Displaying 2 results from an estimated 2 matches for "analysis_soil".
2010 Feb 01
1
Comparing Variables and Writing a New Column
HI,
I am using Windows XP and R version 2.9.2. I have a data frame written by R
similar to the following:
Lab_ID Analysis_Soil Results -4MAD -2.5MAD
+2.5MAD +4MAD
55003 Calcium-2008-116 900 961 1121.5
1656.5 1817
55003 Calcium-2008-117 3321 2175 2380.5
3065.5 3271
55003 Calcium-2008-118 3342...
2010 Jan 21
2
Help with subset
...s for
each soil sample, and for each type of analysis. ##
napt <- read.table(file = "C:/Documents and Settings/jfloren/My
Documents/R_Statistics/NAPT/NAPT_09/CertIn2010/Data_for_R/readin_all_for_2010_cert.csv
", header = TRUE, sep = ",")
attach(napt)
x116 <- subset(napt, Analysis_Soil %in% c("Bases-K Ammonium
Acetate-2008-116"))
detach(napt)
attach(x116)
#### End of merge document section for selecting the subset ###
Once I get the subset isolated, I have no problems calculating the necessary
statistics and can generate some wonderful graphs.
I have two questions...