scidb (version 1.1-0)

dimnames.scidb: dimnames

Description

Return a list of dimension names. Warning! Huge SciDB arrays may return enormous lists.

Usage

## S3 method for class 'scidb':
dimnames(x)

Arguments

x

SciDB array reference object.

Value

• A list of dimension names.

Details

Don't use this function for huge SciDB arrays. Instead, iterate through SciDB dimension values using iquery as shown in the examples.

See Also

iquery

Examples

# Build a two-dimensional array called 'yikes' with a non-integer dimension
scidbremove(c("cazart","yikes"),error=warning)
iquery("store(apply(build_sparse(<val:double>[i=0:9,5,1,j=0:20,2,0],random()/1000000000,i<j or j=20),a,format(i,'aiquery("create array yikes<val:double>[a(string)=*,5,1,j=0:20,2,0]")
iquery("redimension_store(cazart,yikes)")

yikes <- scidb("yikes")

dimnames(yikes)

# Here is an alternate approach that iterates through dimension names
# along one dimension for huge arrays:
i <- iquery("yikes:a", return=TRUE, iterative=TRUE)
nextElem(i)