Re: [R] Plot maps with R

2012-01-11 Thread hwright
Dear Alex
Two other packages that create maps are:
 maps
 mapproj


alaios wrote
 
 Dear all I would like to use R and make some maps.
 I want to have strict control, over the details of the produced map, like
 remove borders, city names, add markers, add labels.
 
 Is there any package apart Rgooglemaps that can do something like that?
 
 B.R
 Alex
 
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-
---
Heather A. Wright, PhD candidate
Ecology and Evolution of Plankton
Stazione Zoologica Anton Dohrn
Villa Comunale
80121 - Napoli, Italy
--
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.


Re: [R] R endnote entry

2011-12-01 Thread hwright
1. May I suggest that you try Mendeley for bibliographic management
2. There are also citations for specific R packages when you download each
version.

Let's use the ade4 package as an example:
http://cran.r-project.org/web/packages/ade4/index.html
if you selection citation info the corresponding bibtex input has been
provided.

 @Article{,
title = {The ade4 package: implementing the duality diagram for
  ecologists},
author = {S. Dray and A.B. Dufour},
journal = {Journal of Statistical Software},
year = {2007},
volume = {22},
pages = {1-20},
number = {4},
  }

This is a reliable way to deal with references in other programs ie:
LaTeX...etc. I save all my references as bibtex into mendeley and then have
a subfolders for R analysis/methods that contain the package citations.

Using a .txt (bibtex file made from the ade4 package citation), my inserted
citation in a word document from Mendeley looks like this: (R Development
Core Team, 2011)
and the formal reference in the bibliography is: R Development Core Team.
2011. R: A Language and Environment for Statistical Computing.

If however, you are still determined to use endnote, then you have 2 ways to
configure your reference,  manually add a reference by copy/paste the
correct title from the citation, etc. Then configure your .ens style for the
appropriate journal, etc. If you insert the citation and it becomes R.D.C.T
then it's likely the original input is fine and you have to configure your
style output.

good luck!




-
---
Heather A. Wright, PhD candidate
Ecology and Evolution of Plankton
Stazione Zoologica Anton Dohrn
Villa Comunale
80121 - Napoli, Italy
--
View this message in context: 
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__
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and provide commented, minimal, self-contained, reproducible code.


Re: [R] How to extract information from the following dataset?

2011-05-12 Thread hwright

I have the following data set, in a csv file, looks like the following:

Jan 27, 2010  16:01:24,000 125 - - -
Jan 27, 2010  16:06:24,000 125 - - -
..
The first few columns are month, day, year, time with OS3 accuracy. And the
last number is the measurement I need to extract.
I wonder if there is a easy way to just take out the measurements only from
a specific day and hour
-- 
Xin Zhang
Ph.D Candidate
Department of Statistics
University of California, Riverside
---

I use strptime to configure the date format in my times series dataset.
First check to see how the dates are read.
For example:
# check the structure
str(your_file)
'data.frame' ...etc
This tells me that my original date is a factor but not in POSIXlt format.

#check your column dates
head(your_file)
[1] 1984-01-26 1984-02-09 1984-03-01 1984-03-15 1984-03-29
1984-04-12
These are discrete column dates.

#convert your date format
your_file$date- strptime(your_file$date,%m/%d/%Y)
call ?strptime for options

Example:
For a specific day or hour, strptime would utilize:
strptime(your_file$date,%d/%I) for day and hour.

Once you extract the type of date format you want, run str(your_file) again
to confirm the format change.
Does this answer your question?
Best,



-
---
Heather A. Wright, PhD candidate
Ecology and Evolution of Plankton
Stazione Zoologica Anton Dohrn
Villa Comunale
80121 - Napoli, Italy
--
View this message in context: 
http://r.789695.n4.nabble.com/How-to-extract-information-from-the-following-dataset-tp3516752p3516952.html
Sent from the R help mailing list archive at Nabble.com.

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and provide commented, minimal, self-contained, reproducible code.