[R] Subtracting a matrix 1x28 from a scalar

John Kane jrkrideau at inbox.com
Mon May 7 21:40:39 CEST 2012


I'm sorry but where is 28 coming from?  It looks to me like you have a vector of length 34 and the result is of length 34.  Oh, I see, the 28 and 29 are the indices for the first number on the line not the total length.


John Kane
Kingston ON Canada


> -----Original Message-----
> From: mmballar at mtu.edu
> Sent: Mon, 7 May 2012 12:26:15 -0700 (PDT)
> To: r-help at r-project.org
> Subject: [R] Subtracting a matrix 1x28 from a scalar
> 
> Afternoon-
>   I am trying to subtract a matrix, basically a vector of 28 values, each
> by
> the same number to account for differences in regression fitting. I am
> taking the 1x28 and minus it by the mean value of the matrix, each
> number.
> The result I receive is a 1X29 matrix. Does anyone know why the result
> has
> an extra value?
> 
>> lffeb_march
>  [1] 6.588926 7.663877 6.917706 6.824374 7.029973 6.549651 6.517671
> 6.070738
> 5.916202
> [10] 6.993933 6.091310 7.313220 5.135798 6.762730 6.381816 7.999679
> 6.851185
> 5.799093
> [19] 7.774856 6.956545 8.218787 8.218787 7.549609 7.222566 7.170120
> 6.173786
> 5.075174
> [28] 4.700480 6.672033 5.198497 4.867534 7.170120 6.131226 6.802395
>> meanf_fm<-mean(lffeb_march)
>> X3_fm<-(lffeb_march-meanf_fm)
>> X3_fm
>  [1] -0.03784990  1.03710088  0.29092923  0.19759729  0.40319653
> -0.07712564
> -0.10910511
>  [8] -0.55603865 -0.71057432  0.36715660 -0.53546650  0.68644401
> -1.49097794
> 0.13595313
> [15] -0.24496036  1.37290220  0.22440855 -0.82768372  1.14807939
> 0.32976906
> 1.59201078
> [22]  1.59201078  0.92283279  0.59578964  0.54334317 -0.45299027
> -1.55160256
> -1.92629601
> [29]  0.04525657 -1.42827935 -1.75924193  0.54334317 -0.49554989
> 0.17561839
> 
> Thanks for the help
> Meredith
> 
> --
> View this message in context:
> http://r.789695.n4.nabble.com/Subtracting-a-matrix-1x28-from-a-scalar-tp4615590.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

____________________________________________________________
FREE 3D MARINE AQUARIUM SCREENSAVER - Watch dolphins, sharks & orcas on your desktop!



More information about the R-help mailing list