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Hi Add, No, you do not need to give a length string.Why you are using scalar dataspace? Your attribute is an array of strings, right?
At 09:19 AM 9/13/2005, Ed Hartnett wrote:
Elena Pourmal <epourmal@xxxxxxxxxxxxx> writes: > Ed, > > You have to use> H5Tset_size (typeid,H5T_VARIABLE) instead of H5Tset_size(typeid, strlen(txt))> > Elena When I try this I get a seg fault when I reach H5Awrite... The question is, do I have to tell HDF5 the length of a string in a scalar string attribute? Thanks! Ed /* See if we can write an attribute to the root group. */ if ((fileid = H5Fcreate(FILE_NAME, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0) ERR; if ((grpid = H5Gopen(fileid, "/")) < 0) ERR; /* Attach a text attribute with some of Hamlet's lines. */ if ((spaceid = H5Screate(H5S_SCALAR)) < 0) ERR; if ((typeid = H5Tcopy(H5T_C_S1)) < 0) ERR; if (H5Tset_size(typeid, H5T_VARIABLE) < 0) ERR; if ((attid = H5Acreate(grpid, ATT1_NAME, typeid, spaceid, H5P_DEFAULT)) < 0) ERR; if (H5Awrite(attid, typeid, txt) < 0) ERR; -- Ed Hartnett -- ed@xxxxxxxxxxxxxxxx
----------------------------------------------------------------------------------------------- Elena Pourmal, HDF QA, Maintenance and Support Team Leader NCSA University of Illinois at Urbana-Champaign 605 E. Springfield Ave. Champaign, IL 61820 epourmal@xxxxxxxxxxxxx (217)333-0238 (office) (217)244-1987 (fax) ----------------------------------------------------------------------------------------------
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