mva.pairs                package:affy                R Documentation

_M _v_s. _A _M_a_t_r_i_x

_D_e_s_c_r_i_p_t_i_o_n:

     A matrix of M vs. A plots is produced. Plots are made on the upper
     triangle and the variance of the Ms are displayed in the lower
     triangle

_U_s_a_g_e:

     mva.pairs(x, labels=colnames(x), log.it=TRUE,span=2/3,family.loess="gaussian",
               digits=3,line.col=2,main="MVA plot",...)

_A_r_g_u_m_e_n_t_s:

       x: A matrix containing the chip data in the columns.

  labels: the names of the variables.

  log.it: logical. If 'TRUE' uses log scale.

    span: span to be used for loess fit.

family.loess: '"guassian"' or '"symmetric"' as in 'loess'.

  digits: number of digits to use in the display of variance.

line.col: color of the loess line.

    main: an overall title for the plot.

     ...: graphical parameters can be given as arguments to 'mva.plot'

_S_e_e _A_l_s_o:

     'pairs'

_E_x_a_m_p_l_e_s:

         
         x <- matrix(rnorm(4000),1000,4)
         x[,1] <- x[,1]^2
         dimnames(x) <- list(NULL,c("chip 1","chip 2","chip 3","chip 4"))
         mva.pairs(x,log=FALSE,main="example")

