How to make a list from DataFrame?


Dandor
26/4/2016 6:52 am
HOME ยป Web Development

I have a DataFrame (coordinates):

    X   Y   Z
0  11  44  77
1  22  55  88
2  33  66  99

I need to get Y and Z columns values to a list. If I do something like:

centers = [df['Y'], df['Z']]

or

Y = [df['Y']]

I got a list with index columns like:

print Y

    0  44
    1  55
    2  66

How to create a list without indexes values (0,1,2)?


Related to : How to make a list from DataFrame?
How to make a list from DataFrame?
26/4/2016 6:52 am by Dandor in Web Development

I have a DataFrame (coordinates):

    X   Y   Z
0  11  44  77
1  22  55  88
2  33  66  99

I need to get Y and Z columns values to a list. If I do something like:

centers = [df['Y'], df['Z']]

or

Y = [df['Y']]

TAGS:
 make 
 list 
 from 
 DataFrame 
  
  
casting converts a dataframe to a list in r (reshape package) - would like to keep as dataframe
by Jorgemr in Web Development

I must be missing something trivial but I can't see why the below cast converts my dataframe to a list. I would like the output to be a dataframe if possible.


It starts as


str(d)
'data.frame': 12 obs. of 4 variables:
$ credit_id: num 12 12 12 12
Assign list name to dataframe list element
19/1/2015 7:10 am by Jeffrey Shackelford in Web Development

I have a list of lists of dataframes:

a <- list(first = data.frame(x = runif(1), y =
runif(1)), second = data.frame(x = runif(5), y = runif(5)))
b <- list(first = data.frame(x = runif(1), y = runif(1)), second =
data.frame(x = runif(5), y = runif(5)))
a <- a %>% set_na
Using R's lm on a dataframe with a list of predictors
by Soapy Bones in Web Development

I have a dataframe with let's say N+2 columns. The first is just dates (mainly used for plotting later on), the second is a variable whose response to the remaining N columns I would like to compute. I'm thinking there must be something like


df = data.frame(y = 1:10, x1 = runif(1
converting dataframe into a list
by Govind Bhavan in Web Development

I have a Python dataFrame with multiple columns.


2u 2s 4r 4n 4m 7h 7v
0 1 1 0 0 0 1
0 1 0 1 0 0 1
1 0 0 1 0 1 0
1 0 0 0 1 1 0
1 0 1
Dictionary where list is value as dataframe
by Xander in Web Development

This may be an incorrect way to use dataframes, but I have a dictionary where the values are a list of items. Such as:


my_dict = {'a':[1,2,3], 'b':[3,4,5]}

I want to create a data frame where the indices are the keys and there is one column, where the value is


Subset dataframe with list of columns in R
by Pseudoics in Web Development

I want to select all columns in my dataframe which I have stored in a string variable. For example:


v1 <- rnorm(100)
v2 <- rnorm(100)
v3 <- rnorm(100)
df <- data.frame(v1,v2,v3)

I want to accomplish the following:


df[,
Pandas dataframe to list of tuples
7/12/2014 1:10 am by Dmitry in Web Development

I parsed a .xlsx file to a pandas dataframe and desire converting to a list of tuples. The pandas dataframe has two columns.

The list of tuples requires the product_id grouped with the transaction_id. I saw a TAGS: Pandas dataframe list tuples

Add a Column to a Dataframe From a List of Values
by Rob Archer in Web Development

Starting with an empty dataframe, I need to fill the dataframe as follows: A for loop generates a fixed number of values in each iteration, and I need to add a new column with the values in that list, and giving the column a unique name, col_i (where i is the ith iteration of the loop).


TAGS: Column Dataframe From List Values
python list to dataframe object
15/11/2014 7:10 am by clubbedseal in Web Development

When I try to convert the list to pandas dataframe, I get the entire line as a single cell.

pdlist=['From: 2012-11-07 19:16:07, To: 2012-11-07
19:21:07, Downtime: 0h 05m 00s',
 'From: 2012-11-13 06:16:07, To: 2012-11-13 06:21:07, Downtime: 0h 05m
00s',
 'From: 201=4-10-19 18:10:57
HD Wallpapers
3D
3D Abstract
City
Celebrities
Indian Celebrities
Cars
Travel
Girls
Animals Birds
Movies
Sports
Black White
Nature
Planes
Anime
Food Drink
Dreamy Fantasy
Architecture
Games
Space
Holidays
Flowers
Love
Artistic
Baby
Beach
Bikes Motorcycles
Macro
Computers
Vector
Funny
Army
Textures
Brands
Misc
Music
Other
Privacy Policy - Copyrights Notice - Feedback - Report Violation - RSS 2017 © bighow.org All Rights Reserved .