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Text File | 1992-04-20 | 1.8 KB | 57 lines | [TEXT/????] |
- HDF Vset release 2.1 MAY 1991
-
- In this version:
-
- (A) Vinsert now checks for and prevent duplicate links.
-
- (B) New utilities:
-
- vmake - allows you to create a vdata from ascii data, or to
- create a null vgroup, or create links in a HDF file.
-
- vshow - lists vset info in a file. Replaces vdir.
-
- (C) You may redefine fields that were originally defined.
-
- (D) New LONG integer storage
-
- If the integer values in your dataset are greater than 65535 you
- should store them as longs. Your integer array must be declared
- long, and the field associated with those long values should be
- declared to be of type LOCAL_LONGTYPE:
-
- long mylongdata[10];
- VDATA * vs;
-
- VSfdefine(vs,"BIGFLD",LOCAL_INTTYPE,1);
- VSwrite(vs,mylongdata,10,FULL_INTERLACEs);
- etc
-
- (E) New class fields
-
- A secondary field, the class field, now exists for each vdata
- or each vgroup. This field behaves like the file extension in
- file names, and should be used to classified related elements.
- Generally, an application should specify what class name to use.
-
- Class fields are accessed by the new routines VSgetclass, Vgetclass,
- VSsetclass, VSsetclass.
-
- (F) Multiple files
-
- Several files may be opened for vset access simultaneously.
- No new calls are needed.
- The parameter VFILEMAX (in vg.h) specifies the max number of files
- that may be accessed simultaneously.
-
- (G) Memory allocation for vdata and vgroups are now done dynamically,
- The parameters VSDIRMAX and VGDIRMAX are now omitted from vg.h.
-
- (H) Creation of empty vdatas and vgroups
- Empty vgroups may be created, but not vdatas.
-
- (I) HIGH-LEVEL routines for creating simple vgroups and vdatas.
- 3 routines, VHmakegroup, VHstoredata and VHstoredatam are one line
- calls to create and store data.
- Available in Fortran as VHFMKGP, VHFSD and VHFSDM.
-