Hi,
I am apparently not understanding some nuance about either the use
of subset or more likely my ability to test for a numerical match
using '='. Which is it? Thanks in advance.
I've read a data file, reshaped it and then created MyResults by
keeping only lines where the value column is
Try this:
MyResults.GroupA - subset(MyResults, PosType == 1)
On Tue, Jul 7, 2009 at 4:06 PM, Mark Knecht markkne...@gmail.com wrote:
Hi,
I am apparently not understanding some nuance about either the use
of subset or more likely my ability to test for a numerical match
using '='. Which
Hi Mark,
X = 1
assings the number 1 to X whereas
X == 1
test if X is equal to 1. I suspect you want to do this :-) Here is an
example:
# R code
X = 1
X
# [1] 1
X == 1
# [1] TRUE
HTH,
Jorge
On Tue, Jul 7, 2009 at 3:06 PM, Mark Knecht markkne...@gmail.com wrote:
Hi,
I am apparently
On 7/7/2009 3:06 PM, Mark Knecht wrote:
Hi,
I am apparently not understanding some nuance about either the use
of subset or more likely my ability to test for a numerical match
using '='. Which is it? Thanks in advance.
I've read a data file, reshaped it and then created MyResults by
On 07-Jul-09 19:06:59, Mark Knecht wrote:
Hi,
I am apparently not understanding some nuance about either the use
of subset or more likely my ability to test for a numerical match
using '='. Which is it? Thanks in advance.
It looks as though you have tripped over the distinction between =
On Tue, Jul 7, 2009 at 12:17 PM, Henrique Dallazuannawww...@gmail.com wrote:
Try this:
MyResults.GroupA - subset(MyResults, PosType == 1)
SNIP
Darn those small screen fonts. I never noticed that! Every example I'm
looking at jsut looks like a single '=' until you pointed it out!
Thanks to
subset(), like many R methods, has an argument list that
ends with '...', meaning that it will not tell you that an argument
you gave it by name= is not in the official list of arument names.
If the ... were not there then you would have gotten an error
message. E.g., the following makes a
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