cbind Questions
3
Solved
Suppose I have two dataframes:
import pandas as pd
test1 = pd.DataFrame([1,2,3,4,5])
test2 = pd.DataFrame([4,2,1,3,7])
I tried test1.append(test2) but it is the equivalent of R's rbind.
How can ...
Volteface asked 18/2, 2015 at 23:7
4
Solved
I have two identical data frames. Same column and row headings. One has correlations in it and one has p-values. I want to merge these two tables in an interleaved manner, so that the first column ...
10
Solved
I think I'm looking for an analog of rbind.fill (in Hadley's plyr package) for cbind. I looked, but there is no cbind.fill.
What I want to do is the following:
#set these just for this example
on...
2
Here's the behavior I want:
import numpy as np
x = np.array([[1,2],[3,4]])
y = np.array([5, 6])
cbind(x,y) # desired result: np.array([[1,2,5],[3,4,6]])
Seems like it should be easy, but the opt...
4
Solved
I am trying to display multiple dataframes next to each other to compare certain entries. However, they have a different number of rows and I want each data frame to be in the exact same order.
I t...
4
Solved
#use readtable to create data frames of following unzipped files below
x.train <- read.table("UCI HAR Dataset/train/X_train.txt")
subject.train <- read.table("UCI HAR Dataset/t...
3
Solved
I have two lists named h and g.
They each contain 244 dataframes and they look like the following:
h[[1]]
year avg hr sal
1 2010 0.300 31 2000
2 2011 0.290 30 4000
3 2012 0.275 14 600
4 2013 0.28...
2
Solved
I'm trying to build a data frame consisting of three character variables and one numeric variable. When I run the following code, I get a four-column matrix, but the score variable is no longer num...
3
Background
The dispatch mechanism of the R functions rbind() and cbind() is non-standard. I explored some possibilities of writing rbind.myclass() or cbind.myclass() functions when one of the argu...
4
Solved
I have two datasets both of the same size [132,450000]. One with values and another with p-values corresponding to those values. Now I want to combine those two datasets so that I have 1 large data...
1
Solved
I have two named vectors similar to these ones:
x <- c(1:5)
names(x) <- c("a","b","c","d","e")
t <- c(6:10)
names(t) <- c("e","d","c","b","a")
I would like to combine them so to get...
5
Solved
I want to calculate an equation in R. I don't want to use the function sum because it's returning 1 value. I want the full vector of values.
x = 1:10
y = c(21:29,NA)
x+y
[1] 22 24 26 28 30 32 34...
1
Solved
I have two data frames with different number of columns and rows. I want to combine them into one data frame.
> month.saf
Name NCDC Year Month Day HrMn Temp Q
244 AP 99999 2014 2 1 0 12 1
245 ...
2
Solved
1
Solved
I have a question regarding the characteristics of cbind in a data table and a data frame.
If I am binding a data frame(df) and a data table(dt), then the class of the resultant object depends on t...
Limulus asked 1/12, 2015 at 7:10
1
Solved
Not sure why this is happening. I have a dataframe df2 with the variables below:
EVTYPE TOTAL_FATALITIES TOTAL_INJURIES
(fctr) (dbl) (dbl)
1 TORNADO 5633 91346
2 EXCESSIVE HEAT 1903 6525
3 FLASH...
1
Solved
cbind in R is relatively time consuming in repeated calls, but it also is powerful for various data types.
I have written code that is 3X faster than cbind when binding two matrices. But bind_cols ...
1
Solved
I would like to slice every n elements of list, cbind the slice, and then rbind the slices.
I can do this with the code below (n = 10 elements, list is 30 elements long). I 'manually' select ever...
2
Solved
I have a for loop that gives me a column of data per run. I run the for loop in the range 0:4, so it gives me 5 columns. If I print it out, it is like column1, column2, ... I want to save all of th...
1
Solved
Let's say I have an unspecified number of vectors of different lengths, and I want to effectively rbind them together, with the caveat that they must each occupy a different column in the resulting...
2
Solved
I have two lists of data.frames. Both lists have the same length and contain fitting data.frames in their according list elements.
So the scenario looks like this
dfa = data.frame(a=1:3, b =...
2
Solved
x = iris$Sepal.Width;
y = iris$Species;
m = cbind(x,y);
the output of m is:
x y
[1,] 3.5 1
[2,] 3.0 1
[3,] 3.2 1
[4,] 3.1 1
[5,] 3.6 1
[6,] 3.9 1
but I want 'setosa', etc in column y i...
1
Solved
I have below line of code for cbind, but I am getting a warning message everytime.
Though the code still functions as it should be, is there any way to resolve the warning?
dateset = subset(all_da...
2
Solved
Please forgive me if I missed an answer to such a simple question.
I want to use cbind() to bind two columns. One of them is a single entry shorter in length.
Can I have R supply an NA for the mi...
3
Solved
Given three (or n lists):
one <- list(a=1:2,b="one")
two <- list(a=2:3,b="two")
three <- list(a=3:4,b="three")
What would be a more efficient way of cbindind each list item across the n...
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