Displaying 20 results from an estimated 9000 matches similar to: "function approx interpolation of time series data sets"
2010 Jan 05
3
R matching lat/lon pairs from two datasets?
Hello,
I am trying to match lat/lon from one dataset with the lat/lon from a
second dataset and use that rows data for calculations. I am using
match, but this is finding the first match and not comparing the pair,
how can I determine if the lat/lon are the same? See example below. Is
there a better way to determine to a matching pair of lat/lon values?
Example Datasets:
> data2
2013 Mar 07
1
create vector from indices interpolated values
Readers,
Is it possible to create a plot command based upon the indices of
missing values in a data set?
dataset1<-read.table(text='
10 2
20 NA
30 5
40 7
50 NA
60 NA
70 2
80 6
90 NA
100 9
')
dataset2<-read.table(text='
0.2
0.4
0.1
0.9
0.2
0.3
1.1
0.7
0.9
0.6
0.4
')
The 'approx' function is used to obtain the interpolated values for
'NA' in dataset1.
2013 Feb 14
1
approxfun values
Readers,
According to the help '?approxfun', the function can be used to obtain
the interpolated values. The following test was tried:
> testinterpolation<-read.csv('test.csv',header=FALSE)
> testinterpolation
V1 V2
1 10 2
2 20 NA
3 30 5
4 40 7
5 50 NA
6 60 NA
7 70 2
8 80 6
9 90 9
10 100 NA
>
2009 Dec 01
3
paste name in for loop?
Hello,
I am trying to create subsets of grouped data (by area size), and use
the area size as part of the output name. The code below works for area
(xout) 1 and 50, the other files are given NA for an area.
A simple example:
xout <- c(1,5,10,25,50,100)
for(i in xout) { print(paste("Areal_Ppt_",xout[i],"sqmi.txt", sep="")) }
[1] "Areal_Ppt_1sqmi.txt"
2008 Aug 21
1
problem merging two data sets ( one with a header and one without)
I have two set of data, Data1 and Data2 . Data1 has a header and Data2 does
not. I would like to merge the two data sets after removing some columns
from data2 .
I am having a problem merging so I had to write and read final data and
specify the ?header=F? so the merge can be done by?V1?. Is there a way to
avoid this step. The problem is when I do cbind the FinalData has different
column names
2005 Feb 16
5
scaling axes when plotting multiple data sets
1) When adding additional data sets to a plot using "plot" followed by "lines",
is there a way to automate the scaling of the axes to allow for all data sets
to fit within the plot area?
2) I attempted to solve this by setting
xlim=c(min(c(data1,data2,data3)),max(c(data1,data2,data3)))
however, there are some NAs and Infs in these data sets, and min(data1) and
max(data1) both
2008 Jun 04
4
merging 3 data sets at once
Hi All,
I am looking into merging 3 data sets I know how to do that by merging data1
with data2 and then merging the result with data 3. I was wondering if it
can be done all at once so I tried,
M<-merge(data1,data2,data3, by=?ID?)
It does not work!
Any ideas?
--
View this message in context: http://www.nabble.com/merging-3-data-sets-at-once-tp17658873p17658873.html
Sent from the R help
2008 May 14
4
Accessing items in a list of lists
Using R 2.6.2, say I have the following list of lists, "comb":
data1 <- list(a = 1, b = 2, c = 3)
data2 <- list(a = 4, b = 5, c = 6)
data3 <- list(a = 3, b = 6, c = 9)
comb <- list(data1 = data1, data2 = data2, data3 = data3)
So that all names for the lowest level list are common. How can I most
efficiently access all of the sublist items "a" indexed by the outer
2002 Dec 05
1
Passing options as lists
Hi,
I apologize if this has previously been posted. I've just subscribed to the
R-help digest.
I'm writing a plotting function that uses layout() to plot several different
plots on the same device. This function uses plot(), image(), and a custom
function that uses text(). Each cell of the layout needs different par()
parameters, so what I'd like to do is pass them as lists:
2010 May 28
1
Match 2 vectors
Hi,
I have 2 dataframes of unequal length, and I would like to match a
factor to them so that both dataframes will have the same number of
rows.
example:
# create the 2 dataframes with unequal length
data1 <- data.frame(letters, 1:26)[-c(5,10,19:21),]
data2 <- data.frame(letters, 1:26)[-c(6,9,15:18),]
data2a <- match(data1[,1], data2[,1])
data2b <- data2[data2a,]
When I match
2009 Nov 12
2
redundant factor levels after subsetting a dataset
#I have a data frame with a numeric and a character variable.
x=c(1,2,3,2,0,2,-1,-2,-4)
md=c(rep("Miller",3), rep("Richard",3),rep("Smith",3))
data1=data.frame(x,md)
#I subset this data.frame in a way such that one level of the character
variable does not appear in the new dataset.
data2=data1[x>0,]
data3=subset(data1,x>0)
#However, when I check the levels
2019 Mar 28
2
NFSv4: Using fsid=0 but *not* exporting the root filesystem
Hi,
I would like to use the NFSv4 ability to create a "root" filesystem with
fsid=0, so that I don't have to refer to the whole path of the exported
filesystem when I mount it. However I do *not* want this root
filesystem to be mountable by any host. Is that possible and how?
E.g
Filesystem:
/exports/data1
/exports/data2
/exports/data3
/etc/exports:
/exports
2009 Feb 26
2
Merge question
Hi:
I am a new R user. I have the following question and would appreciate your input
Data1 (data frame 1)
p1,d1,d2 (p1 is text and d1 and d2 are numeric)
xyz,10,25
Data2 (data frame 2)
p1,d1,d2
xyz,11,15
Now I want to create a new data frame that looks like so below. The fields d1 and s2 are summed by the product key.
Data3
p1,d1,d2
xyz,21 (sum of 10 from Data1 and 11 from Data2),40 (sum of 25
2006 Nov 24
1
barplot help needed
hello,
I would like to create the following barplot:
I have 4 different data sets (same length + stddev for each data point)
data1
sd1
data2
sd2
data3
sd3
data4
sd4
now, I'd like to plot in the following way:
data1[1],data2[1],data3[1],data4[1] with it's sd-values side-by-side at
one x-axis label (named "position 1") and each bar in different colors.
2006 Feb 22
2
Merging data
Hello all,
I am fairly new to R and am trying to bring together data from multiple sources. Here is one problem that I cannot seem to crack – I hope somebody can help. Let me simplify the problem: Let’s say I have two datasets: DATA1 and DATA2. I would like to work with all the cases in DATA2. I have additional variables on these cases in DATA1, which is a larger data set with many
2004 Aug 23
2
[ Multiple drives ]
Hello,
I have 3 hdd (120 GB, 120 GB and 80 GB) mounted on
/data1 , /data2 and /data3.
All these drives must be shared via a public access
with Samba.
For the moment, I can only share the 'data1'
directory.
[public]
path = /data1
Is there a possibility to share several disks under
the same account ?
By example :
[public]
path = /data1, /data2, /data3
Then, under Windows, I'd like
2009 Nov 06
1
probem on merge data
Hi there,
data1<-matrix(data=c(1,1.2,1.3,"3/23/2004",1,1.5,2.3,"3/22/2004",2,0.2,3.3,"4/23/2004",3,1.5,1.3,"5/22/2004"),nrow=4,ncol=4,byrow=TRUE)
data1<-data.frame(data1)
names(data1)<-c("areaid","x","y","date")
data1
areaid x y date
1 1 1.2 1.3 3/23/2004
2 1 1.5 2.3 3/22/2004
3 2
2012 Apr 12
4
How insert data to a column in existing csv file?
I was working with some excel files with a lot of data.
And by hand it is impossible to handle them.
So they are now converted to .csv.
With headers above the columns, like:
Data1, Data2, Data3
But now I needed to calculate the log2 value of Data1 and place the result
under Data2.
I can't find how to do that.
Does anyone else know?
I have the log2 values, but how do I get then
2010 Mar 24
3
How to use the paste function to create an already used variable
Hi there,
I have the following problem
Four data frames exist:
data1
data2
data3
data4
Now I want to write a loop and temporarily store the data1, data2,
data3, data4 in a variable called data.
I tried the following...
for (i in 1:4) {
Data <- paste("data",i,sep="")
...
..
}
but it doesn't function. I think the problem is the definition of the
mode of the pasted
2016 Feb 05
3
[PATCH] inspect: get windows drive letters for GPT disks.
This patch updates the guestfs_inspect_get_drive_mappings API call to
also return drive letters for GPT paritions. Previously this worked
only for MBR partitions. This is achieved by matching the GPT partition
GUID with the info stored in the blob from
HKLM\SYSTEM\MountedDevices\DosDevices keys. For GPT partions this blob
contains a "DMIO:ID:" prefix followed by a 16 byte binary GUID.