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HDF Reference Manual

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VS - Vdata Interface

VHstoredata/vhfsd/vhfscd -- Creates and writes to a single-field vdata.

VHstoredatam/vhfsdm/vhfscdm -- Creates and writes to a multi-order, single-field vdata.

VSappendable/vsapp (Obsolete) -- Makes it possible to append to a vdata.

VSattach/vsfatch -- Attaches to an existing vdata or creates a new vdata.

VSattrinfo/vsfainf -- Retrieves attribute information of a vdata or a vdata field.

VSdelete/vsfdlte -- Remove a vdata from a file.

VSdetach/vsfdtch -- Detaches from the current vdata, terminating further access to that vdata.

VSelts/vsfelts -- Determines the number of records in a vdata.

VSfdefine/vsffdef -- Defines a new field for in a vdata.

VSfexist/vsfex -- Returns a value of 1 if all field(s) exist and FAIL (or -1) otherwise.

VSfind/vsffnd -- Returns the reference number of a vdata, given its name.

VSfindattr/vsffdat -- Returns the index of an attribute of a vdata or vdata field.

VSfindclass/vffcls -- Returns the reference number of the first vdata with a given vdata class name

VSfindex/vsffidx -- Retrieves the index of a field within a vdata.

VSfnattrs/vsffnas -- Returns the number of attributes attached to a vdata or the number of attributes attached to a vdata field.

VSfpack/vsfcpak/vsfnpak -- Packs field data into a buffer or unpacks buffered field data into vdata field(s) for fully interlaced fields.

VSgetattdatainfo -- Retrieves location and size of the data of an attribute.

VSgetattr/vsfgnat/vsfgcat -- Retrieves the attribute values of a vdata or vdata field.

VSgetblockinfo/vsfgetblinfo -- Retrieves the block size and the number of blocks for a linked-block Vdata element.

VSgetclass/vsfgcls -- Retrieves the vdata class name, if any.

VSgetdatainfo -- Retrieves location and size of data blocks in a specified vdata, after a specified data block.

VSgetexternalinfo -- Retrieves information about external file and external data of the vdata.

VSgetfields/vsfgfld -- Retrieves the field names of all of the fields in a Vdata.

VSgetid/vsfgid -- Sequentially searches through a file for vdatas.

VSgetinterlace/vsfgint -- Returns the interlace mode of a vdata.

VSgetname/vsfgnam -- Retrieves the name of a vdata.

VSgetvdatas -- Retrieves reference numbers of vdatas in a file or in a vgroup.

VSgetversion/vsgver -- Returns the version number of a vdata.

VSinquire/vsfinq -- Retrieves general information about a vdata.

VSisattr/vsfisat -- Determines whether a vdata is an attribute.

VSisinternal -- Determine if a vdata was created by the library internally.

VSlone/vsflone -- Retrieves the reference numbers of all lone vdatas, i.e., vdatas that are not grouped with other objects, in a file.

VSnattrs/vsfnats -- Returns the total number of attributes of a vdata and of its fields.

VSofclass -- Retrieves reference numbers of vdatas of the specified class.

VSread/vsfrd/vsfrdc/vsfread -- Retrieves data from a vdata.

VSseek/vsfseek -- Provides a mechanism for random-access I/O within a vdata.

VSsetattr/vsfsnat/vsfscat -- Sets an attribute of a vdata or a vdata field.

VSsetblocksize/vsfsetblsz -- Sets linked-block Vdata element block size.

VSsetclass/vsfscls -- Sets the class name of a vdata.

VSsetexternalfile/vsfsextf -- Stores vdata information in an external file.

VSsetfields/vsfsfld -- Specifies the fields to be accessed.

VSsetinterlace/vsfsint -- Sets the interlace mode of a vdata.

VSsetname/vsfsnam -- Assigns a name to a vdata.

VSsetnumblocks/vsfsetnmbl -- Sets the number of blocks for a linked-block Vdata element.

VSsizeof/vsfsiz -- Computes the size, in bytes, of the given field(s) for the local machine.

VSwrite/vsfwrt/vsfwrtc/vsfwrit -- Writes data to a vdata.


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