help with ACME package
1
0
Entering edit mode
@sean-davis-490
Last seen 3 months ago
United States
On Tue, Jun 14, 2011 at 6:34 PM, Adeolu Adewoye <badicrown at="" hotmail.com=""> wrote: > > Dear Sean, > > I am trying to analyse my NimbleGen MeDIP-chip data using your ACME package > but have few questions. > > The output file from findRegions command generate suggested enrichment > regions based on the chosen threshold right? What is the statistical test > involved ( in order word the output suggested enrichment showing mean and > median? Is it possible to also output the pValue or probability of > enrichment? The findRegions function simply uses a threshold (default 1e-4) p-values from a moving-window chi-square test at each probe. All of the regions reported by findRegions that have a value of TRUE in the TF (for True/False) column are considered "positive" and you will need to play with the findRegions threshold a bit to find what works "best" for your experiment. The mean and median values that are output by findRegions can be used in a ranking fashion with higher means or medians being "more enriched". > > Can you also please explain a bit more on how to load and view .sgr file in > the UCSC Genome Browser? .sgr files are meant to be loaded into the IGB browser. I do not think the .sgr file format is supported by the UCSC genome browser. > > Please not that?I have tried few things to ask for help using the > bioconductor distribution list with no response. Sorry about that. Thanks for being persistent. Sean
probe probe • 1.3k views
ADD COMMENT
0
Entering edit mode
@sean-davis-490
Last seen 3 months ago
United States
On Tue, Jun 14, 2011 at 9:07 PM, Sean Davis <sdavis2 at="" mail.nih.gov=""> wrote: > On Tue, Jun 14, 2011 at 6:34 PM, Adeolu Adewoye <badicrown at="" hotmail.com=""> wrote: >> >> Dear Sean, >> >> I am trying to analyse my NimbleGen MeDIP-chip data using your ACME package >> but have few questions. >> >> The output file from findRegions command generate suggested enrichment >> regions based on the chosen threshold right? What is the statistical test >> involved ( in order word the output suggested enrichment showing mean and >> median? Is it possible to also output the pValue or probability of >> enrichment? > > The ?findRegions function simply uses a threshold (default 1e-4) > p-values from a moving-window chi-square test at each probe. ?All of > the regions reported by findRegions that have a value of TRUE in the > TF (for True/False) column are considered "positive" and you will need > to play with the findRegions threshold a bit to find what works "best" > for your experiment. ?The mean and median values that are output by > findRegions can be used in a ranking fashion with higher means or > medians being "more enriched". > >> >> Can you also please explain a bit more on how to load and view .sgr file in >> the UCSC Genome Browser? > > .sgr files are meant to be loaded into the IGB browser. ?I do not > think the .sgr file format is supported by the UCSC genome browser. Hi, Adeolu. I added a simple write.bedGraph() function to ACME to generate bedGraph format files for UCSC. It is available in the devel branch (in a day or so), version 2.9.1 of ACME. Sean >> >> Please not that?I have tried few things to ask for help using the >> bioconductor distribution list with no response. > > Sorry about that. ?Thanks for being persistent. > > Sean >
ADD COMMENT
0
Entering edit mode
Does anyone try ACME on medip-chip? On Wed, Jun 15, 2011 at 12:38 PM, Sean Davis <sdavis2 at="" mail.nih.gov=""> wrote: > On Tue, Jun 14, 2011 at 9:07 PM, Sean Davis <sdavis2 at="" mail.nih.gov=""> wrote: >> On Tue, Jun 14, 2011 at 6:34 PM, Adeolu Adewoye <badicrown at="" hotmail.com=""> wrote: >>> >>> Dear Sean, >>> >>> I am trying to analyse my NimbleGen MeDIP-chip data using your ACME package >>> but have few questions. >>> >>> The output file from findRegions command generate suggested enrichment >>> regions based on the chosen threshold right? What is the statistical test >>> involved ( in order word the output suggested enrichment showing mean and >>> median? Is it possible to also output the pValue or probability of >>> enrichment? >> >> The ?findRegions function simply uses a threshold (default 1e-4) >> p-values from a moving-window chi-square test at each probe. ?All of >> the regions reported by findRegions that have a value of TRUE in the >> TF (for True/False) column are considered "positive" and you will need >> to play with the findRegions threshold a bit to find what works "best" >> for your experiment. ?The mean and median values that are output by >> findRegions can be used in a ranking fashion with higher means or >> medians being "more enriched". >> >>> >>> Can you also please explain a bit more on how to load and view .sgr file in >>> the UCSC Genome Browser? >> >> .sgr files are meant to be loaded into the IGB browser. ?I do not >> think the .sgr file format is supported by the UCSC genome browser. > > Hi, Adeolu. > > I added a simple write.bedGraph() function to ACME to generate > bedGraph format files for UCSC. ?It is available in the devel branch > (in a day or so), version 2.9.1 of ACME. > > Sean > > >>> >>> Please not that?I have tried few things to ask for help using the >>> bioconductor distribution list with no response. >> >> Sorry about that. ?Thanks for being persistent. >> >> Sean >> > > _______________________________________________ > Bioconductor mailing list > Bioconductor at r-project.org > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor
ADD REPLY
0
Entering edit mode
Does anyone try ACME on medip-chip? On Wed, Jun 15, 2011 at 12:38 PM, Sean Davis <sdavis2 at="" mail.nih.gov=""> wrote: > On Tue, Jun 14, 2011 at 9:07 PM, Sean Davis <sdavis2 at="" mail.nih.gov=""> wrote: >> On Tue, Jun 14, 2011 at 6:34 PM, Adeolu Adewoye <badicrown at="" hotmail.com=""> wrote: >>> >>> Dear Sean, >>> >>> I am trying to analyse my NimbleGen MeDIP-chip data using your ACME package >>> but have few questions. >>> >>> The output file from findRegions command generate suggested enrichment >>> regions based on the chosen threshold right? What is the statistical test >>> involved ( in order word the output suggested enrichment showing mean and >>> median? Is it possible to also output the pValue or probability of >>> enrichment? >> >> The ?findRegions function simply uses a threshold (default 1e-4) >> p-values from a moving-window chi-square test at each probe. ?All of >> the regions reported by findRegions that have a value of TRUE in the >> TF (for True/False) column are considered "positive" and you will need >> to play with the findRegions threshold a bit to find what works "best" >> for your experiment. ?The mean and median values that are output by >> findRegions can be used in a ranking fashion with higher means or >> medians being "more enriched". >> >>> >>> Can you also please explain a bit more on how to load and view .sgr file in >>> the UCSC Genome Browser? >> >> .sgr files are meant to be loaded into the IGB browser. ?I do not >> think the .sgr file format is supported by the UCSC genome browser. > > Hi, Adeolu. > > I added a simple write.bedGraph() function to ACME to generate > bedGraph format files for UCSC. ?It is available in the devel branch > (in a day or so), version 2.9.1 of ACME. > > Sean > > >>> >>> Please not that?I have tried few things to ask for help using the >>> bioconductor distribution list with no response. >> >> Sorry about that. ?Thanks for being persistent. >> >> Sean >> > > _______________________________________________ > Bioconductor mailing list > Bioconductor at r-project.org > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor
ADD REPLY

Login before adding your answer.

Traffic: 523 users visited in the last hour
Help About
FAQ
Access RSS
API
Stats

Use of this site constitutes acceptance of our User Agreement and Privacy Policy.

Powered by the version 2.3.6