Displaying 20 results from an estimated 4000 matches similar to: "Fwd: randomized block design analysis in R"
2009 Jul 30
0
randomized block design analysis PROBLEM
Dear All user,
Hello,
I'm a student and I have some trouble with the experimental
(columns-experiments) design of my project. I use a randomized block design
with 4 treatments including a control. For each treatment, I use 3
replicates and 3 blocks.
The treatments are:
-T1 = COD (300 mg/Lit) COD=chemical oxygen demand
-T2 = COD (200 mg/Lit)
-T3 = COD (100 mg/Lit)
-T4 = COD (0 mg/Lit) as
2009 May 04
1
Randomized-complete blocks design and R
Hi,
I am new in R.I am trying to analysis of variance for Randomized-complete
blocks design. I have 4 treatments and 3 replication,
Without intraction.then .I is going to use LSD test or Duncan test for
comparison between average values of treatments.
I want to know, is there any significant change between treatment and
between weeks? Because I did experiment for 8 weeks.
I am not
2005 Mar 17
2
Repeated Measures, groupedData and lme
Hello
I am trying to fit a REML to some soil mineral data which has been
collected over the time period 1999 - 2004. I want to know if the 19
different treatments imposed, differ in terms of their soil mineral
content. A tree model of the data has shown differences between the
treatments can be attributed to the Magnesium, Potassium and organic
matter content of the soil, with Magnesium being the
2009 Jun 23
2
Long to wide format without time variable
Hi all,
I am trying to convert a data set of physician death codings (each individual's cause of death is coded by multiple physicians) from long to wide format, but the "reshape" function doesn't seem to work because it requires a "time" variable to identify the sequence among the repeated observations within individuals. My data set has no order, and different
2012 Mar 26
2
copy the columns based on the code
Hello,
I have two different dataset, and wanted to join the two.
For example I have a table of codes of cities, and other with with the
codes of travels, [source for the destine].
what he wanted was to have a new data.frame with all the information
city<-data.frame(city="Barcelona",cod=1)
city<-rbind(city,data.frame(city="Madrid",cod=2))
2011 May 19
2
Separating boot results
Good Morning,
I'm having what I hope to be a simple problem. I am generating bootstrap
confidence intervals using package (boot) - which works perfectly. The issue
I am having is getting the results into a format which I can write out to a
database. To be clear I am having no problems generating the results, I just
need to convert the format of the results such that I can store the results
in
2010 Jan 20
1
Merge and join data
Hi,
I'm looking to combine two data frames. Several of the columns are in
common while the others need to be summed up. The apply functions and
the merge functions don't seem to be working. I've included a basic
example of what I'm trying to do below. Thanks!
Sean
data.frame1<-as.data.frame(matrix(c('winter','dredge','515',100,150),1,5))
2010 Nov 04
5
Sorting data from one column with strings
Hello,
I have tried to find this out some other way, but unsuccessful I have to
try this list.
I assume this should be quite simple.
I have a dataset with 4 columns, "Sample_no", "Species", "Nitrogen",
"Carbon" in csv format. In the species column I have many different
species with varying number of obs per species
Eg
"Sample_no"
2007 Sep 21
3
Standardize environment between specs containing class defs
I have some specs that involve the use of eval and class definitions to
test code generation. I want to always start with a clean slate so none
of my tests fail or succeed incorrectly due to artifacts left over from
previous specs.
Example of my situation
Spec 1 defines
class Fish
class Cod < Fish
Spec 2 defines
class Animal
class Cod < Animal
In this situation the
2006 Nov 22
1
differences between aov and lme
Hi,
we have a split-plot experiment in which we measured the yield of crop
fields. The factors we studied were:
B : 3 blocks
I : 2 main plots for presence of Irrigation
V : 2 plots for Varieties
N : 3 levels of Nitrogen
Each block contains two plots (irrigated or not) . Each plot is divided
into two secondary parcels for the two varieties.
Each of these parcels is divided into three subplots
2008 Nov 14
2
GAM and Poisson distribution
Hi -I'm running a GAM with 7 explanatory variables with a Poisson error
structure. All of the variables are continuous so I'm getting error
messages in R.
cod.fall.full.gam.model<-gam(Kept.CPUE~s(HOUR)+s(LAT_dec)+s(LONG_dec)+s(meantemp_C)+s(meandepth_fa)+s(change_depth)+s(seds),
data=cod.fall.version2,family=poisson)
In dpois(y, mu, log = TRUE) ... : non-integer x = 5.325517
2010 Jan 03
3
R2HTML Report number format, or Better Way?
Here I am again with question I'll feel foolish for asking, when I
see the answer.
I'm trying to produce a report and here's where I get stuck:
How do I get R2HTML to produce the same number format?
Particularly remove the decimal places for Par and Sal.
Are there better methods to produce this type of report?
Thanks,
L.A.
R version 2.10.0 XP
2012 May 29
1
problems with xlim in plot.zoo() and window()
I'm trying to get a minimally intuitive way of plotting zoo objects
extracted for given periods of time
I do:
> plot(alyL32007z$NEE_st,col=cod,type="b",pch=18,xlim=time(alyL32007z)[c(3000,15000)])
and get a correct plot but the expression for xlim is hard to read by humans.
I try
> time(alyL32007z)[c(3000,15000)]
[1] "2007-03-04 11:30:00 UTC" "2007-11-09
2004 Aug 13
2
lapply problem
R-help,
I wish to replace NULL elements(or missing) in the following list :
> z2
$cod
mean sd
62.56190 12.65452
$haddock
mean sd
36.61490 11.50365
$ling
mean sd
86.17949 20.43587
$saithe
mean sd
50.275847 5.453606
$whiting
NULL
$"norway pout"
mean sd
13.739623 1.393104
$"great silver smelt"
mean
1997 Dec 19
1
R-beta: a bug in the lm function ?
I ran a function called BoxCox, taken from the book by Venables and
Ripley, for checking the need for power transformation. This function
works fine using the version 0.50 of R, but gives an error message
with version 0.60.
The lm function in version 0.60 is different from that in version 0.50.
Is there a bug in the new lm function?
Kung-Sik Chan
>
2009 Mar 18
2
shutdown by o2net_idle_timer causes Xen to hang
Hello,
we've had some serious trouble with a two-node Xen-based OCFS2
cluster. In brief: we had two incidents where one node detects an idle
timeout and shuts the other node down which causes the other node and
the Dom0 to hang. Both times this could only be resolved by rebooting
the whole machine using the built-in IPMI card.
All machines (including the other DomUs) run Centos 5.2
2008 Nov 21
1
Problem with data.frame()
Given
> str(x)
'data.frame': 5284 obs. of 5 variables:
$ COD : chr "0800101001" "0800101002" "0800101003" "0800101004" ...
$ 0-4 : num 79 215 84 58 127 134 15 122 101 99 ...
$ 5-9 : num 76 180 32 56 81 106 10 112 128 96 ...
$ 10-14: num 68 145 39 46 78 81 8 92 142 107 ...
$ 15-19: num 73 170 49 52 103 77 10 116 129 129 ...
I
2011 Oct 04
2
Adonis and nmds help and questions for a novice.
Hi,
forgive me if someone has already posted about this but I have had a look and cannot find the answer, also I am very new to R and been getting the grips with this.
I have been trying to use Adonis to find out if there are significant difference between groups on data that I have analyses with NMDS, and have been struggling with getting this to work and understanding what is going on. I am
2010 Feb 25
1
tabla de datos...
COD.EST VARIABLE AÑO DIA ENERO FEBRERO MARZO ABRIL MAYO JUNIO JULIO AGOSTO
SEPBRE OCTUBRE NOVBRE DICBRE
1 2501001 PT 1986 1 NaN NaN NaN NaN 2.0 .0 .0
9.0 NaN NaN NaN NaN
2 2501001 PT 1986 2 NaN NaN NaN NaN .0 11.0 19.0
.0 NaN NaN NaN NaN
3 2501001 PT 1986 3 NaN NaN NaN NaN 11.0 3.0 .0
.0 NaN NaN
2011 Jun 22
1
Time-series analysis with treatment effects - statistical approach
Hello all R listers,
I'm struggling to select an appropriate statistical method for my data set.
I have collected soil moisture measurements every hour for 2 years. There
are 75 sensors taking these automated measurements, spread evenly across 4
treatments and a control. I'm not interested in being able to predict soil
future soil moisture trends, but rather in knowing whether the