sparse >> Sparse matrix support
Generate sparse matrix
 speye 
 sprand 
 sprandn 
 sprandsym 
 spdiags 
 spconvert 
 spvcat sphcat
Manipulate sparse matrices
 sparse issparse 
 full
 is_sparse is_real_sparse is_complex_sparse
 spimag spreal
 spy 
 nnz 
 spfind spdump
 nonzeros 
 nzmax 
 spones 
 spfun 
 spalloc 
 spkron
 matrix_type
Graph Theory
 etree
 etreeplot
 gplot
 treelayout
 treeplot
Sparse matrix reordering
 ccolamd
 colamd
 colperm
 csymamd
 dmperm
 randperm
 symamd
 symrcm
Linear algebra
 condest
 eigs
 normest
 spchol
 spchol2inv
 spcholinv
 spdet
 spinv 
 splchol
 splu
 sprank
 svds= create an interface to <a href="http://www.caam.rice.edu/software/ARPACK/">ARPACK</a> and add it to octave-forge
Iterative techniques
 bicg
 bicgstab
 cgs
 cholinc
 gmres
 lsqr
 luinc
 minres
 pcg
 pcr
 qmr
 symmlq
Miscellaneous
 spaugment
 spparms 
 symbfact
 spstats
 spprod
 spcumprod
 spcumsum
 spsum
 spsumsq
 spmin
 spmax
 spatan2
 spdiag
Test
 fem_test sp_test
