3 messages · Vincent Goulet, Patrick Burns, robin hankin
Is there a canonical way to check if all elements of a vector or matrix are the same? Solutions below work, but look hackish to me.
x <- rep(1, 10) all(x == x[1]) # == operator does not provide for small differences
[1] TRUE
isTRUE(all.equal(x, rep(x[1], length(x)))) # ugly
[1] TRUE Best, Vincent
Vincent Goulet, Associate Professor ??cole d'actuariat Universit?? Laval, Qu??bec Vincent.Goulet at act.ulaval.ca http://vgoulet.act.ulaval.ca
How about diff(range(x)) < tolerance Patrick Burns patrick at burns-stat.com +44 (0)20 8525 0696 http://www.burns-stat.com (home of S Poetry and "A Guide for the Unwilling S User")
Is there a canonical way to check if all elements of a vector or matrix are the same? Solutions below work, but look hackish to me.
x <- rep(1, 10) all(x == x[1]) # == operator does not provide for small differences
[1] TRUE
isTRUE(all.equal(x, rep(x[1], length(x)))) # ugly
[1] TRUE Best, Vincent
Hi library(magic) ?minmax [ the basic idea is min(x) == max(x) ] best wishes Robin
Is there a canonical way to check if all elements of a vector or matrix are the same? Solutions below work, but look hackish to me.
x <- rep(1, 10) all(x == x[1]) # == operator does not provide for small differences
[1] TRUE
isTRUE(all.equal(x, rep(x[1], length(x)))) # ugly
[1] TRUE Best, Vincent -- Vincent Goulet, Associate Professor ??cole d'actuariat Universit?? Laval, Qu??bec Vincent.Goulet at act.ulaval.ca http://vgoulet.act.ulaval.ca
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-- Robin Hankin Uncertainty Analyst National Oceanography Centre, Southampton European Way, Southampton SO14 3ZH, UK tel 023-8059-7743