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Apologies if this has been asked before. I am having trouble understanding the R mailing list never mind R! I am relatively new to R having migrated from Minitab and SPSS. I have managed to do some more complicated statistics such as hierarchical partitioning of variance on an 80,000 record dataset but have to admit that drawing a simple bar plot I could do by hand is proving extremely

Hi, I am having trouble with a large dataset I am importing from SPSS. The problem is I have to merge two datasets (which seems to be working OK) then select rows based on attributes. I have a column with either blank cells, B or E entered. I want to select all rows with E. I have other columns with numerical data which I will then do analyses on. data[column==" E"] does not

I have switched to R having lost use of SPSS. Unfortunately all my data was given to me by collaborators in SPSS files and the datasets are too big to put into excel and manipulate (100,000 records). I am managing to import my data into R from SPSS with foreign, with no problems. I can do a hierarchical partitioning of variance analysis on the data and do basic stuff like calculate means.

I am trying to draw a bar chart with standard error bars for two groups. I was struggling in R so have now managed to get rcmdr up and running on my mac (although the help frequently crashes, everything else seems fine, if a bit sluggish; wouldn't use it for stats). This has allowed me to very easily create a plot of the means and standard errors BUT-does anyone know if it is