Displaying 20 results from an estimated 22 matches for "silvicultur".
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silviculture
2007 Nov 27
2
str() options
Hello,
Is there a way to have str() and ls.str() return all factor levels?
Thanx, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ofri.mnr.gov.on.ca
2011 Jul 29
5
coordinates from locator function in POSIXct format
...rdinates.
The x coordinates are not in a POSIXct format, I guess R is
returning the x coordinates in a time unit as miliseconds
or something else.
Do anyone how to get the x coordinates directly in a
POSIXct format?
Thanks in advance!
Cristabel.
Cristabel Dur?n Rangel. PhD Student.
Institute of Silviculture. Faculty of Forest and
Environmental Sciences. University of Freiburg.
Germany
Telf: +49 (761) 203 8604 (ofc)
?Man lernt die Physiognomie einer Landschaft desto besser
kennen, je genauer man die einzelnen Z?ge auffa?t, sie
untereinander vergleicht und so auf dem Wege der Analysis
den Quellen der...
2008 Oct 10
2
Fatal error: unable to restore saved data in .RData
...1 grid_2.7.2 svMisc_0.9-5 tools_2.7.2
sysname release version
machine
"Windows" "XP" "build 2600, Service Pack 2"
"x86"
# system info:
###
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ontario.ca/ofri
2007 Nov 20
1
Process multiple columns of data.frame
...#39;] <- 0
Bout[is.na(Bout$ht.n), 'ht.n'] <- 0
Bout[is.na(Bout$dbh.n), 'dbh.n'] <- 0
Would the form of such a command be different
between numeric, character and factor columns?
. . . between data.frames and matrices?
Thanx, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ofri.mnr.gov.on.ca
2008 Jun 19
3
YAPMQ - Yet Another PlotMath Question
...having trouble finding (remembering) how to pass values into text
functions in plots, as demonstrated by:
slope <- 45 ; plot(1:10) ; text(2, 7, labels = expression(45~degree)) ;
text(2, 5, labels = paste(bquote(.(slope)), expression(degree)))
Thanx, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ontario.ca/ofri
2008 Feb 12
3
Reorder data frame columns by negating list of names
...ew positions, something like:
> xxx[,c( c('b', 'd', 'h'), -c('b', 'd', 'h') )]
Error in -c("b", "d", "h") : invalid argument to unary operator
Suggestions? and Thank you, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ofri.mnr.gov.on.ca
2008 May 06
2
list manipulation
...98 768 7 oplt tree bd ht spr stat dam
bn1999 654 7 oplt tree bd ht dbh stat dam
bn2003 1407 9 oplt tree bd94 ht94 ht99 ht02 ht03 stat dam
[[1]]
NULL
[[2]]
NULL
[[3]]
NULL
[[4]]
NULL
[[5]]
NULL
[[6]]
NULL
[[7]]
NULL
[[8]]
NULL
Thanx, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ofri.mnr.gov.on.ca
2008 Apr 09
3
Changing default plot behaviour
...marks inside on all axes, labels only on two
(arbitrary?) sides) without needing the five additional commands each
time?
plot(1:10, axes=FALSE)
axis(1, tcl=0.5)
axis(2, tcl=0.5)
axis(3, tcl=0.5, labels=FALSE)
axis(4, tcl=0.5, labels=FALSE)
box()
Thanx, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ofri.mnr.gov.on.ca
2008 May 26
1
SciViews and Tinn-R installation problem
...2-41 proto_0.3-8 reshape_0.8.0 car_1.2-8
[8] svSocket_0.8-9 svIO_0.8-9 R2HTML_1.58
svMisc_0.8-9 svIDE_0.8-9
loaded via a namespace (and not attached):
[1] lattice_0.17-8 svGUI_0.8-9 svViews_0.8-9
Thanx, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ontario.ca/ofri
2008 Dec 09
2
assign()ing within apply
...ot;mh" "iw" "or"
"mh" "sm" "be" "be" "be" "or" "or"
, I just can't remember how to get them back into the original dataframe
objects. Suggestions?
Thanx, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ontario.ca/ofri
2009 Jul 10
1
Degree of freedom in the linear mixed effect model using lme function in R
...uld I do to ensure that I have correct results from the summary function applied to my model (correct t- and p-values)? Thanks in advance.
With regards,
Sidzabda Djibril Dayamba,
Swedish University of Agricultural Sciences
Faculty of Forest SCience
Southern Swedish Forest Research Centre
Tropical Silviculture and Seed Laboratory
PO Box 101
SE - 230 53 Alnarp,
Sweden
Tel: +46 76 83 515 70 (Mobile)
+46 40 41 53 95 (Office)
[[alternative HTML version deleted]]
2008 Jan 17
2
Converting plots to ggplot2
...sysname release
"Windows" "NT 5.1"
version machine
"(build 2600) Service Pack 2" "x86"
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ofri.mnr.gov.on.ca
2006 Sep 06
1
Help on estimated variance in lme4
...ResCondCorp -0.309 -0.010 0.302 -0.032
###
Here is the error message:
###
Warning message:
Estimated variance for factor 'factor(cdrgsaou2$ids)' is effectively zero
in: LMEopt(x = mer, value = cv)
###
Thank you very much by advance for any help.
J?r?me Lema?tre
Ph.D. student
Silviculture-wildlife research chair in irregular boreal forests
& D?partment of biology,
Faculty of Sciences and Engineering
Alexandre-Vachon building
University Laval
Quebec, QC G1K 7P4
Phone : (418) 656-2131 poste 2917
Office : VCH-2044
Email: jerome.lemaitre.1 at ulaval.ca
2007 Dec 20
1
Available environment variables
...variables? I
would like to know if there is an existing convention for any arbitrary
process that I may try to do without reinventing the wheel. This same
question could apply to options() other than those included with a
standard installation.
Thanks, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ofri.mnr.gov.on.ca
2008 Apr 10
1
Recovering SPlus GraphSheets
Hello,
Is it possible with R to recover the contents of SPlus GraphSheets
(*.sgr) without access to SPlus?
Also, some of the .sgr files may have multiple pages.
Thanx, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ofri.mnr.gov.on.ca
2008 Jun 17
0
echo Rprofile.site on startup
...es the same process work for all of Rprofile.site, .Rprofile, .First,
.Last (, etc.?) profile files?
Is there a 'best practice' on which of the profile files one should use?
I use only the Rprofile.site since I am the only user on my PC.
Thanx, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ontario.ca/ofri
*************************************
Sys.info()
sysname release
version machine...
2011 Sep 23
1
Envfit, inconsistant result?
...quot;Rv_borde.",
"Aristotelia as border tree (%)")]
# the Envfit calculation
exp_flor1 <- envfit(gap_flor_NMDS_chord, explain1, permu = 999, na.rm=T)
Thanks a lot for your help, comments and input!
-----
Rodrigo Vargas G.
-----------------------------------------
Silviculture Institute
Freiburg University
--
View this message in context: http://r.789695.n4.nabble.com/Envfit-inconsistant-result-tp3836585p3836585.html
Sent from the R help mailing list archive at Nabble.com.
2008 Jun 04
1
ggplot questions
...l be plotted across each oplt in the
views below and each rplt in expanded views.
All locations (rplt centers, tree positions) are recorded as azimuth and
distance from their respective plot centers, hence my inclination to use
polar coordinates.
Thanx, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ontario.ca/ofri
2008 Oct 09
1
YALAQ - Yet Another LApply Question
..."yrc",
"az", "dist", "com"), row.names = c(366L, 758L, 335L, 285L, 600L,
61L, 583L, 283L, 1184L, 671L, 1422L, 818L, 930L, 1006L, 1331L,
1299L, 447L, 996L, 343L, 757L), class = "data.frame")
# sample data
###
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ontario.ca/ofri
2008 Feb 08
1
Can I index a dataframe with a reference from/to a second dataframe?
...t;, "22", "23", "24", "25",
"26", "27", "28", "29", "30", "31", "32", "33", "34"), class =
"data.frame")
Thanks, DaveT.
*************************************
Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca
http://ofri.mnr.gov.on.ca