Hi Keith,
Perhaps you do not want to go with calendar weeks:
365/7 = 52.14
as there are not an even number of weeks in a year, you may want to
plot by week from your initial observation. As you are using as.Date,
you could simply calculate weeks as:
data$Week<-1+as.numeric(data$Date - data$Date[
Hello all, I did not attach data as this is probably simple answer that I
cannot find.
I am collecting daily data and would like to plot the data by week but now
that we are into the new year, my plots started over with 01 after the last
week of the year. How can I continuously keep adding weeks
Quite agree with Jeff Newmiller and Bert Gunter.
The error you get (" 'by' must specify a uniquely valid column") is a
very common mistake when the function merge is misused. Although, the
function merge is the good choice. Have you read the manual of the
function sending the command `?merge`.
I think of the methods of as.data.frame as a helper functions for
data.frame and don't usually call as.data.frame directly. data.frame()
will call as.data.frame for each of its arguments and then put together the
the results into one big data.frame.
> for(method in
c("as.data.frame.list","as.data
To me the interesting difference between matrix() and as.matrix() is
that as.matrix() retains the argument names as the rows names of the
result.
> tmp <- structure(1:3, names=letters[1:3])
> tmp
a b c
1 2 3
> matrix(tmp)
[,1]
[1,]1
[2,]2
[3,]3
> as.matrix(tmp)
[,1]
a1
b2
Hi Sasha,
I'll take a wild guess that your column names have periods (.)
replacing the spaces in the names you use:
species occurrence -> species.occurrence
The error message means that R can't find the variable name you have
used in the "by" argument. The second wild guess is that your column
na
On 2/6/19 12:27 PM, Jeff Newmiller wrote:
I have no idea about "why it is this way" but there are many cases
where I would rather have to use backticks around
syntactically-invalid names than deal with arbitrary rules for
mapping column names as they were supplied to column names as R wants
th
I have no idea about "why it is this way" but there are many cases where I
would rather have to use backticks around syntactically-invalid names than deal
with arbitrary rules for mapping column names as they were supplied to column
names as R wants them to be. From that perspective, making the
r-Help Form
I'm working on a "Time-Series Calendar Heatmap" using the following code.
ggplot(myData, aes(monthweek, weekdayf, fill = myData $adjusted)) +
geom_tile(colour = "white") + facet_grid(year(myData $date)~monthf) +
scale_fill_gradient(low="red", high="green") +
xlab("Week of
Consider the following:
set.seed(42)
X <- matrix(runif(40),10,4)
colnames(X) <- c("a","b","a:x","b:x") # Imitating the output
# of model.matrix().
D1 <- as.data.frame(X)
D2 <- data.frame(X)
names(D1)
[1] "a" "b" "a:x" "b:x"
names(D2)
[1] "a" "b" "a.
Show us your code! (as the posting guide below requests. Please read the
posting guide).
Bert Gunter
"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Tue, Feb 5, 2019 at 10
There are many examples of how to do this properly on the web, and many ways
you could have failed to follow those examples. You need to be much more
specific (using actual R code) about what you did in order for us to help you
get past your specific error. [1][2][3]
You will also avoid the wha
One thing about POSIXct or POSIXlt... you always need to address the issue of
timezone. If your timestamp data are simple (no daylight savings) you may be
able to get away with a simple
Sys.setenv( TZ="GMT" )
sometime in each R session prior to converting anything to this type (e.g at
the begi
Dear All,
I would like to merge two data sets however I am doing something wrong...
1 data set contains 2 columns of 'species occurrence'(1 column) in Germany
and 'species names' (2 column).
and the second one names of 'Red list species'(1 column) and 'species
status' (2 column).
so I would like
On 2/5/19 6:06 AM, Johannes Møllerhagen wrote:
Hello there! I am a master student working on my master thesis, and I am trying
to convert some data to xts so I can apply a highfrequency package to it.
At the moment I am trying to use a POSIXct function. I am quite new at this
program and I a
Hard to say without knowing what dat looks like.
Can you show us a small sample, perhaps via dput( head( dat)) ?
See ?dput, ?head for details.
A guess would be that dat is a data frame and not a character string, but
Bert Gunter
"The trouble with having an open mind is that people keep c
Hello there! I am a master student working on my master thesis, and I am trying
to convert some data to xts so I can apply a highfrequency package to it.
At the moment I am trying to use a POSIXct function. I am quite new at this
program and I am having some issue. The file is attached.
The c
Thanks Rui and Ivan, works perfectly...
Andras
On Monday, February 4, 2019, 4:18:39 PM EST, Rui Barradas
wrote:
Hello,
Like this?
Map('[', listA, lapply(listB, '*', -1))
Hope this helps,
Rui Barradas
Às 21:01 de 04/02/2019, Andras Farkas via R-help escreveu:
> Hello everyone,
>
>
The latest version of the package asciiSetupReader includes a number of
major improvements and bug fixes. This package lets you read in .dat+.sps
and .dat+.sas pair files.
See the following for an overview of the package:
https://jacobkap.github.io/asciiSetupReader/
For a list of changes please
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