search for: aherr

List, I am trying to extract summary statistics from a data frame with several variables (and NAs) into a dataframe with the columns: Variablename (ie the colnames of original data), mean, stdev, max, min, Valid N, Missing Values. Extracting the statistics is straightforward using stack and aggregate. However, I haven''t succeeded in obtaining the number of Missing Values. I can extract

...pch=19), text=list(leg.txt), ) ) -------------------------------------------- Alexander Herr - Herry Northern Futures Davies Laboratory PMB, Aitkenvale, QLD 4814 Phone (07) 4753 8510 Fax (07) 4753 8650 Home: http://batcall.csu.edu.au/~aherr Webadmin ABS: http://ausbats.org.au Sustainable Ecosystems: http://www.cse.csiro.au/ -------------------------------------------- [[alternative HTML version deleted]]