na Questions
3
Solved
EDIT: The accepted answer has helped the scales fall from my eyes; this change is an improvement and not annoying after all.
In the help file for table, it is now written:
Non-factor arguments ...
5
I have data as follows:
avec <- c("somevar", NA ,"anothervar", NA, "thisvar","thatvar", NA, "lastvar", NA )
All I want to do is to replace all ...
2
Solved
I'm trying to extract the second subelement of every element in a list while ignoring NAs in R. Here's a small example:
mylist <- list(a=c(6,7),b=NA,c=c(8,9))
sapply(mylist, "[[", 1)
sapply(myl...
5
Solved
Data
I'm working with a data set resembling the data.frame generated below:
set.seed(1)
dta <- data.frame(observation = 1:20,
valueA = runif(n = 20),
valueB = runif(n = 20),
valueC = runif(...
5
Solved
I'm trying to prepare heatmap for my data but I have no idea why this error appears.
My data:
> dput(head(tbl_ready))
structure(c(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.370330677123077,
0, ...
3
Solved
I have a data.table like this:
DT <- data.table(id = c(rep("a", 3), rep("b", 3)),
col1 = c(NA,1,2,NA,3,NA), col2 = c(NA,NA,5,NA,NA,NA))
id col1 col2
1: a NA NA
2: a 1 NA
3:...
Macroscopic asked 17/5, 2017 at 13:4
3
Solved
Could someone please explain why I get different answers using the aggregate function to count missing values by group? Also, is there a better way to count missing values by group using a native R...
9
Solved
I have a data.frame containing some columns with all NA values. How can I delete them from the data.frame?
Can I use the function,
na.omit(...)
specifying some additional arguments?
10
Solved
I want to know how to omit NA values in a data frame, but only in some columns I am interested in.
For example,
DF <- data.frame(x = c(1, 2, 3), y = c(0, 10, NA), z=c(NA, 33, 22))
but I only...
8
Solved
I have a huge vector which has a couple of NA values, and I'm trying to find the max value in that vector (the vector is all numbers), but I can't do this because of the NA values.
How can I remov...
8
Solved
I have a dataframe where some of the values are NA. I would like to remove these columns.
My data.frame looks like this
v1 v2
1 1 NA
2 1 1
3 2 2
4 1 1
5 2 2
6 1 NA
I tried to estimate th...
2
Solved
How to remove NA from this time series?
x <- structure(c(NA, 15.3471263711111, 23.7495828967391, 17.6522039782609,
13.950342245, 18.6679701043956, 21.7398276684783, 22.4975495326087,
1...
Orvilleorwell asked 3/8, 2022 at 17:44
4
Solved
I have huge matrix with a lot of missing values. I want to get the correlation between variables.
1. Is the solution
cor(na.omit(matrix))
better than below?
cor(matrix, use = "pairwise.comple...
Tremble asked 16/9, 2011 at 13:44
3
Solved
I need to fill in NA rows with the previous row value, but only until a criteria is not changed.
As a simple example for days of week, meals and prices:
Day = c("Mon", "Tues", "Wed", "Thus", "Fri"...
4
Solved
I have 2 data frames with the same column names, but different numbers of rows. The first data frame (a) looks similar to this:
a = data.frame("Site"=c(1,2,3,4,7,9,10,11,13,14),
"v...
4
Solved
Can I define a "fill" value for NA in dplyr join? For example in the join define that all NA values should be 1?
require(dplyr)
lookup <- data.frame(cbind(c("USD","MYR"),c(0.9,1.1)))
names(look...
2
Solved
I am trying to count the non-NA values in a spatRaster using the global() function from the terra package. All the functions (mean, max, sd, etc.) seem to work except for "isNA" and "...
5
Solved
I need help to decompose my monthly data which have seasonality, but it does not work because NA values are not removed. There may be another problem. Please look at my data and errors as below.
t...
Coxalgia asked 11/7, 2014 at 9:33
12
Solved
There are a lot of posts about replacing NA values. I am aware that one could replace NAs in the following table/frame with the following:
x[is.na(x)]<-0
But, what if I want to restrict it to...
Valentinavalentine asked 15/10, 2013 at 10:36
2
Solved
My first approach was to use na.strings="" when I read the data in from a csv. This doesn't work for some reason. I also tried:
df[df==''] <- NA
Which gave me an error: Can't use matrix or ar...
5
Solved
I am working with Landsat imagery to calculate net radiation.
There are very low negative values (ex: -0.000003) that are in my converted reflectance raster layers. I want to make sure that my ref...
2
Solved
When I use .Internal(inspect()) to NA_real_ and NaN, it returns,
> .Internal(inspect(NA_real_))
@0x000001e79724d0e0 14 REALSXP g0c1 [REF(2)] (len=1, tl=0) nan
> .Internal(inspect(NaN))
@0x000...
5
Solved
I have such a data frame:
df <- structure(list(a = c(NA, NA, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L), b = c(NA, NA, NA, 1L, 2L, 3L, 4L, 5L, 6L, 7L), d = c(NA, NA, NA, NA, 1L, 2L, 3L, 4L, 5L, 6L)), .Name...
4
Solved
When concatenating strings using dplyr, group_by() and mutate() or summarize () with paste() and collapse, NA values are coerced to a string "NA".
When using str_c() instead of paste(), s...
Forwarding asked 23/9, 2021 at 15:38
2
Solved
I have a data frame with the columns city, state, and country. I want to create a string that concatenates: "City, State, Country". However, one of my cities doesn't have a State (has a NA instead)...
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