search for: roop

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2018 Mar 21
3
Mean of a row of a data frame
I am trying to get the mean of a row of a data frame. My code follows: roop <- data.frame(x=c(1,2,3),y=c(4,5,2),z=c(0,9,4)) roop mean(roop[1,]) mean(roop[1,c("x","y","z")]) I get the following output: > roop x y z 1 1 4 0 2 2 5 9 3 3 2 4 > mean(roop[1,]) [1] NA Warning message: In mean.default(roop[1, ]) : argument is not numer...
2018 Mar 21
0
Mean of a row of a data frame
R > rowMeans(roop) [1] 1.666667 5.333333 3.000000 R > mean(as.numeric(roop[1,])) [1] 1.666667 :-) > On Mar 20, 2018, at 10:18 PM, Sorkin, John <jsorkin at som.umaryland.edu> wrote: > > I am trying to get the mean of a row of a data frame. My code follows: > > > roop <- data.fra...
2006 Apr 13
3
QueryParser doesn''t use StandardAnalyzer correctly?
...#39;'contents'', :analyzer => Ferret::Analysis::StandardAnalyzer.new, :occur_default => Ferret::Search::BooleanClause::Occur::MUST) q1 = parser.parse(''museum art'') q2 = parser.parse(''museum of art'') puts q1, q2 Thanks for any insight. -Roop -- Posted via http://www.ruby-forum.com/.
2006 Apr 11
2
setting the default operator on a QueryParser
...ault OR. In Java I would simply do: QueryParser parser = new QueryParser("contents", new StandardAnalyzer()); parser.setDefaultOperator(QueryParser.Operator.AND); But I can''t find the corresponding method in the Ferret API. Have I missed it or is there a workaround? Thanks, Roop -- Posted via http://www.ruby-forum.com/.