User: Matthew Keller

gravatar for Matthew Keller
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Posts by Matthew Keller

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Three tenure track assistant professorship openings at Inst. Behavioral Genetics, University of Colorado Boulder
... Tenure Track Assistant Professorships at the Institute for Behavioral Genetics The Institute for Behavioral Genetics, University of Colorado Boulder, invites applications for three tenure track Assistant Professorships, each with a joint appointment in an appropriate academic department, to be appo ...
genetics brain written 7.0 years ago by Matthew Keller100
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Answer: A: Three tenure track assistant professorship openings at Inst. Behavioral Genetics
... Tenure Track Assistant Professorships at the Institute for Behavioral Genetics The Institute for Behavioral Genetics, University of Colorado Boulder, invites applications for three tenure track Assistant Professorships, each with a joint appointment in an appropriate academic department, to be appo ...
written 7.0 years ago by Matthew Keller100
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segfault when using data.table package in conjunction with foreach
... Hi all, I'm trying to use the package read.table within a foreach loop. I'm grabbing 500M rows of data at a time from two different files and then doing an aggregate/tapply like function in read.table after that. I had planned on doing a foreach loop 39 times at once for the 39 files I have, but ob ...
written 7.1 years ago by Matthew Keller100
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[R] tapply for enormous (>2^31 row) matrices
... Thank you all very much for your help (on both the r-help and the bioconductor listserves). Benilton - I couldn't get sqldf to install on the server I'm using (error is: Error : package 'gsubfn' does not have a name space). I think this was a problem for R 2.13, and I'm trying to get the admin's to ...
process written 7.1 years ago by Matthew Keller100 • updated 7.1 years ago by Gabor Grothendieck30
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tapply for enormous (>2^31 row) matrices
... Hello all, I just sent this to the main R forum, but realized this audience might have more familiarity with this type of problem... ---------- Forwarded message ---------- From: Matthew Keller Date: Tue, Feb 21, 2012 at 4:04 PM Subject: tapply for enormous (>2^31 row) matrices To: r help ...
written 7.1 years ago by Matthew Keller100 • updated 7.1 years ago by Hervé Pagès ♦♦ 13k
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Comment: C: Trouble installing bioconductor packages on 64 bit R on OS X Leopard
... Hi Patrick, Simon, and everyone else, Thanks for the help. This was tougher than it should have been, but it's clearer to me now why I ran into this problem. I'll try to summarize in case others get into this jam. Here's what I did, then how I fixed it: 1) downloaded R 64 bit 2) installed the x co ...
written 11.1 years ago by Matthew Keller100
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Trouble installing bioconductor packages on 64 bit R on OS X Leopard
... Hello all, I've been working on this for hours. Have gone through the FAQs, Simon's R for Mac OS X Developer's Page, and various threads on the listserves. I.e., I feel like I've followed all the instructions I can find, yet to no avail. On newest intel MacPro with Leopard, I have 64 bit R install ...
affy written 11.1 years ago by Matthew Keller100 • updated 11.1 years ago by Simon Urbanek60
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ways to measure runs of homozygosity?
... Hi all, I am about to get back into a project re runs of homozygosity. This summer I used the Affy CNV algorithm, which used HMMC to determine whether a given SNP was within a homozygous run. I have since seen the Double Helix has an algorithm as well - although it seems simpler than the Affy one ( ...
snp affy written 11.2 years ago by Matthew Keller100
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Survey for genetics labs: how do you store & manage your data?
... Hello all, I am an asst. professor at CU Boulder and a fellow at the Institute for Behavioral Genetics (IBG). I am writing this email on behalf of my colleagues here at IBG. We are in the process of trying to determine the best way forward for storing large databases (100, 500, and 1000K SNP chip d ...
sequencing genetics process written 11.2 years ago by Matthew Keller100
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Answer: A: About CLAC package
... Hi Allen, I have never used CLAC before, but if you read the error message, you'll see that somewhere, the function max() is being called on a factor. Try traceback(), which might tell you where max is being called. Better yet, check over the classes of your data to make sure that you don't have a ...
written 11.4 years ago by Matthew Keller100

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