Questions tagged [r-rownames]
The `rownames()` method in R is used to rename and replace the row names of a matrix-like object (incl. data frames) .
r-rownames
117
questions
2
votes
5
answers
65
views
How to access row and column names (year and month) from a (monthly) time series, when rownames and colnames fail?
In monthly time series (frequency = 12), R prints out the years and months automatically, arranging them to look like row names and column names. But they are not accessible through rownames or ...
- 80
0
votes
1
answer
38
views
Name matrix rows with a loop Stata
I have a matrix with dimensions of 4x2. I would like to name the rows with a loop.
For example. From something like this:
c1 c2
r1 0 0
r2 0 0
r3 0 0
r4 0 0
I would like this:
...
- 133
1
vote
2
answers
47
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Ordering rows and columns of R Matrix
I have a matrix in R like this:
bio1 bio10 bio11 bio12 bio13 bio14 bio15 bio16 bio17 bio18 bio19 bio2 bio3 bio4 bio5 bio6 bio7 bio8 bio9
bio1 1.00 0.90 0.91 -0.40 -0.21 -0.54 0.71 -0.22 -...
0
votes
1
answer
145
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Change row names in kable (RMarkdown)
I have produced the following table with kable package, in RMarkdown.
Here's the dataframe:
structure(list(...1 = c("Catalunya", "PIB", "Demanda interna1",
"Demanda ...
- 309
2
votes
3
answers
126
views
How do I change the row names of multiple data frames in a list in R at once?
I have the following example list of data.frames:
df <- data.frame(A = 1:10, B = 1:10)
list1 <- list(df[1:3,],df[4:6,],df[7:10,])
[[1]]
A B
1 1 1
2 2 2
3 3 3
[[2]]
A B
4 4 4
5 5 5
6 6 6
[[...
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0
votes
1
answer
215
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Error of "incorrect number of dimensions" occurred when using lapply to a list of dataframes
I was dealing with a list of two dataframes. Both look this way.
What I would like to do was to change the row names and column names so that they may look this way.
Here is the code I used.
# ...
0
votes
0
answers
51
views
R memory consumption when accessing object slot with row names
I have encountered a very strange memory behavior in R when accessing slots from a custom S4-class where I have applied row names to the object.
Imagine I have the S4 class below with two identical ...
- 289
0
votes
2
answers
119
views
How to set row names for inner levels in a nested list?
In the nested list below, I need to set row names to resource and the row names should be taken from bodyPart. I want this to be applied to all objects (e.g., obj1, obj2)
obj1 <- list(resource = ...
- 193
1
vote
2
answers
183
views
Saving CSV files as tab delimited files while keeping the row names
I have a folder that is full of CSV files. Each file has genes as row names and samples as columns. I need them as TSV, so I saved each one of them as TSV and into a new path. This is the code:
...
- 1,322
0
votes
1
answer
40
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how to filter dataframe based on rownames using strsplit
I have a dataframe:
dput(gene_exp[1:5,1:5])
structure(list(en_Adipose_Subcutaneous.db = c(0.0531016390078734,
-0.00413407782001034, -0.035434632568444, 0.00968736935965742,
0.0523714252287003), ...
- 65
0
votes
0
answers
36
views
R, create row and give it a name whist assigning data
I would like to know if it is possible with R, to create in one go a row, name it and assign it values.
for example, I have.
This df is named domain
and I Have This df is named tactics
and I would ...
0
votes
0
answers
32
views
Is there a way to order the rows of a data frame droping in the same function the rownames?
When I order a data frame by the values of a column using the function "order", I get the rows reordered but they preserve rownames, which they are numbers if I am not using rownames in my ...
- 21
3
votes
3
answers
681
views
Get row names based on column values, R, multiple conditions
Using the sample data set mtcars
head(mtcars)
mpg cyl disp hp drat wt qsec vs am gear carb
Mazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4
Mazda RX4 Wag ...
- 119
0
votes
1
answer
239
views
Error of "non-unique values when setting 'row.names'", after setting explicit unique row names
here is a weird one:
I am working on the following data frame:
str(ccomb)
'data.frame': 358 obs. of 36 variables:
$ Country.Name : chr "Albania&...
- 15
2
votes
2
answers
196
views
gather() remove the row names of my dataframe. how can I have this row names?
when I use tidyr's gather() function and manipulate my dataframe, I lose row names of prev. data frame.
this is output of my rstudio console
> DF <- as.data.frame((freethrows/Games), row.names = ...
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