Questions tagged [group]
585 questions
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Is there a faster Python algorithm to iterate through grouped Cartesian product pairs?
I have two files (lhs and rhs), each with a grouping-variable field (other variables exist too).
The goal is to iterate through the Cartesian product pairs within each grouping-variable value as quickly as possible. There may be grouping-variable…

Matt B
- 11
- 2
1
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1 answer
Add to set based on a prop
In the group stage I want to create a new array of colors, the colors are objects of two fields (name, value), the resulted array must contain colors with unique color names.
{
$group: {
_id: null,
sizes: { $addToSet:…

Omar Bahutair
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- 3
1
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1 answer
If I have a function that randomly creates shapes, how can I add those shapes to a group? (CMU CS Academy)
I'm working in CMU CS Academy's Sandbox and I currently have a function that will draw a rectangle of random size, color, and position:
# List of colors
app.colors = ['crimson', 'gold', 'dodgerBlue', 'mediumPurple']
# Creating random shapes
import…

J___389
- 13
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1
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2 answers
R Loop over Arima Model Error in `[<-.ts`(`*tmp*`, ri, only replacement of elements is allowed
Data Frame example:
Country= c('Angola', 'Angola', 'Angola', 'Angola', 'Angola', 'Angola', 'Algeria', 'Algeria', 'Algeria', 'Algeria', 'Algeria', 'Algeria')
Year= c( 2000, 2000, 2001, 2001, 2002,2002, 2000, 2000, 2001, 2001, 2002,2002)
Species= c(…

Pilar Rius
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1
vote
2 answers
Create category by group using a loop
In R, I want to create a "category" variable that depends on differences between the date of birth and the initial date of individuals born within a group (min) (which is in another dataframe), so that an individual will be in a category 1 if was…

ana_gg
- 370
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1
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1 answer
Cannot group boxplots or add manual legend using ggpattern and 2 datasets
I am quite new to R in general and currently struggling with a specific plot I want to create.
Preferably I would like to group my boxplots (2 per Area -> Good Habitat, average habitat etc.) and add a legend. Since I am using two datasets from two…

beginEcologist
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1
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4 answers
How To Count Values Inside Deeply Nested Array Of Objects in Mongodb Aggregation
I want to sum of values inside array of objects which have another array of objects.
In my case; how can I count 'url' values in all documents inside 'urls' array under 'iocs' array;
Mongo playground: open
Here is document example;
[
{
"_id":…

Mbay
- 75
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1
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0 answers
Why can't I find AD security group using the AD User and Computers tool?
I created a security group in AD. Using the AD Users and Computers tool, I can see it when I browse for it at the OU path, but I cannot see it using the "Find" function. Why is that?
Result when I browse for the group.
Result when I do a "Find" for…

simran arora
- 11
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1
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1 answer
R ggplot grouped legend of different origin
Im looking for a solution to have grouped legends.
Right now it seems that the first fill argument takes over the labeling of the legend.
Looking for: Solution to show both data sets separated inside the legend.
Problem:
Mixed up legend and data…

404rorre
- 89
- 7
1
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2 answers
How to do a boxplot in R with a missing grouping level and two factors
8 years and eight months ago, the first part of my question was answered perfectly for a boxplot with a missing grouping level by Stephan Kolassa when one level (12) was missing:
How to do a boxplot in R with a missing grouping level
data <-…

Frans van der Slik
- 11
- 3
1
vote
3 answers
Grouping List and counting
I have OrderItems class
public class OrderItems {
public int id;
public double portion;
and List like below:
List orderItems = new ArrayList<>();
orderItems.add(new OrderItems(1,0.5));
…

Davron Bafoyev
- 21
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1
vote
1 answer
Group by timestamp and get mean Dataframe
I generate for each week as csv file. The weeks are then merged into one. The merged CSV with the Dataframe looks like this:
machineId | id | mean | min | max
machine1 | 2 | 00:00:03.47 |…

hubi3012
- 75
- 7
1
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1 answer
Select last registered row from each group from two tables in MySQL v5.6
Could you please help me with a query I'm having issues with? I tried to seach for similar questions here with no success.
I have 2 tables which I need to join and get the latest created_date from each val1, val2 unique combination.
See here for the…

JohnP
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1
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1 answer
dplyr :conditional pipeline while grouping
I have a data frame of hourly weather data. I want to group the hours into days and assign values to the new daily data frame when a condition is met and only the mean of the rows that meet that condition: In the daily data frame I don't want to use…

pantelis kleanth
- 11
- 3
1
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0 answers
How to add total for each groups in Multi Level Groups in Tabulator.js table
I have created a tabulator table with Multi Level Groups
var table = new Tabulator("#example-table", {
groupClosedShowCalcs:true, //show column calculations when a group is closed
columnCalcs:"both", //true, both, table,…

yannls
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