Displaying 20 results from an estimated 1000 matches similar to: "aggregate question..."
2003 Nov 16
2
prevent conversion to factors in aggregate?
I've been trying to figure out how to prevent a column that is the result of
an aggregate function call so that I can use it in further calculations. For
example, I would like to aggregate the expf for the data.frame by sp
(character) and dbh (double d=rounded to integer) using the command:
> st2 <- aggregate( ntrs$expf, by=list(sp=ntrs$sp,dbh=ntrs$dbh), sum )
> st2$expf <- st2$x
2003 Nov 13
1
creating a "report" table from a set of lists
I've been trying to figure out how to accomplish the following...
I've got a list (returned from a function) and I would like to "cbind()" the
lists together to create a "cross tab" report or simply bind them together
somehow
the function returns a list that looks like the following:
> all$BM
$species
[1] "BM"
$vbar.nobs
[1] 3
$vbar.sum
[1] 54.05435
2001 Dec 08
1
plotting values "by"
I would like to produce a set of values, on the same chart, from an sql
table that is structured like...
species dbh ht expf
DF 1.2 8.9 10.0
DF 2.4 17.3 12.4342
DF 3.1 20.9 56.76
PP 2.3 16.9 100.0
PP 12.8 97.3 40.3
PP 8.2 63.0 98.34
.
.
.
SS blah, blah, blah...
is it possible to, using a single command in the plot command to plot the
different groups on the same plot or will I have to iterate
2004 Nov 29
1
data is getting corrupted
I've been attempting to perform some analysis on a model that was
interfaced with R (R calls a library that takes SEXPs and converts the
data frames into the internal structures of data), and I notice that for
small data.frames the vectors don't get corrupt (n<200-ish). When I pass
in larger data.frames, the vectors will become corrupt. I've been
PROTECTING the heck out of
2003 Nov 06
2
created data doesn't remain when split...
I've been trying to figure out why the following is happening....
I've got some data I'll load in from a file...
rm(list=ls(all=TRUE))
trees <- read.table( "c:/cruisepak/data.txt", header=T)
trees$ct <- 1
And when I create some temp variable, then split the data to perform further
processing, the additional column doesn't maintain the data correctly....
mtrees
2003 Nov 18
1
data.frame subset?
Can someone tell me why this is since I can't seem to find an explination in
the docs or FAQ for this.
Since there are no "BM" in the mtrs data.frame, but only in the "parent"
data.frame (trees), I'm assuming the subset data.frame is still associated
with the original. Is that correct and how would I create a completly
separate data.frame since I'll be using by,
2006 Mar 09
0
variable '%s' was fitted with class... in predict.nls()
I've tried to predict the values from a new data.frame using the
nls.predict function and keep getting the error message:
Error in if (sum(wrong) == 1) stop(gettextf("variable '%s' was fitted with
class \"%s\" but class \"%s\" was supplied", :
missing value where TRUE/FALSE needed
I first thought that it was becuase there may have been something
2002 Feb 28
1
trying to build matrix for tests...
Okay, I stumped. I'm trying to build a matrix or data.frame that consists of
values by group. For example,
resid, group
574 0.536196370873122 E
575 0.93191093696265 E
576 -1.27116094894117 A
577 -1.05159666055027 A
578 0.398273458301184 D
579 0.586373126102573 E
580 0.806575304513802 E
581 0.897258393118338 E
582 0.342393324256838 D
583 0.781245511773227 E
I
2011 Jan 31
1
httpd-access.log parsing and graph construction.
R gurus:
I'm thinking about using R for website traffic analysis but didn't find anything in my web searches specific to R.
If I have the webpages (simple example would contain something like three (3) static pages with a couple of links each) and parse the apache access log file (httpd-access.log), then I can populate the graph representing the website and perform whatever analysis I
2003 Dec 02
3
check WARNING...
I've been developing a package and have been getting the following warning
when running the check command:
* checking S3 generic/method consistency ... WARNING
plot:
function(x, ...)
plot.summaries:
function(trees, sp)
* checking for replacement functions with final arg not named 'value' ... OK
* checking Rd files ... OK
...blah, blah, blah...
* checking examples ... OK
*
2002 Feb 12
1
getting quotes out of matrix?
I've trying to check for model bias. It was recommended to me that I should
break the residuals into n groups and test to see if the mean is different
from zero. What is the best way to generate the groups. I've generated a
matrix that contains the residuals and groups, but the values all have
quotes around them.
1) how do I get rid of the quotes?
2) is this an acceptable method for
2012 Jun 22
1
Vignettes are not being (re)built.
I'm adding a couple of vignettes to an existing package.
When I make a change to the sweave file, and run the check command,
c:\conifers\trunk>R CMD check rconifers
I get the following message(s) in the 00check.log file:
* checking for unstated dependencies in vignettes ... OK
* checking package vignettes in 'inst/doc' ... WARNING
Package vignette(s) without corresponding PDF:
2004 May 12
1
summary table newbie question
I've got a newbie question and I got a little lost in the "table helps".
I've got a data.frame I would like to summarize as a (and pardon for the
lack of correct vernacular) data collection matrix. My data looks like,
stand siteindex age acres pct.acres
1 232 116 45 8477.3105 0.56159458
2 234 121 25 11120.1530 0.73667441
3 235 132 25
2004 Feb 20
1
Sweave not found from MikTeX?
I've been working on a LaTeX document that contains Sweave code and cannot
get MikTeX to find the Sweave.sty file. I've added the c:\rw1081\share\texmf
path in the MikTeX roots (I've ven added the path in the environment
variables ) but to no avail. Is there a trick to getting Sweave installed
correctly when using MikTeX on Windows XP? Do I need to move/copy the
Sweave.sty file to the
2012 Jan 11
2
package DESCRIPTION file and CRAN Task View entries?
I'm in the middle of a long overdue package update, and after seeing the CRAN Task Views I thought there would be an entry, in the DESCRIPTIONS file, for that entry that appears on the package webpage.
For example,
http://cran.case.edu/web/packages/vegan/index.html
Since it's been some time since I've updated the package, I did a little reading (R-exts.pdf) and web searching and
2004 Jan 15
2
plotting predicted values (lines) over data?
I've been trying to plot the predicted values, as a line, over the data for
a simple nonlinear fit with the following commands:
plot( hg ~ ht )
... define some function hg ~ ht + junk ...
... blah, blah, obtain parameter estimates and predicted values, blah...
... then...
lines( sort( $predicted ) ~ sort( ht ) )
which results in a line that isn't smooth (which I knew would happen).
2016 Aug 31
2
mapping calls to exp() to expf opcode
We've got both an sqrtf and an expf opcode in our architecture. If I call
sqrt() on the C side, I see the sqrtf opcode show up in the generated
assembly. However, if I call exp() on the C side, I don't see the expf
opcode show up on the generated assembly, I see a call to an exp function
from libm.
Here's what we've got in our TargetInstrinfo.td file for both of these
2004 Jan 19
1
another wish?
I've wondered why the digest version of the r-devel emails have the messages
as attachments and the r-help-request have all the messages in one email
(which I like MUCH better). Is it possible to send out the r-devel digest
emails in the same format as the r-help-request digest emails?
please, pretty please?
---
Jeff D. Hamann
Forest Informatics, Inc.
PO Box 1421
Corvallis, Oregon USA
2005 Sep 10
1
transparent backgound in lattice plots
I couldn't find this is in the FAQs or in the R archives and I've poked
around the lattice package manual, but...
I've been trying to figure out how to generate graphics files with a
transparent background with the lattice package. The code to generate the
levelplot is fine and I can produce a simple png file with a transparent
background just fine, but I'm not sure how to
2004 May 13
2
xtable without rownames
When I tried to read all the entries (after searching the FAQ) for "row
names xtable", I get
START-INFO-DIR-ENTRY * R FAQ: (R-FAQ). The R statistical system ...
... xtable* Export data to LaTeX and HTML tables. ... For dropping the row
names of a matrix
`x', it may be easier to use `rownames(x) <- NULL', similarly for column ...