thanks.
you did not answer the first two questions. the reason I asked the 1st question 
is I found the colors in positive and negative are slightly different. I hope 
it can be set colors for both side. from your answer, you seem say you dont 
have way to set (is it right?). in the last email, I tried to say it seem not 
logical that dose not
allow users to show bars for overlap region (I am sorry for giving negative 
opinion). I can not find reason why USCS browser gave this restriction. it 
seems OK if the restriction is removed. 
you suggested using two tracks or color. I am sorry it is not suitable for my 
case.
 
I really enjoy UCSC genome browser! thanks
YU


--- On Thu, 10/6/10, Antonio Coelho <[email protected]> wrote:


From: Antonio Coelho <[email protected]>
Subject: Re: [Genome] custom track with variable span
To: "Yuan Jian" <[email protected]>
Cc: [email protected]
Received: Thursday, 10 June, 2010, 9:55 PM


Hello again Yu,
  I'm sorry for any misunderstanding. bedGraphs cannot handle overlapping data, 
and will behave in unexpected ways if given any.
This means that your positive and negative strand data cannot be displayed 
together if they have overlapping regions.

Unfortunately, given your current needs, I think it would be best that you use 
two separate custom tracks to represent your data. You will lose the overlap, 
but will be able to customize the color and display of each track to your 
liking.

We are working on a means to overlay separate data sets, but we currently have 
no time line as to when this feature will be added.

Best
Antonio Coelho
UCSC Genome Bioinformatics Group

Yuan Jian wrote:
> thanks.
> several questions for the "negative bar"
> 1/ how to change the color for "negative bar"?
> 2/ how to set yLineMark for negative bar?
> 2/ when I gave positive and negative value for the same region with two 
> lines, only one is shown. when I gave pos and neg to the regions with the 
> same start locus and different end locus, both went to the negative bar. I am 
> not very clear the logical. could you please tell me more details for the 
> negative bar?
> 
> Anji
> 
> thanks
> 
> 
> --- On *Fri, 4/6/10, Antonio Coelho /<[email protected]>/* wrote:
> 
> 
>     From: Antonio Coelho <[email protected]>
>     Subject: Re: [Genome] custom track with variable span
>     To: "Yuan Jian" <[email protected]>
>     Cc: [email protected]
>     Received: Friday, 4 June, 2010, 11:17 PM
> 
>     Hello Yu,
>        It is possible to display bars below the line by giving them
>     negative
>     values. You could try making all of your negative strand values be
>     negative, which would separate them from your positive strands.
>        However, any overlapping entries will not display properly.
>     Unfortunately, there is no way of avoiding that, so you may have more
>     luck using two separate displays.
> 
>         Sorry for the inconvenience, and best of luck. Please contact us
>     again if you have other questions.
>       Best
>     Antonio Coelho
>     UCSC Genome Bioinformatics Group
> 
>     Yuan Jian wrote:
>     > Now I can use bedGraph to show bar for variable regions. my
>     another question is
>     > I want to show two bars on two sides of the region to show + and
>     - strand.
>     > one bar is up of a line (as normal), another bar is on opposite
>     side.
>     >
>     >                            __
>     >                            |  |
>     > something like -------------------------------------------
>     >                                |   |
>     >
>     >                                |   |
>     >
>     >                                ----               >
>     >
>     > thanks
>     > YU
>     >
>     >  can I show the bar in up and down of the line
>     >
>     > --- On Wed, 2/6/10, Jennifer Jackson <[email protected]
>     </mc/[email protected]>> wrote:
>     >
>     > From: Jennifer Jackson <[email protected]
>     </mc/[email protected]>>
>     > Subject: Re: [Genome] custom track with variable span
>     > To: "Yuan Jian" <[email protected]
>     </mc/[email protected]>>
>     > Cc: [email protected] </mc/[email protected]>
>     > Received: Wednesday, 2 June, 2010, 6:16 PM
>     >
>     > Hello,
>     >
>     > Using the bedGraph format would allow you to specify different
>     spans in a single graphing custom track file.
>     >
>     > http://genome.ucsc.edu/goldenPath/help/bedgraph.html
>     >
>     >   Data format:
>     >   Following the track definition line are the track data
>     >   in four column BED format.
>     >
>     >   chromA  chromStartA  chromEndA  dataValueA
>     >   chromB  chromStartB  chromEndB  dataValueB
>     >
>     > If the dataset is large, once you have the data in bedGraph
>     format, convert to bigWig.
>     >
>     > http://genome.ucsc.edu/goldenPath/help/bigWig.html
>     > (see "Example Three")
>     >
>     > General graphing track help:
>     >
>     
>http://genomewiki.ucsc.edu/index.php/Selecting_a_graphing_track_data_format
>     >
>     > Hopefully this addresses your question, but please let us know
>     if you need more assistance or if your question has been
>     misunderstood.
>     >
>     > Thanks,
>     > Jennifer
>     >
>     > ---------------------------------
>     > Jennifer Jackson
>     > UCSC Genome Informatics Group
>     > http://genome.ucsc.edu/
>     >
>     > On 6/1/10 12:19 AM, Yuan Jian wrote:
>     >       >> Dear UCSC genome team,
>     >>
>     >> variableStep in wiggle custom track format, how can I change
>     span width for different item as below?
>     >>
>     >> browser position chr19:59304200-59310700
>     >> track type=wiggle_0 name="variableStep"
>     description="variableStep format" \
>     >>       visibility=full autoScale=off viewLimits=0.0:25.0
>     color=50,150,255 \
>     >>       yLineMark=11.76 yLineOnOff=on priority=10
>     >> variableStep chrom=chr19
>     >> 59304701 span=100 10.0
>     >> 59304901 span=200 12.5
>     >> 59305401 span=300 15.0
>     >> 59305601 span=100  17.5
>     >> 59305901 span=100  20.0
>     >> 59306081 span=100  17.5
>     >> 59306301 span=300 15.0
>     >> 59306691 span=300 12.5
>     >> 59307871 span=100 10.0
>     >>
>     >>
>     >>
>     >>
>     >>
>     >> _______________________________________________
>     >> Genome maillist  -  [email protected]
>     </mc/[email protected]>
>     >> https://lists.soe.ucsc.edu/mailman/listinfo/genome
>     >>         >
>     >
>     >
>     >           > _______________________________________________
>     > Genome maillist  -  [email protected]
>     </mc/[email protected]>
>     > https://lists.soe.ucsc.edu/mailman/listinfo/genome
>     >   
> 
>   




      
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