Package index • scidb

All functions

CONTAINS(): test if this pattern matches a substring

ENDS_WITH(): test if this pattern matches the end of the string

EQUALS(): equality binary predicate

GEQ(): greater-than-or-equal-to binary predicate

GT(): greater-than binary predicate

IN(): set membership binary predicate

IN_RANGE(): inclusive range test

IN_RANGE_EXCL(): exclusive range test

IN_RANGE_INCL(): inclusive range test

IS_NULL(): null test unary predicate

LEQ(): less-than-or-equal-to binary predicate

LIKE(): test if this pattern matches the entire string

LT(): less-than binary predicate

NEQ(): inequality binary predicate

NOT_IN(): set anti-membership binary predicate

NOT_NULL(): negation of IS_NULL

STARTS_WITH(): test if this pattern matches the start of the string

aflhelp(): Display SciDB AFL operator documentation

`&`(<scidb.expression>): binary conjunction operator for predicates

`&`(<scidb.predicate>): binary conjunction operator for predicates

as.R(): Download SciDB data to R

as.scidb(): Upload R data to SciDB

assign_expressions(): Parse multiple R expressions into a named list of expression objects bound to symbolic names (i.e. mutated variables)

assign_expressions_to_afl(): Parse multiple R expressions into a named list of AFL strings bound to symbolic names (i.e. mutated variables)

at_least(): Returns TRUE if version string x is greater than or equal to than version y

cov(<scidb>): Covariance matrix This function is more limited than R's default cov function. It can only compute a covariance matrix from a data matrix without any missing value handling by the procedure (in R notation) S0 <- sweep(x, 2, colMeans(x)), crossprod(S0)/(nrow(S0) - 1) # (covariance matrix result)

dimnames(<scidb>): Names of array dimensions

.attsplitter(): Internal function for processing SciDB attribute schema

.dimsplitter(): Internal function for processing SciDB dimension schema

.scidbeval(): An important internal convenience function that returns a scidb object. If eval=TRUE, a new SciDB array is created the returned scidb object refers to that. Otherwise, the returned scidb object represents a SciDB array promise.

expression_parser(): Create a scidb.expression by parsing an R expression

filter(): Parse multiple R expressions into a list of boolean expressions

filter_to_afl(): Parse multiple R expressions into a single AFL string

getpwd(): Simple utility to interactively enter a password without showing it on the screen

`%as%`(<scidb>): AFL arrary aliasing

`%as%`: AFL array aliasing

help(<operator>): AFL operator help

iquery(): Run a SciDB query, optionally returning the result.

ls(<afl>): List contents of a SciDB database

merge_filters(): Merge list of scidb.expression objects in conjunction

names(<scidb>): SciDB dimension and attribute names

`!`(<scidb.expression>): unary negation operator for a predicate

`!`(<scidb.predicate>): unary negation operator for a predicate

operators: Base SciDB operators

`|`(<scidb.expression>): binary disjunction operator for predicates

`|`(<scidb.predicate>): binary disjunction operator for predicates

print(<afl>): Print a summary of a afl SciDB database connection object

print(<scidb>): Print a summary of a scidb object

print(<afl>): Print a summary of a afl SciDB database connection object

schema(): SciDB array schema

scidb-package: SciDB/R Interface

scidb(): Create an R reference to a SciDB array or expression.

scidb.expression: Virtual base expression class

scidb.expression.binary: Binary expression class

scidb.expression.nary: N-ary expression class

scidb.expression.nullary: Nullary operation expression class

scidb.expression.symbol: Leaf symbol expression class

scidb.expression.unary: Unary operation expression class

scidb.expression.value: Leaf value expression class

scidb.predicate: Anonymous predicate class

scidb_predicate_expressions: scidb predicate expressions

scidb_prefix(): Register an AFL prefix expression

scidbconnect(): Connect to a SciDB database

show(<afl>): Print a summary of a afl object

show(<scidb>): Print a summary of a scidb object

store(): Evaluate an expression to scidb or scidb objects