User: Guido Hooiveld

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Guido Hooiveld2.5k
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Wageningen University, Wageningen, the Netherlands
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Posts by Guido Hooiveld

<prev • 415 results • page 1 of 42 • next >
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Comment: C: Ask for help on the preprocessing of GEO microarray data with Oligo and affy pac
... Please show your complete code, error and sessionInfo (as per forum guidelines), otherwise it is difficult/impossible to provide help. ...
written 19 hours ago by Guido Hooiveld2.5k
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Comment: C: kegg.gsets: unknown species
... In contrast to what you think, the function `kegg.gsets()` does NOT download the pathway information directly from the KEGG database, but it rather uses a local copy of the pathway information (or it downloads this file from the website of the `gage` authors). Relevant code in the function `kegg.gse ...
written 7 weeks ago by Guido Hooiveld2.5k
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Comment: C: Does anyone have experience using the massiR package?
... Your lines of code worked fine for me when starting directly from a set of raw data (CEL) files. This means that your input data (i.e. `set8`) was somehow wrong... Assuming you would like to use the expression data in the Series Matrix File available at GEO, I would recommend to use functions from t ...
written 9 weeks ago by Guido Hooiveld2.5k
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Comment: C: Does anyone have experience using the massiR package?
... I irregularly use this library. If I recall correctly, I had to change few lines of code to get it working. I also do not use the built-in sets of Y-chromosome located probes but I extract these from an OrgDb. It would be helpful if you could post some code that shows where you get stuck. ...
written 9 weeks ago by Guido Hooiveld2.5k
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Comment: C: Results from variancePartition not matching those from lme4
... Hi, With interest I have read this thread, because some of our transcriptome experiments have a complex design for which analysis by linear mixed models would be useful. However, considering the fact that the `lme4` and `variancePartition` results apparently don’t differ (actually, are in agreement) ...
written 9 weeks ago by Guido Hooiveld2.5k
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Answer: A: CDF not found
... The Affymetrix Clariom S Rat arrays are so-called 3rd generation expression arrays, and the analysis of these type of arrays is NOT possible anymore with the library `affy` (see e.g. [here][1]). In contrast, you should use the library `oligo` ([here][2]) + the corresponding PdInfo (platform design i ...
written 3 months ago by Guido Hooiveld2.5k
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Answer: A: Microarray Data Analysis CDF Problem
... Hi, First some remarks: Use indeed only the package `oligo` to read and process these files, and not `affy`. There is indeed no CDF available for the HuGene ST 1.1 arrays! That's why you need the `oligo`-based framework with the corresponding PlatformDesign `(PdInfo`) info package! gcRMA normalizat ...
written 4 months ago by Guido Hooiveld2.5k
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Comment: C: Inconsistent results when normalizing HTA2.0 arrays at "level=core"
... Thanks James, got it! Regarding putting it on a TODO list: on one hand, for the reasons you explained above, I agree it may feel it hasn't high priority. On the other hand, because these arrays can only be processed through the `oligo` framework, and within `oligo` only the function `fitProbeLevelMo ...
written 4 months ago by Guido Hooiveld2.5k
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Inconsistent results when normalizing HTA2.0 arrays at "level=core"
... I noticed an intriguing discrepancy when I normalized a set of HTA2.0 arrays (GSE111156, [here][1]). Specifically, a different number of probesets is returned when using the `rma` or `fitProbeLevelModel` function in `oligo`, even if in both cases the argument `target=core` is used. I initially notic ...
affycoretools oligo rma hta2.0 fitprobelevelmodel written 4 months ago by Guido Hooiveld2.5k • updated 4 months ago by James W. MacDonald51k
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Comment: C: u133aaofav2 platform gcrma Normalization
... This has been asked here before. As far as I know Affymetrix has never released the probe information file for this array, and therefore it could not made available at Bioconductor. gcRMA normalization is thus not possible (in principle). See e.g. here: [link][1]. However, it has been suggested by ...
written 4 months ago by Guido Hooiveld2.5k

Latest awards to Guido Hooiveld

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Scholar 10 months ago, created an answer that has been accepted. For A: clusterProfiler: Which GO version is used behind ?
Teacher 10 months ago, created an answer with at least 3 up-votes. For A: run affy package encounts clariomdhumancdf error
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Scholar 10 months ago, created an answer that has been accepted. For A: run affy package encounts clariomdhumancdf error
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Scholar 2.4 years ago, created an answer that has been accepted. For A: clusterProfiler: Which GO version is used behind ?
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