search for: day_1

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2006 Jan 12
1
wilcox.test warnig message p-value where are the zeros in the data?
does anybody know why there are the two warnings in the example above? Regards Knut > day_4 [1] 540 1 1 1 1 1 1 300 720 480 > day_1 [1] 438 343 1 475 1 562 500 435 1045 890 > is.vector (day_1) [1] TRUE > is.vector (day_4) [1] TRUE > wilcox.test(day_4 ,day_1,paired=TRUE,alternative="two.sided",exact=TRUE,conf.int=TRUE) Wilcoxon signed rank test with continuity correction data: day...
2009 Nov 12
1
How to select the part of column name heads?
  Dear R helpers,   Suppose I am reading a csv file as   yd    =   read.csv("mydata.csv")   The actual data in the mydata.csv file is say for example like this -     Date             day_1     days_15     day_30    days_60    days_90      days_180 Nov 11            5             14               1               3              21               8 Nov 10            7              1                3              11              5                14                   Nov 09            2  ...
2011 Aug 12
1
sapply to bind columns, with repeat?
...t;numval", paste(rep.name, rep.count, sep="_")) I would like to generate output that contains in one row, the columns "id", "elem", "unt", "year", "mo", and "numval". Binded to these initial columns, I would like only "day_1", "hr_1", "met_1", "dat_1", "fl1_1", and "fl2_1". Then, in the next row I would like repeated the initial columns "id", "elem", "unt", "year", "mo", and "numval" and then binded "...