need help
Hi, there:
here is some part from my previous email:
[,1] [,2] [,3] [,4] [,5]
[1,] 34.216166 96.928587 330.125990 330.183222 330.201215
[2,] 2.819183 8.134491 8.275841 8.525256 8.828448
[3,] 2.819183 7.541680 7.550333 8.374636 8.690998
[4,] 4.672551 5.036353 5.072710 5.152218 5.223204
[5,] 5.470131 5.500513 5.674139 5.689151 5.770423
[6,] 4.480287 4.628300 4.797686 4.814106 4.823345
I want to filter out the first 3 cases from the rest and the criteria
is I am looking for a "gap".
My way is using std(eachrow)/median(each) and set up a threshold,
which is very naive, but fast and good enough. But I want it better
and more "academic". Please be advised. I think clustering might help,
but it needs to be quick since t2 has 30000 rows.
Thanks,
On 8/12/05, Daniel Nordlund <res90sx5 at verizon.net> wrote:
-----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Weiwei Shi Sent: Friday, August 12, 2005 2:05 PM To: r-help Subject: [R] need help Hi, there: I think i need to re-phrase my question since last time I did not get any reply but i think the question is not that hard, probably i did not make the question clear: I want to find cases like 35, 90, 330, 330, 335 from the rest which look like 3, 3, 3, 3.2, 3.3 4, 4.4, 4.5, 4.6, 4.7 .... basically there is one (or more) big 'gap' in the case i seek. thanks, weiwei -- Weiwei Shi, Ph.D
Weiwei, You will have to specify what you mean by a big gap before anyone can help. And I still don't understand what your data look like. Is 35, 90, 330, 330, 335 supposed to represent a sequence or a row of a matrix (or data frame)? Dan Nordlund Bothell, WA
Weiwei Shi, Ph.D "Did you always know?" "No, I did not. But I believed..." ---Matrix III