Re: Error when adding THnSparseD objects

Hi,

this was a bug in the persistency of TExMap which is used by THnSparse. The bug is already fixed in the trunk and will get fixed in v5-24-00-patches soon, so it should arrive at Alice soon. With that fix I can read and write files with a THnSparse in any combination of writing / reading and 64 or 32 bits.

Thanks for the report!

Cheers, Axel.

Axel Naumann wrote on 07/21/2009 12:05 PM:
> Hi Alberto,
>
> your files work for me - I can run
>
> $ hadd fileadd.root file1.root file2.root
> Target file: fileadd.root
> Source file 1: file1.root
> Source file 2: file2.root
> Target path: fileadd.root:/
>
> just fine with the trunk. Which version do you use? What platform are
> you on?
>
> Cheers, Axel.
>
> Alberto Pulvirenti wrote on 07/21/2009 10:52 AM:

>> I'll try.
>> Hope that they are not too large to be attached in an email.
>> I find that this error appears also if I use 'hadd'.
>>
>> Cheers
>>
>>     Alberto
>>
>> Axel Naumann wrote:
>>> Hi Alberto,
>>>
>>> can you send me the two files or better yet the two THnSparse for which
>>> this happens?
>>>
>>> Cheers, Axel.
>>>
>>> On 2009-07-21 10:46, Alberto Pulvirenti wrote:
>>>> Dear all,
>>>>
>>>> I have two files which are outputs of the same analysis done on
>>>> different data sets. Each file contains a TList of THnSparseD objects
>>>> with well-specified names.
>>>>
>>>> I want to generate a file with the same structure, where each 
>>>> THnSparseD
>>>>  should be the sum of the two omonyme objects in the source files.
>>>>
>>>> I managed to prepare a macro which reads the two files and adds up the
>>>> two such histograms, but I always encounter a warning like this
>>>>
>>>> Error in <TExMap::Expand>: slot 568 not empty (should never happen)
>>>>
>>>> what does it mean? How can I check it?
>>>>
>>>> Thanks, cheers
>>>>
>>>>     Alberto
>>>>
>>>>