On Mar 1, 2011, at 4:08 AM, Paul Anton Letnes wrote:
> I am not sure if my solution is the 'one right way', but it seems to work.
> See below.
Yes, this is a good way to using H5Lexists() to check for an existing
link to an object (a group in the original poster's case).
Quincey
> Good luck,
> Paul.
>
> subroutine open_or_create_h5group(loc_id, group_name, group_id, hdferr)
> ! Check if group with the given name exists. Create it if it doesn't,
> ! open it if it does.
> implicit none
> integer, intent(in) :: loc_id
> character(len=*), intent(in) :: group_name
> integer, intent(inout) :: hdferr
> integer, intent(out) :: group_id
> ! Local variables
> ! Variable for checking if a group exists or not
> logical :: group_exists
>
> call h5lexists_f(loc_id, group_name, group_exists, hdferr)
> if (group_exists) then
> call h5gopen_f(loc_id, group_name, group_id, hdferr)
> else
> call h5gcreate_f(loc_id, group_name, group_id, hdferr)
> end if
> end subroutine open_or_create_h5group
>
>
>
> On 1. mars 2011, at 10.11, santoshdarekar wrote:
>
>> I am implementing HDF5 where I need to check if given group name exists in
>> the file or not. How do I do it?
>> I checked using:
>>
>> H5G_info_t *grpInfo;
>> hid_t lapl_id = H5Pcreate(H5P_LINK_ACCESS);
>> H5Gget_info_by_name(file_id, groupName, grpInfo, lapl_id);
>>
>> Please let me know if I can use 'grpInfo' to open existing group?
>>
>> Actually, what I want is, if the group name doesn't exist then I should
>> create new with the same name.
>>
>> But, if it is there in the file then I should open it..
>>
>> Is it possible?
>>
>>
>>
>> -----
>> Best Regards,
>> Santosh
>> --
>> View this message in context:
>> http://hdf-forum.184993.n3.nabble.com/Check-if-group-exists-tp2601701p2601701.html
>> Sent from the hdf-forum mailing list archive at Nabble.com.
>>
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>
>
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