[Bioperl-l] Apparent disagreement between EUtilities and web page

[Michael Muratet]

Greetings

I am using EUtilities for the first time to retrieve data from NCBI  
and I could use some help trying to isolate a problem I have. I was  
using a script I put together from examples in the How-To and email  
archives

            $factory->set_parameters(-id => \@sub );

            while ( my $docsum =$factory->next_DocSum ) {
               my ($item) = $docsum- 
 >get_Items_by_name('GenomicInfoType');

               my ( $chrloc, $acc, $start, $end) = (
                                       $item- 
 >get_contents_by_name('ChrLoc'),
                                       $item- 
 >get_contents_by_name('ChrAccVer'),
                                       $item- 
 >get_contents_by_name('ChrStart'),
                                       $item- 
 >get_contents_by_name('ChrStop'));

and I found a record that has a suspect ChrStart field and no ChrStop  
field (using another example from the HowTo)

ID: 100039753
Name-Description-Orgname-Status-CurrentID-Chromosome-GeneticSource- 
MapLocation-OtherAliases-OtherDesignations-NomenclatureSymbol- 
NomenclatureName-NomenclatureStatus-TaxID-Mim-GenomicInfo-GeneWeight- 
Summary-ChrSort-ChrStart
Name                :LOC100039753
Description         :similar to putative
Orgname             :Mus musculus
Chromosome          :Y
GeneticSource       :genomic
MapLocation         :Y B
OtherDesignations   :hypothetical protein LOC100039753
TaxID               :10090
GeneWeight          :401
ChrSort             :~~last
ChrStart            :999999999

yet on the NCBI web page it shows a defined start and a stop for the  
locus.

I can fix the perl code so that it won't barf when the field isn't  
defined, but I'd like to get all the data and I can't figure out if  
the problem is on the client side or the server side. All the data  
comes from the same source, doesn't it?

Thanks

Mike