Dear R-enthusiasts,
What a wonderful package R is, many thanks to all you have contributed
(I've just started using it)...I have a few questions that I am having
some trouble finding the answer to:
I am using RPgSQL to grab some data from a postgresql database (about 179
columns and a few thousand rows), and I want to do a lot of pairwise
comparison of the rows...(this is yeast genomic microarray data for those
who care)
I get to the database:
(the first 3 entries are text)
and now I just want to see a plot(a,b) but I always get the following
error:
Error in plot.new() : Figure margins too large
(I even tried par(mar=c(0,0,0,0)))
Oddly I get the following behaviour:
plot(seq(1,174),a)
works (the graph looks like it should)
but the reverse
plot(a,seq(1,174))
gives me:
Error in plot.new() : Figure margins too large
similarly for b...so I am guessing the problem is passing my lists as the
first argument...
Manually getting the rows and making a text file that explictly states the
vectors and then sourcing the file from R does plot(a,b) just fine....
If I understand the R classes correctly t is a dataframe and a and b are
lists (named by the column headings of the database)....
I'm sure there is something stupid I am doing....
Also I am little confused as to the meaning of t[0,] when I get the
data.frame back from my SQL query, if anyone happens to have any insight.
Many thanks,
Maneesh (please email to this address as I am not subscribed to the list)
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