#### 4.23.1.3 fanViaCones

`Syntax:`
  `fanViaCones(` list Cones `)`
  `fanViaCones(` cone c_1,...,cone c_n `)`
`Type:`
  fan
`Purpose:`
  fan generated by the cones supplied, either via a list or via single arguments
`Example:`

      LIB"gfanlib.so";
      intmat M[2][2]=1,0,0,1;
      cone c=coneViaPoints(M);
      intmat N[2][2]=1,0,0,-1;
      cone d=coneViaPoints(N);
      fan f=fanViaCones(c,d);
      f;
      ==> _application PolyhedralFan
      ==> _version 2.2
      ==> _type PolyhedralFan
      ==>
      ==> AMBIENT_DIM
      ==> 2
      ==>
      ==> DIM
      ==> 2
      ==>
      ==> LINEALITY_DIM
      ==> 0
      ==>
      ==> RAYS
      ==> 0 -1	# 0
      ==> 0 1	# 1
      ==> 1 0	# 2
      ==>
      ==> N_RAYS
      ==> 3
      ==>
      ==> LINEALITY_SPACE
      ==>
      ==> ORTH_LINEALITY_SPACE
      ==> -1 0	# 0
      ==> 0 -1	# 1
      ==>
      ==> F_VECTOR
      ==> 1 3 2
      ==>
      ==> SIMPLICIAL
      ==> 1
      ==>
      ==> PURE
      ==> 1
      ==>
      ==> CONES
      ==> {}	# Dimension 0
      ==> {0}	# Dimension 1
      ==> {1}
      ==> {2}
      ==> {0 2}	# Dimension 2
      ==> {1 2}
      ==>
      ==> MAXIMAL_CONES
      ==> {0 2}	# Dimension 2
      ==> {1 2}
      ==>
      ==> MULTIPLICITIES
      ==> 1	# Dimension 2
      ==> 1
      ==>
      list L=c,d;
      fan g=fanViaCones(L);
      g;
      ==> _application PolyhedralFan
      ==> _version 2.2
      ==> _type PolyhedralFan
      ==>
      ==> AMBIENT_DIM
      ==> 2
      ==>
      ==> DIM
      ==> 2
      ==>
      ==> LINEALITY_DIM
      ==> 0
      ==>
      ==> RAYS
      ==> 0 -1	# 0
      ==> 0 1	# 1
      ==> 1 0	# 2
      ==>
      ==> N_RAYS
      ==> 3
      ==>
      ==> LINEALITY_SPACE
      ==>
      ==> ORTH_LINEALITY_SPACE
      ==> -1 0	# 0
      ==> 0 -1	# 1
      ==>
      ==> F_VECTOR
      ==> 1 3 2
      ==>
      ==> SIMPLICIAL
      ==> 1
      ==>
      ==> PURE
      ==> 1
      ==>
      ==> CONES
      ==> {}	# Dimension 0
      ==> {0}	# Dimension 1
      ==> {1}
      ==> {2}
      ==> {0 2}	# Dimension 2
      ==> {1 2}
      ==>
      ==> MAXIMAL_CONES
      ==> {0 2}	# Dimension 2
      ==> {1 2}
      ==>
      ==> MULTIPLICITIES
      ==> 1	# Dimension 2
      ==> 1
      ==>

User manual for Singular version 4-0-3, 2016, generated by texi2html.