I'm trying to plot background intensity after clean empty values. When I
check the information through layout, I got ngrid.r=12, ngrid.c=4,
nspot.r=25, nspot.c=24 (28800 spots)
Cleaning empty data I have 27003 spots., searching in forum I found this
suggestion:

Dear Vanessa,
>
> limma always assumes complete print-tip-groups, so the only way to
> use imageplot() correctly is to complete your arrays by putting back
>
> to last 4 spots of each print-tip-group as NA. You can do this by:
>
>    narrays <- ncol(RG_e1)
>    Y <- matrix(NA,21632,narrays)
>    RG <- new("RGList",list(R=Y,G=Y,Rb=Y,Gb=Y)
>    RG$printer <- RG_e1$printer
>
>    missingspots <- spotr(RG$printer)==26 & spotc(RG$printer)>=23
>    RG$R[!i,] <- RG_e1$R
>    RG$Rb[!i,] <- RG_e1$Rb
>    RG$G[!i,] <- RG_e1$G
>    RG$Gb[!i,] <- RG_e1$Gb
>
> Best wishes
>
> Gordon
>
> but If i try to follow the commands I have this error message:

missingspots <- spotr(RG1$printer)==26 & spotc(RG1$printer)>=23
Error en 1:layout$nspot.r : Argumento NA/NaN
Can anyone suggest me something?
Thanks

-- 
José Antonio Coria Fernández
Universidad Nacional Autonóma de México
Facultad de Estudios Superiores Acatlán
Centro de Desarrollo Tecnológico
(Departamento Servicios de Cómputo)
Av. Alcanfores y San Juan Totoltepec S/N
C.P. 53150  Tel: 56 23 17 62, 56 23 15 07
Cubiculo 114 Planta Alta
email: com90185@gmail.com,
         jcoriafdz@hotmail.com

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