Reliable Adaption of Big Data with R


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Documentation for package ‘replyr’ version 0.9.0

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replyr-package replyr: Diligent Use of Big Data for R
%->% Land a value to variable from a pipeline.
%->_% Land a value to variable from a pipeline.
%land% Land a value to variable from a pipeline.
%land_% Land a value to variable from a pipeline.
addConstantColumn Add constant to a table.
bind_rowsQ Bind rows by a query. Assumes all tables structured identically.
buildJoinPlan Build a join plan
dplyr_src_to_db_handle get the db handle from a dplyr src
executeLeftJoinPlan Execute an ordered sequence of left joins.
expandColumn Expand a column of vectors into one row per value of each vector.
gapply grouped ordered apply
inspectDescrAndJoinPlan check that a join plan is consistent with table descriptions
keysAreUnique Check uniqueness of rows with respect to keys.
key_inspector_all_cols Return all columns as guess at preferred primary keys.
key_inspector_postgresql Return all primary key columns as guess at preferred primary keys for a PostgreSQL handle.
key_inspector_sqlite Return all primary key columns as guess at preferred primary keys for a SQLite handle.
makeJoinDiagramSpec Build a drawable specification of the join diagram
makeTempNameGenerator Produce a temp name generator with a given prefix.
renderJoinDiagram Render a diagram spec from 'makeJoinDiagramSpec' as a PNG graphics item.
replyr replyr: Diligent Use of Big Data for R
replyr_add_ids Add unique ids to rows. Note: re-arranges rows in many cases.
replyr_apply_f_mapped Apply a function to a re-mapped data frame.
replyr_arrange arrange by a single column
replyr_bind_rows Bind a list of items by rows (can't use dplyr::bind_rows or dplyr::combine on remote sources). Columns are intersected.
replyr_check_ranks confirm data has good ranked groups
replyr_coalesce Augment a data frame by adding additional rows.
replyr_colClasses Get column classes.
replyr_copy_from Bring remote data back as a local data frame tbl.
replyr_copy_to Copy data to remote service.
replyr_dim Compute dimensions of a data.frame (work around https://github.com/rstudio/sparklyr/issues/976 ).
replyr_drop_table_name Drop a table from a source
replyr_filter Filter a tbl on a column having values in a given set.
replyr_get_src Get the "remote data source" where a data.frame like object lives.
replyr_group_by group_by columns
replyr_hasrows Check if a table has rows.
replyr_has_table check for table
replyr_inTest Product a column noting if another columns values are in a given set.
replyr_is_local_data Test if data is local.
replyr_is_MySQL_data Test if data is MySQL.
replyr_is_Spark_data Test if data is Spark.
replyr_list_tables list tables
replyr_mapRestrictCols Map names of columns to known values and drop other columns.
replyr_ncol Compute number of columns of a data.frame (work around https://github.com/rstudio/sparklyr/issues/976 ).
replyr_nrow Compute number of rows of a tbl.
replyr_quantile Compute quantiles on remote column (NA's filtered out) using binary search.
replyr_quantilec Compute quantiles on remote column (NA's filtered out) using cumsum.
replyr_rename Rename a column
replyr_reverseMap Reverse a name assignment map (which are written NEWNAME=OLDNAME).
replyr_select select columns
replyr_split split a data item by values in a column.
replyr_summary Compute usable summary of columns of tbl.
replyr_testCols Run test on columns.
replyr_union_all Union two tables.
replyr_uniqueValues Compute number of unique values for each level in a column.
tableDescription Build a nice description of a table.
topoSortTables Topologically sort join plan so values are available before uses.