Appreciated your help and thanks for that reply. I found that mistake soon
after I mailed.
BTW I have not looked at your other suggestion for reading HDf5 data row by
row. I will look at your program and see what am I doing wrong.
Thanks and regards
On Wed, Oct 17, 2012 at 11:43 AM, Barbara Jones <bljo...@hdfgroup.org>wrote:
> Hi,
>
> Are you creating the dataset with a float datatype?
>
> Attached is an HDF4 program that creates a character dataset.
> It creates the dataset as follows:
>
> sds_id = SDcreate(sd_id, "data1", DFNT_CHAR, rank, dims);
>
> -Barbara
>
>
> ====================
> Barbara Jones
> The HDF Helpdesk
>
> The HDF Group
> h...@hdfgroup.org
> ====================
>
>
> Folks
>> I am trying to write a simple character array through SDwritedata but
>> somehow my output SDS field ends up being of 32 bit floating bit type and
>> the values are all big floating point values. What am I doing wrong? See
>> some portions of my code below:
>>
>> char * ref_name = NULL:
>> int32 ndata;
>> int i;
>>
>> ndata = 7;
>> ioparam->out_sds.data_type = DFNT_CHAR;
>> ioparam->out_sds.data_size = DFKNTsize(ioparam->out_sds.**data_type);
>>
>> for (i = 0; i < ndata; i++) /* BIG Assumption that ref data will be always
>> 1D */
>> {
>> ref_name = (void *) calloc (size, sizeof(char));
>> status = get_name (foo, ref_name, size); /* Here the ref_name is
>> set */
>> start[0] = i;
>> edge[0] = 1;
>> printf("Dataset: %s is %s\n",ioparam->in_sds.name,**ref_name); /*
>> Here the names are printed correctly */
>> if (SDwritedata(ioparam->out_sds.**sds_id, start, NULL, edge,
>> (VOIDP)ref_name) == FAIL) {
>> fprintf(stderr, "Error writing ref data from SDS %s\n", ioparam->
>> out_sds.name);
>> return -1;
>> }
>> if (ref_name != NULL) free(ref_name);
>> }
>>
>> So the names are all printed correctly when I print them on the screen but
>> when I check the output file the fields are all float32.
>>
>> Am I missing something here?
>> Thanks
>>
>>
> --
> Barbara L. Jones
> bljo...@hdfgroup.org
> _______________________________________________
> Hdf-forum is for HDF software users discussion.
> Hdf-forum@hdfgroup.org
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>
>
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