R-value (soils)Wikipedia

The R-Value test measures the response of a compacted sample of soil or aggregate to a vertically applied pressure under specific conditions. This test is used

aggregate function | R Documentation

Raster* objects: Aggregate a Raster* object to create a new RasterLayer or RasterBrick with a lower resolution (larger cells). Aggregation groups rectangular

Transforming subsets of data in R with by, ddply and…

Transforming data sets with R is usually the starting point of my data analysis work. Here is a scenario which comes up from time to time:

Using REXCEL to Reshape or Aggregate Data

As previously introduced, R is a powerful data management and analyticsand install, or using the Aggregate Data function in RExcel (point and click).

The aggregate() Function in RYouTube

Data summary with R using apply, by, tapply, aggregatePDuration::. Steve Pittard,views ·:· Computing with R : The

An Introduction to reshapeSean C. Anderson

reshapeis an R package written by Hadley Wickham that makes it easy to . per cell, you also need to tell dcast how to aggregate the data.

R 에서 SQL 사용 sqldf 패키지, 집계 aggregate() 함수by…

년월일R에는 aggregate() 라는 함수가 있습니다만, 기존에 SQL에 익숙한 분석가라면 R 에서 SQL 문을 사용할 수 있게 해주는 sqldf package를 사용하면

R: Compute Summary Statistics of Data Subsets

aggregate {stats}, R DocumentationDefault Smethod: aggregate(x, ) ## Smethod for class &#;data.frame&#; aggregate(x, by, FUN, , simplify = TRUE, drop

Quick-R: Aggregate

Aggregating Data. It is relatively easy to collapse data in R using one or more BY variables and a defined function. # aggregate data frame mtcars by cyl and vs,

Aggregate dataDaniel Wollschlaeger

R Examples RepositoryAggregate data frames. Simulate data; Apply . aggregate(cbind(age, IQ, rating) ~ + group, FUN=mean, data=myDf1) group

Tutorial on the R Apply Family (Article)…

So, aggregate() tells R that you wish to sum over all theNote that R assigned the sum to a variable &#;x&#;,

GitHubhadley/reshape: An R package to flexible…

An R package to flexible rearrange, reshape and aggregate data.

Summarizing dataCookbook for R

The aggregate function is more difficult to use, but it is included in the base R installation and does not require the

eco: R Package for Ecological Inference inxTables…

eco is a publicly available R package that implements the Bayesian andKeywords: aggregate data, Bayesian inference, bounds, likelihood inference, missing

rAggregate a dataframe on a given column and…

First, you split the data using split : split(z,z$Group). Than, for each chunk, select theI have a dataframe in R of the following form:

Technical Change and the Aggregate Production Function…

Technical Change and the Aggregate Production Function. Author(s): .r-. I. |I. I. Ik. Q,. I~~~~~k k.Professors Wassily Leontief and William Fellner inde-.

Package &#;raster&#;R Project

URL http://cran.r-project.org/package=raster. ByteCompileMaintainer Robert J. Hijmans <[email protected]>. Repositoryaggregate .

Aggregate() | R-statistics blog

In a recent post we learned how to use the {reshape} package (by Hadley Wickham) in order to aggregate and reshape data (in R) using the

SparkR (R on Spark)Spark.1.DocumentationApache…

SparkR is an R package that provides a light-weight frontend to use Apache . data frames support a number of commonly used functions to aggregate data

Computing with R : The Aggregate Function…

www.Stats-Lab.com | The aggregate function.Computing with R : The Aggregate Function. Dragonfly Statistics. Loading Unsubscribe from

Comparison with R / R libraries — pandas..2…

For transfer of DataFrame objects from pandas to R, one option is to use HDFfiles, see . The groupby() method is similar to base R aggregate function.

8. Raster data manipulation — R Spatial

Here is an example of creating and changing a RasterLayer object &#;r&#; from scratch. .. r <raster() r[] <:ncell(r) ra <aggregate(r,) rd <disaggregate(ra,).

THE DISTRIBUTION WITH SIZE OF AGGREGATE…

Average-size distributions for aggregate snowflakes are well represented abovestandard rain and melted-snow distributions of the same R requires that there

Using aggregate and apply in RMusings from an…

A short post on using the aggregate and apply functions in R based on material from a data analysis and visualisation course.

Aggregate – A Powerful Tool for Data Frame in R |…

This post gives a short review of the aggregate function as used for data.frames and presents some interesting uses: from the trivial but handy

Aggregating and analyzing data with dplyrData…

Describe what the dplyr package in R is used for. Apply common dplyr functions to manipulate data in R. Employ the &#;pipe&#; operator to link together a sequence

Schedule R (Formsand Form)Internal Revenue…

The Schedule R (Form) allocates those aggregate wages reported on Formto each of the clients. Sectionagents who elect to file

How dplyr replaced my most common R idioms |…

Base R makes it very easy to do one of these aggregations, but to get two values, it requires that we make two calls to aggregate and then

CELL AGGREGATION AND SPHERE PACKING

r, radius of a sphere. l, w, h, length, width, height of a cube. R, ratio of aggregate volume to individual cell volume. Vagg, volume of cell aggregate. Vcell, volume

Aggregation and Restructuring data (from “R in Action”) |…

R provides a number of powerful methods for aggregating and reshaping data. When you aggregate data, you replace groups of observations