Hi,

thank you
you reply make me clear about the difference~~

Best Wishes.

On Fri, Jun 26, 2009 at 5:51 AM, Jennifer Jackson <[email protected]> wrote:

> Hello,
>
> Using -fine will definitely cause different results as webBlat does not use
> -fine. Also, the length of your probe may cause problems (lengths shorter
> than 25 bases). See "About Blat" at this link:
> http://genome.ucsc.edu/cgi-bin/hgBlat
>
> The exact version of BLAT (and the options used) between the line command
> version, the version used to align track data, webBlat are not identical.
> Differences in hardware can also cause small changes. Therefore, exact
> duplication of results is never expected for all cases.
>
> The best parameters for you to use are those that give the best answers for
> your experiment given the amount of compute resource available. The
> parameters used for webBlat are those that provide the best answers along
> with considerations to speed and optimized utilization of UCSC's resources.
> The parameters used for tracks vary considerably between the different
> datasets.
>
> I hope this helps even though it is not an exact answer. If you have an
> specific example representative of a larger group of differences (not a
> single case out of many identical results) that you think cannot be
> explained by this, you can send it to me directly (not the entire list) and
> we can give some feedback. Include your exact line commands/web input for
> each example and enough data that each result can be duplicated.
>
> Thanks,
> Jennifer Jackson
> UCSC Genome Bioinformatics Group
>
>
> Daofeng Li wrote:
>
>> Hi,
>> yes i noticed that....but sorry i can not understand C  language
>> command line i use add -fine and -q=rna used to map probe of microarray to
>> genome
>> so maybe that cause the inconsistent from Jim's formula?
>>
>> On Wed, Jun 24, 2009 at 10:13 PM, Hiram Clawson <[email protected]>
>> wrote:
>>
>>
>>
>>> Please note:
>>>
>>> http://genome.ucsc.edu/FAQ/FAQblat
>>>
>>> --Hiram
>>>
>>>
>>>
>>> Daofeng Li wrote:
>>>
>>>
>>>
>>>> Hi,
>>>>
>>>> i think this problem might be discussed for many times and i do find som
>>>> search results for that
>>>> one mail i searched is of Jim which contains:
>>>> ////
>>>> Hmm.  You could just use the -out=blast option if you
>>>> really want a drop-in replacement.    Otherwise try
>>>>
>>>> percentId = 100.0 * (match + repMatch)  /
>>>>   (misMatch + match + repMatch + qNumInsert + tNumInsert)
>>>> /////
>>>>
>>>> i had try that formula,find the result output by command line blat still
>>>> different with webblat...
>>>> can anyone give another calc method? or something of mine wrong?
>>>>
>>>> Best Wishes.
>>>>
>>>>
>>>>
>>>
>>
>>
>>
>


-- 
Daofeng Li,PhD Candidate
China Agricultural University
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