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Guest User ★ 12k@guest-user-4897
Last seen 8.3 years ago
Dear R helpers, I have been learning 'affy' package and currently trying 'expresso' function of which allows background correction, normalization, PMcorrection and summarization in on step. I have try 'expresso' with following script with the "af" Affybatch loess.none.mas <- expresso(af,normalize.method="loess", bgcorrect.method="none", pmcorrect.method="mas", summary.method="mas") #It continues computing till it gives an error as following Done with 5 vs 22 in iteration 1 Done with 5 vs 23 in iteration 1 Done with 5 vs 24 in iteration 1 Error in simpleLoess(y, x, w, span, degree, parametric, drop.square, normalize, : NA/NaN/Inf in foreign function call (arg 1) Could you please tell me what happens and how to correct it? -- output of sessionInfo(): R version 2.15.3 (2013-03-01) Platform: x86_64-w64-mingw32/x64 (64-bit) locale:  LC_COLLATE=Thai_Thailand.874 LC_CTYPE=Thai_Thailand.874  LC_MONETARY=Thai_Thailand.874 LC_NUMERIC=C  LC_TIME=Thai_Thailand.874 attached base packages:  stats graphics grDevices utils datasets methods base other attached packages:  affy_1.36.1 Biobase_2.18.0 BiocGenerics_0.4.0 loaded via a namespace (and not attached):  affyio_1.26.0 BiocInstaller_1.8.3 preprocessCore_1.20.0  zlibbioc_1.4.0 -- Sent via the guest posting facility at bioconductor.org.