A function I am calling from within one of my functions occasionally returns an error (bug in the other function, not my fault). When this happens, I would like for the value of the function that is blowing up to be "NA". Instead, my whole function blows up. Is there a way I can do something like this? my.function(x) { if (is.error(function.someone.else(x))) {NA} else {function.someone.else(x)} } Unfortunately, R doesn't seem to provide for this "is.error" approach. Is there another answer? Thanks, Mark

> Unfortunately, R doesn't seem to provide for this "is.error" approach. > Is there another answer? Look at the function 'try()', which should allow you to do the sort of things that you would like.

Look at the try() function. "Kimpel, Mark W" <mkimpel@iupui.edu> writes: > A function I am calling from within one of my functions occasionally > returns an error (bug in the other function, not my fault). When this > happens, I would like for the value of the function that is blowing up > to be "NA". Instead, my whole function blows up. > > Is there a way I can do something like this? > > my.function(x) > { > if (is.error(function.someone.else(x))) {NA} else > {function.someone.else(x)} > } > > Unfortunately, R doesn't seem to provide for this "is.error" approach. > Is there another answer? > > Thanks, > > Mark > > _______________________________________________ > Bioconductor mailing list > Bioconductor@stat.math.ethz.ch > https://www.stat.math.ethz.ch/mailman/listinfo/bioconductor > -- rossini@u.washington.edu http://www.analytics.washington.edu/ Biomedical and Health Informatics University of Washington Biostatistics, SCHARP/HVTN Fred Hutchinson Cancer Research Center UW (Tu/Th/F): 206-616-7630 FAX=206-543-3461 | Voicemail is unreliable FHCRC (M/W): 206-667-7025 FAX=206-667-4812 | use Email CONFIDENTIALITY NOTICE: This e-mail message and any attachme...{{dropped}}

You might look at either ?try or ?tryCatch. An untested modification: my.function(x){ options(show.error.messages = FALSE) atmpt <- try(function.someone.else(x)) options(show.error.messages = TRUE) if(inherits(atmpt, "try-error")){ atmpt <- NA } } HTH, Jim James W. MacDonald Affymetrix and cDNA Microarray Core University of Michigan Cancer Center 1500 E. Medical Center Drive 7410 CCGC Ann Arbor MI 48109 734-647-5623 >>> "Kimpel, Mark W" <mkimpel@iupui.edu> 05/10/04 03:11PM >>> A function I am calling from within one of my functions occasionally returns an error (bug in the other function, not my fault). When this happens, I would like for the value of the function that is blowing up to be "NA". Instead, my whole function blows up. Is there a way I can do something like this? my.function(x) { if (is.error(function.someone.else(x))) {NA} else {function.someone.else(x)} } Unfortunately, R doesn't seem to provide for this "is.error" approach. Is there another answer? Thanks, Mark _______________________________________________ Bioconductor mailing list Bioconductor@stat.math.ethz.ch https://www.stat.math.ethz.ch/mailman/listinfo/bioconductor