Dear group, I have a matrix with (190,20000) dimensions. The values range from : -973.8149 to 807.4688 I want to select the values less than -200 and want to know what are the names of row and columns. m1 m2 m3 m4 ...... mn k1 k2 k3 k4 . . . kj>mymat[1:4,1:4]1-Dec 1-Mar 1-Sep 10-Sep m1 -0.4220701 -0.94359666 -421.06729 -1.8525286 m2 0.4408303 -250.706960 0.6422206 0.6344322 m3 0.4005077 -430.076784 1.3653584 0.4677905 m4 5.0358915 6.40544709 -430.67964 3.2017410 I want to select the pairs: m2 1-Mar -250.706960 m3 1-Mar -430.076784 m1 1-Sep -421.06729 m4 1-Sep -430.67964 How can I do it. Could any one help me out. Please. Thanks sri
Gabor Grothendieck
2006-Jun-27 19:03 UTC
[R] Reading a set of values from a numeric matrix
See: http://thread.gmane.org/gmane.comp.lang.r.general/64473/focus=64487 On 6/27/06, Srinivas Iyyer <srini_iyyer_bio at yahoo.com> wrote:> Dear group, > I have a matrix with (190,20000) dimensions. > > The values range from : -973.8149 to 807.4688 > > I want to select the values less than -200 and want to > know what are the names of row and columns. > > m1 m2 m3 m4 ...... mn > k1 > k2 > k3 > k4 > . > . > . > kj > > > > >mymat[1:4,1:4] > > 1-Dec 1-Mar 1-Sep 10-Sep > m1 -0.4220701 -0.94359666 -421.06729 -1.8525286 > m2 0.4408303 -250.706960 0.6422206 0.6344322 > m3 0.4005077 -430.076784 1.3653584 0.4677905 > m4 5.0358915 6.40544709 -430.67964 3.2017410 > > > I want to select the pairs: > > m2 1-Mar -250.706960 > m3 1-Mar -430.076784 > m1 1-Sep -421.06729 > m4 1-Sep -430.67964 > > > How can I do it. Could any one help me out. Please. > > Thanks > sri > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html >