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HDF Reference Manual

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H - H Advanced Interface

Happendable -- Specifies that the specified element can be appended to

Hcache -- Enables low-level caching for the specified file.

Hdeldd -- Deletes a tag and reference number from the data descriptor list.

Hendaccess -- Terminates access to a data object by disposing of the access identifier.

Hendbitaccess -- Disposes of the specified bit-access file element.

Hexist -- Locates an object in an HDF file.

Hfidinquire -- Returns file information through a reference of its file identifier.

Hfind -- Locates the next object to be searched for in an HDF file.

Hgetbit -- Reads one bit from the specified bit-access element.

Hgetelement -- Reads the data element for the specified tag and reference number and writes it to the data buffer.

Hinquire -- Returns access information about a data element.

Hlength -- Returns the length of a data object specified by the tag and reference number.

Hnewref -- Returns a reference number that can be used with any tag to produce a unique tag /reference number pair.

Hnextread -- Searches for the next data descriptor that matches the specified tag and reference number.

Hnumber/hnumber -- Returns the number of instances of a tag in a file.

Hoffset -- Returns the offset of a data element in the file.

Hputbit -- Writes one bit to the specified bit-access element.

Hputelement -- Writes a data element or replaces an existing data element in a HDF file.

Hread -- Reads the next segment in a data element.

Hseek -- Sets the access pointer to an offset within a data element.

Hsetlength -- Specifies the length of a new HDF element.

Hshutdown -- Deallocates buffers previously allocated in other H routines.

Htagnewref -- Returns a reference number that is unique for the specified file that will correspond to the specified tag. Creates a new tag/reference number pair.

Htrunc -- Truncates the data object specified by the h_id to the length trunc_len.

Hwrite -- Writes the next data segment to a specified data element.


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