorelDraw?
Best fishes
Sam
--
Sam McClatchie,
Fisheries oceanographer
Southwest Fisheries Science Center, NOAA,
8604 La Jolla Shores Drive
La Jolla, CA 92037-1508, U.S.A.
email <Sam.McClatchie at noaa.gov>
work phone: 858 546 7083
Cellular: 858 752 8495
Research home page <http://www.fishocean.info>
/\
...>><xX(?>...
2002 Aug 21
0
Population dynamicist job in Queensland, Australia
My apologies for he very short time before things close, but it's not my
fault. If necessary get your hat in the ring by Friday and see to the
niceties later, may I suggest.
This is a vacancy in my group in Cleveland. The work is interesting and the
challenges large.
Bill Venables.
----------------------------------------------------------------------------
Division of Marine Research
2003 Apr 15
1
About kruskal.test
...s(z) # like in octave package
ans=
6 7 3 3 3 3 3
sum(ranks(z))
ans= 28
###
then apply multiple comparisions for many other data
SE<-sqrt(n*(n*k)*(n*k+1)/12) # according Zar,JH. Bioestatistical
# Analysis sec.12.6, on pg. 199
Thanks for any helps
Marcelo A. BRUNO
--# Oceanographer #
--# FURG - Dpto.Oceanografia #
--# CP 474 - RIO GRANDE - RS #
--# CEP 96.200-000 BRAZIL #
##############################
2005 Sep 26
1
k-d tree for loess
I am exploring the use of loess for oceanographic applications and would
like to plot the locations (longitude and latitude) points where the models
(salinity~temperature*longitude*latitude,parametric="temperature") are
fitted. Chambers and Hastie(1993) explains the locations are nodes of a
k-d tree. but I cannot find anything about accessing this information. It
would be useful to
2014 Aug 14
0
Wildlife Statistician/Spatial Modeler
Wildlife Statistician/Spatial Modeler ? Silver Spring, MD
Seeking a Wildlife Statistician/Spatial Modeler with demonstrated
experience fitting advanced statistical spatial/spatiotemporal models to
wildlife survey data. The statistician/modeler will conceive and execute
spatial analyses and generate predictive maps of coastal and marine species
distributions to support coastal planning.
The
2003 Jul 01
2
Computations slow in spite of large amounts of RAM.
Hi all,
I am a beginner trying to use R to work with large amounts of
oceanographic data, and I find that computations can be VERY slow. In
particular, computational speed seems to depend strongly on the number
and size of the objects that are loaded (when R starts up). The same
computations are significantly faster when all but the essential
objects are removed. I am running R on a machine
2007 Oct 22
1
question on axis box with asp=1
I've been using (and loving) R for quite a while now, but I have to
admit that something simple is still stumping me.
The question is how I can control the box within which a plot is
drawn, in cases where I'm controlling the aspect ratio with the "asp"
argument.
The problem comes up in pdf() and png() output formats, but also with
interactive windows, and so I'll
2007 Oct 12
1
Differencing data by groups
Colleagues,
I am analyzing data collected during oceanographic cruises. We have
conducted many cruises over the last decade. On each cruise we visit ~50
stations. At each station (termed EventNum)we lower an instrument that
measures depth, temperature, salinity and oxygen every few seconds as it is
lowered through the water. Data from all EventNums on all cruises are
stacked, generating a data
2013 Jan 18
1
lattice: loess smooths based on y-axis values
...ages of barnacle larvae from 5 species. Each panel of the plot represents a different stage, while different loess smoothers within each panel should represent different species.
However, I would like depth to be on the y-axis and abundance to be on the x-axis, because this is more intuitive as an oceanographer. The smoothing curves would then represent the abundance profiles with depth of the larvae. I have tried just switching depth and abundance in the plot formula/coding, but this means that the loess smoother is based on averaging depth values for each abundance, which means that the curves give mult...
2003 Mar 12
0
job opportunity
The University of Miami's Rosenstiel School of Marine and Atmospheric
Sciences (RSMAS) is seeking a research associate to work with
hydrographic data. The objective of the project is to develop
statistical models for estimating salinity and density from
observations of temperature together with knowledge of location and
time. Because the relationship between salinity and temperature can
be
2004 Jan 30
0
coupled statistical models
Can someone point me to the appropriate functions for
fitting multiple statistical models that are coupled
to each other.
The data are measurements of salinity s and temperature t
at stations id and pressures at p as well as surface elevations h
at stations id. The problem is, for any new station, to estimate
s at all p, given t at all p and given h.
If h is ignored, the for each p, there
2007 Nov 05
0
vector graphics/ SVG plots via RSvgDevice
...scape, nor converted to EPS using Image Magick (suggesting
failure somewhere?). I'm not criticizing the packages here, just making
an observation. I can either create smaller bathymetry and coastline
files, or use the big linux beast downstairs.
Best fishes
Sam
--
Sam McClatchie (Fisheries oceanographer, SWFSC, NOAA)
& Elena Turin (Internal controls accountant, UCSD)
work: SWFSC, 8604 La Jolla Shores Drive, La Jolla, CA 92037-1508, USA
home: 12723 Salmon River Rd, San Diego, CA 92129, USA
web: <http://www.fishocean.info>
Sam's cell: 858 752 8495
Elena's cell: 858 752 8689...
2007 Dec 12
1
how to shorten elements in a data frame?
I have a data frame ("res$data" in the example below), and I'd like to walk
through it, doing an approx() to interpolate each element in turn based on
the value of the item named "pressure" that is in the data.frame.
I've put some code below. I had hoped that the commented-out "length() <-"
line would let me adjust the lengths of the items, but that has
2007 Apr 26
1
spatial/ patches and gaps/ SADIE
...adie/SADIE_home_page_1.htm> might be
useful, and am wondering if anyone has implemented this analysis method
in R? I have failed to find any implementation on the R-site search,
through google, or looking at the R packages browse by topic page.
Best fishes
Sam
--
Sam McClatchie,
Fisheries oceanographer
Southwest Fisheries Science Center, NOAA,
8604 La Jolla Shores Drive
La Jolla, CA 92037-1508, U.S.A.
email <Sam.McClatchie at noaa.gov>
work phone: 858 546 7083
Cellular: 858 752 8495
Research home page <http://www.fishocean.info>
/\
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