search for: tropic

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2020 Oct 08
2
RStudio question
I'm solving the following problem: Create a variable (column) in the ?wf? dataframe named ?Zone? that takes value of ?tropic? if Latitude is less than or equal to 30, or ?non-tropic? for Latitude greater than 30. Show you Zone variable. Latitude is a column of my dataframe. I don't know the sintaxis and the process to create the column. [[alternative HTML version deleted]]
2012 Aug 15
3
[Bug 53519] New: Missing bits of geometry in Unigine tropics
https://bugs.freedesktop.org/show_bug.cgi?id=53519 Bug #: 53519 Summary: Missing bits of geometry in Unigine tropics Classification: Unclassified Product: Mesa Version: git Platform: Other OS/Version: All Status: NEW Severity: minor Priority: medium Component: Drivers/DRI/nouveau AssignedTo: nouveau at lists.freedesktop....
2014 Mar 07
0
Abril Pro Ruby 2014 - The Tropical Ruby Conference
Hello everybody, On April 24th to 27th the biggest Ruby Conference on the Northeast of Brazil will be happening, Abril Pro Ruby <http://abrilproruby.com/>. We would like to invite you to be part of the event and share you experiences with great rubists from all over the world in Porto de Galinhas, very close to Recife. Speakers from everywhere are already confirmed to the event. Take a
2007 Apr 04
6
transition matrices
...n be done manually by applying subjective 'prior knowledge' of sequences, however I would like to have an algorithmic/objective method to generate at least a first cut ... Any suggestions or hints (even just thoughts) would be much appreciated, Richard Rowe Dr Richard Rowe Zoology & Tropical Ecology School of Tropical Biology James Cook University Townsville 4811 AUSTRALIA ph +61 7 47 81 4851 fax +61 7 47 25 1570 JCU has CRICOS Provider Code 00117J
2007 Jan 01
4
if ... problem with compound instructions
...n <B> else <C> should work for compound <B> ... ie that the bracket (X[i,3] <- NA; X[i,4] <-NA) should be actioned 1) any elegant solutions to what must be a common task? 2) any explanations for the ';' effect ? thanks Richard Rowe Dr Richard Rowe Zoology & Tropical Ecology School of Tropical Biology James Cook University Townsville 4811 AUSTRALIA ph +61 7 47 81 4851 fax +61 7 47 25 1570 JCU has CRICOS Provider Code 00117J
2007 Dec 20
3
mle
...39;t understand some of the functions. Do you know where can I find some explicit tutorial about a poisson regression with MLE or, maybe better, about maximum likelyhood estimation? Best wishes Antonio Gasparrini Public and Environmental Health Research Unit (PEHRU) London School of Hygiene & Tropical Medicine Keppel Street, London WC1E 7HT, UK Office: 0044 (0)20 79272406 Mobile: 0044 (0)79 64925523 www.lshtm.ac.uk/pehru/ antonio.gasparrini at lshtm.ac.uk
2010 Feb 24
1
Remove missing observations
...for year2. If I try wilcox.test(Outcome~Year, paired=T), I receive an error "not the same length". Is there a fast method to remove those subjects with missing outcomes? Thanks for any help. Regards, Denis Aydin _____________________________________________ Denis Aydin, MSc Swiss Tropical and Public Health Institute Socinstrasse 57, P.O. Box 4002 Basel, Switzerland T +41 (0)61 270 22 04 F +41 (0)61 270 22 25 @ denis.aydin@unibas.ch _____________________________________________ Postal address: Denis Aydin, MSc Swiss Tropical and Public Health Institute Socinstrasse 57, P.O. Box...
2007 Oct 03
2
Windows OS, R and unicode
...ll/Ripley examples (Rnews 6/2) do work of course ... so I feel I should be able to do this myself, but after several hours it is time to ask for help). I understand from Google results that users on Mac OS and Linux aren't facing this problem ... Richard -- Dr Richard Rowe Zoology & Tropical Ecology School of Marine & Tropical Biology James Cook University Townsville 4811 AUSTRALIA ph +61 7 47 81 4851 fax +61 7 47 25 1570 JCU has CRICOS Provider Code 00117J
2011 Sep 30
1
need help on forest plot with ggplot
...a)[2:13],y=xx[2:13],ylo=xx[2:13]-1.96*ss[2:13], yhi=xx[2:13]+1.96*ss[2:13]) credplot.gg(d) How should I correct this so that I can fix the order of the rapid tests the way I put in. Thank you in advance. Wirichada (Pongtavornpinyo) Pan-ngum Mathematical Modelling team Mahidol-Oxford Tropical Medicine Research Unit (MORU) Faculty of Tropical Medicine, Mahidol University 420/6 Ratchawithi Rd., Bangkok 10400 Thailand Tel: +66 2 203 6322 Fax: +66 2 354-9169 Email: pan at tropmedres.ac http://r.789695.n4.nabble.com/file/n3858577/image001.png -- View this message in context: http...
2010 Jul 27
6
Eval() or parse() do not work inside function
...bs("data","RECORD") Error in data$RECORD : $ operator is invalid for atomic vectors Repeating the individual commands in the workspace does work though.. Do I need to pass the object data in the arguments for this to work? Thanks, Jorge -- Jorge A. Ahumada Technical Director Tropical Ecology Assessment and Monitoring Network (TEAM) Science and Knowledge Division Conservation International 2011 Crystal Dr. Suite 500 Arlington, VA 22202 Phone: 703-341-2543 Mobile: 202-716-3374 http://www.teamnetwork.org/
2012 Sep 02
1
why variations in accuracy between R to ARCGIS for the same point reprojection?
...ng=CRS("+proj=longlat +datum=WGS84")) and then reprojecting it to Berhmann with: spPointReprj=spTransform(Data,CRS("+proj=cea +lon_0=0 +lat_ts=30 +x_0=0 +y_0=0 +ellps=WGS84")) If I put the two outputs of the reprojections in the same map, they are off by few meters in the tropics by up to 40km in the poles. I decided to investigate how the reprojections are done and my calculations are different from both R and ArcGis: First, I calculated the radious of the Earth in two different ways: =Re * (1 - e^2)/ (1 - e^2 *SIN(RADIANS(Latitude))^2)^(3/2) =Re * SQRT(1 - e^2) / (1...
2007 Sep 05
1
ecological meaning of randomForest vegetation classification?
Hi, everyone, I haven't found anything similar in the forum, so here's my problem (I'm no expert in R nor statistics): I have a data set of 59.000 cases with 9 variables each (fractional coverage of 9 different plant types, such as deciduous broad-leaved temperate trees or evergreen tropical trees etc.), which was generated by a vegetation model. In order to evaluate the quality of the vegetation model's output, I want to compare it to a land-cover data set which has 23 different land-cover types (such as needle leaved evergreen forest, dense broad-leaved forest, barren, etc.). A...
2008 Sep 24
2
climatological standard deviation- (question re-posted)
...limatology (12 values), Now, I would like to calculate the corresponding standard deviation, ie the 12 values calculated from the january values, february values, etc. What's the best way for such a calculation ? Regards, Yogesh -- Yogesh K. Tiwari (Dr.rer.nat), Scientist, Indian Institute of Tropical Meteorology, Homi Bhabha Road, Pashan, Pune-411008 INDIA Phone: 0091-99 2273 9513 (Cell) : 0091-20-258 93 600 (O) (Ext.250) Fax : 0091-20-258 93 825 -- Yogesh K. Tiwari (Dr.rer.nat), Scientist, Indian Institute of Tropical Meteorology, Homi Bhabha Road, Pashan, Pune-411008 INDIA Phone: 0091...
2011 May 03
1
Visiting Researcher, species distribution modelling, Cali, Colombia
Dear All, The Decision and Policy Analysis (DAPA) program of the International Center for Tropical Agriculture (CIAT), a not-for-profit agriculture, biodiversity and ecosystems research center, supported by the Consultative Group of International Agricultural Research (CGIAR), with headquarters in Cali, Colombia is looking for a visiting researcher to work on various modeling projects, primari...
2007 Feb 19
1
need help in reading TOMS observed ASCII data file
...and 72 rows (latitudexlongitude) > > > > > > THIRD PROBLEM regriding AOD: > How to regrid 1x1 AOD data on 5x5 grid as O3. > > > Many thanks for yours help. > > Regards, > Yogesh > > -- > Dr. Yogesh K. Tiwari, > Scientist, > Indian Institute of Tropical Meteorology, > Homi Bhabha Road, > Pashan, > Pune-411008 > INDIA > > Phone: 0091-99 2273 9513 (Cell) > : 0091-20-258 93 600 (O) ( Ext.250) > Fax : 0091-20-258 93 825 > -- Dr. Yogesh K. Tiwari, Scientist 'B', Indian Institute of Tropical Meteorolo...
2009 Feb 02
2
logLik for poisson models
...son()) logLik(model) I would like to know what's the exact formula the function logLik uses. I looked at ?extractAIC but I cannot sort it out. Can you please give me an help? Thanks a lot Antonio Gasparrini Public and Environmental Health Research Unit (PEHRU) London School of Hygiene & Tropical Medicine Keppel Street, London WC1E 7HT, UK Office: 0044 (0)20 79272406 - Mobile: 0044 (0)79 64925523 Skype contact: a.gasparrini http://www.lshtm.ac.uk/people/gasparrini.antonio ( http://www.lshtm.ac.uk/pehru/ )
2003 Dec 05
3
Odds ratios for categorical variable
...he levels. I suspect this has something to do with the contrasts statement, but I can't figure it out, and would be very appreciative of any help you can provide. Thank you, Sabrina ______________________________________________________________ Sabrina E. Russo Postdoctoral Fellow Center for Tropical Forest Science - Arnold Arboretum Asia Program Harvard University 22 Divinity Avenue Cambridge, MA 02138 USA 617-496-2380 phone 617-495-9484 FAX srusso@oeb.harvard.edu [[alternative HTML version deleted]]
2007 Nov 26
1
Preserving output of MCMC iterations
...is not very clear - I'm still in the very steep learning curve! I will be happy to clarify further. Thanks in advance for your consideration. Francesco Francesco Checchi Honorary Lecturer, Part-time PhD Student Disease Control and Vector Biology Unit Department of Infectious and Tropical Diseases London School of Hygiene and Tropical Medicine Room 51G6, 49-51 Bedford Square London WC1B 3DP, United Kingdom office +44 (0)20 7927 2336 mobile +44 (0)79 0671 9637 fax +44 (0)20 7927 2918 e-mail francesco.checchi@lshtm.ac.uk [[alternative HTML version deleted]]
2002 Mar 28
2
Is it possible to do Ripley's K and L functions analysis with R?
Dear friends, I am studying the spatial distribution of trees in a tropical swamp forest in Brazil, and the spatial association between the trees and other forest and non forest elements. These are point pattern analysis of mapped data, preferentially done with the L function of Ripley. I have recently discovererd the R-project and would like to know whether it is pos...
2009 Nov 05
2
new help pages in R 2.10.0
...hange in later versions. Or at least, that the user could have the opportunity to choose the help pages he deems more suitable for his purposes. I hope someone could give some details Regards, Antonio Gasparrini Public and Environmental Health Research Unit (PEHRU) London School of Hygiene & Tropical Medicine Keppel Street, London WC1E 7HT, UK Office: 0044 (0)20 79272406 - Mobile: 0044 (0)79 64925523