CRAN . R-PROJECT . ORG {}

Matching Content Categories {📚}

• Graphic Design
• Shopping
• Social Networks

Content Management System {📝}

What CMS is cran.r-project.org built with?

Website use litedown 0.7.

Traffic Estimate {📈}

What is the average monthly size of cran.r-project.org audience?

💥 Very Strong Traffic: 200k - 500k visitors per month


Based on our best estimate, this website will receive around 250,019 visitors per month in the current month.
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How Does Cran.r-project.org Make Money? {💸}

We see no obvious way the site makes money.

Not every website is profit-driven; some are created to spread information or serve as an online presence. Websites can be made for many reasons. This could be one of them. Cran.r-project.org could be getting rich in stealth mode, or the way it's monetizing isn't detectable.

Keywords {🔍}

int, columns, datatable, jfk, origin, ans, flights, month, rows, char, depdelay, list, arrdelay, ewr, order, dest, column, lax, group, subset, data, lga, returns, select, dataframe, row, grouping, compute, number, carrier, names, variables, num, variable, vignette, function, headans, indices, vector, expressions, result, automatically, mia, syntax, base, day, distance, pbi, character, return,

Topics {✒️}

short distance flights makeup ~ distance unique carrier code nyc-flights14 data obtained month = df$month[1] na add/update/delete columns origin airports occur datatable-keys-fast-subset month equals 6l table/master/vignettes/flights14 flights[carrier == carrier “aa” carrier code arr_delay + dep_delay expression carrier == origin airport equals york city airports behavior differs based enabling binary search day blazing fast subsets year global option datatable dep_delay columns grouped operating system commands convert existing objects month equals 6 load flights directly carrier potentially huge set v2 start internalising usage datatable-reference-semantics internal query optimisation consistent syntax irrespective https urls directly delay_dep = dep_delay grouping columns origin special symbol called larger tables print flights started late standard data structure list enables converting performing analysis fluidly dest pair flights$month = flights$month fread accepts http attribute called sorted

Questions {❓}

• ## Do long distance flights cover up departure delay more than short distance flights?
• ## Does cover up vary by month?
• 0 (for reference, check ?
• For more details pertaining to the difference (goes beyond the scope of this vignette), please see ?
• How can we do this efficiently and concisely?
• Now what if we would like to order the result by those grouping columns origin, dest and month?
• What if you had 100 columns to average mean()?
• What’s happening here?
• Frame)?
• G) Why keep j so flexible?
• Table enhanced?
• Table?
• – Can by accept expressions as well or does it just take columns?
• – Do we have to compute mean() for each column individually?
• – How can we calculate the number of trips for each origin airport for carrier code "AA"?
• – How can we concatenate columns a and b for each group in ID?
• – How can we get the average arrival and departure delay for each orig,dest pair for each month for carrier code "AA"?
• – How can we get the number of trips corresponding to each origin airport?
• – How can we get the total number of trips for each origin, dest pair for carrier code "AA"?
• – How can we order ans using the columns origin in ascending order, and dest in descending order?
• – How can we return the first two rows for each month?
• – How can we specify just the columns we would like to compute the mean() on?
• – How many trips have been made in 2014 from “JFK” airport in the month of June?
• – How many trips have had total delay < 0?
• – So how can we directly order by all the grouping variables?
• – What happens when querying for non-existing elements?
• – What if we would like to have all the values of column a and b concatenated, but returned as a list column?

External Links {🔗}(5)

• How much income does https://rdatatable.gitlab.io/data.table/articles/fr/datatable-intro.html have?
• How much does https://rdatatable.gitlab.io/data.table/articles/ru/datatable-intro.html make?
• Explore the financials of https://raw.githubusercontent.com/Rdatatable/data.table/master/vignettes/flights14.csv
• Profit of https://github.com/arunsrinivasan/flights
• See how much https://github.com/tidyverse/nycflights13 makes per month

Libraries {📚}

• Moment.js
• Prism.js

CDN Services {📦}

• Jsdelivr