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toaster (version 0.4.1)

Big Data in-Database Analytics with Teradata Aster

Description

A consistent set of tools to perform in-database analytics on Teradata Aster Big Data Discovery Platform. toaster (a.k.a 'to Aster') embraces simple 2-step approach: compute in Aster - visualize and analyze in R. Its `compute` functions use combination of SQL and SQL/MR functions running in Aster database - highly scalable parallel and distributed analytical platform. Then `create` functions visualize results with boxplots, scatterplots, histograms, heatmaps, word clouds, maps, or slope graphs. Advanced options such as faceting, coloring, labeling, and others are supported with most functions.

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Install

install.packages('toaster')

Monthly Downloads

3

Version

0.4.1

License

GPL-2

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Repository

https://github.com/teradata-aster-field/toaster

Maintainer

Gregory Kanevsky

Last Published

December 23rd, 2015

Functions in toaster (0.4.1)

Compute Term Frequency - Inverse Document Frequency on a corpus.

computeCorrelations

Compute correlation between pairs of columns.

Create box plot.

computeClusterSample

Random sample of clustered data

computePercentiles

Compute percentiles of column values.

computeHistogram

Compute histogram distribution of the column.

Compute 2-dimensional multi-layered matrix for heat map visualizations.

createClusterPairsPlot

Create cluster variable plot.

getTemporalTypes

List Aster temporal data types.

Compute term frequencies on a corpus.

computeBarchart

Compute one or more aggregates across single class.

createPopPyramid

Create Population Pyramid type of histogram plot.

Create Heat Map type of plot.

getDiscretePaletteFactory

Generate discrete palette maker

computeAggregates

Compute aggregate values.

createCentroidPlot

Create plot of cluster centroids.

getMatchingColumns

Filter columns by pattern.

toaster: analytical and visualization toolbox for Teradata Aster

createSlopegraph

Create plot with Slope Graph visualization.

Counts nulls per column in the table.

Creates empty theme.

getCharacterColumns

Filter character columns.

getGradientPaletteFactory

Generate gradient palette maker

getTableSummary

Compute columnwise statistics on Aster table.

createHistogram

Create histogram type of plot.

Plot table level statistics, histograms, correlations and scatterplots in one go.

Fit Linear Model and return its coefficients.

createSilhouetteProfile

Create cluster silhouette profile plot.

createBubblechart

Create Bubble Chart type of plot.

getNumericTypes

List Aster numeric data types.

Give a deprecation error, warning, or messsage, depending on version number.

createClusterPlot

Create clusters' properties plot.

Locate map, geocode data, then plot both.

getNumericColumns

Filter numeric columns.

Randomly sample data from the table.

getCharacterTypes

List Aster character data types.

Test if table present in the database.

makeTempTableName

Make Aster temporary table name.

createWordcloud

Create Word Cloud Visualization.

viewTableSummary

Invoke a Data Viewer on table statistics.

computeSilhouette

Compute Silhouette (k-means clustering).

getTemporalColumns

Filter Date and Time Table Columns.

Perform k-means clustering on the table.

Tokenize (or split) text and emit n-word combinations from a document.

Tokenize (or split) text and emit multi-grams.