panel.levelplot           package:lattice           R Documentation

_D_e_f_a_u_l_t _P_a_n_e_l _F_u_n_c_t_i_o_n _f_o_r _l_e_v_e_l_p_l_o_t

_D_e_s_c_r_i_p_t_i_o_n:

     This is the default panel function for 'levelplot'.

_U_s_a_g_e:

     panel.levelplot(x, y, z, 
                     subscripts,
                     at = pretty(z),
                     shrink,
                     labels,
                     label.style = c("mixed", "flat", "align"),
                     contour = FALSE,
                     region = TRUE,
                     col = add.line$col,
                     lty = add.line$lty,
                     lwd = add.line$lwd,
                     ...,
                     col.regions = regions$col,
                     alpha.regions = regions$alpha)
     panel.contourplot(...)

_A_r_g_u_m_e_n_t_s:

 x, y, z: Variables defining the plot. 

subscripts: Integer vector indicating what subset of 'x', 'y' and 'z'
          to draw. 

      at: Numeric vector giving breakpoints along the range of 'z'. 
          See 'levelplot' for details. 

  shrink: Either a numeric vector of length 2 (meant to work as both x
          and y components), or a list with components x and y which
          are numeric vectors of length 2.  This allows the rectangles
          to be scaled proportional to the z-value. The specification
          can be made separately for widths (x) and heights (y).  The
          elements of the length 2 numeric vector gives the minimum and
          maximum proportion of shrinkage (corresponding to min and max
          of z). 

  labels: Either a logical scalar indicating whether the labels are to
          be drawn, or a character or expression vector giving the
          labels associated with the 'at' values.  Alternatively,
          'labels' can be a list with the following components:



          '_l_a_b_e_l_s': a character or expression vector giving the labels.
                This can be omitted, in which case the defaults will be
               used. 

          '_c_o_l, _c_e_x, _a_l_p_h_a': graphical parameters for label texts 

          '_f_o_n_t_f_a_m_i_l_y, _f_o_n_t_f_a_c_e, _f_o_n_t': font used for the labels 


label.style: Controls how label positions and rotation are determined. 
          A value of '"flat"' causes the label to be positioned where
          the contour is flattest, and the label is not rotated.  A
          value of '"align"' causes the label to be drawn as far from
          the boundaries as possible, and the label is rotated to align
          with the contour at that point.  The default is to mix these
          approaches, preferring the flattest location unless it is too
          close to the boundaries. 

 contour: A logical flag, specifying whether contour lines should be
          drawn. 

  region: A logical flag, specifying whether inter-contour regions
          should be filled with the appropriate color. 

col, lty, lwd: graphical parameters for contour lines

     ...: Extra parameters. 

col.regions: A vector of colors, or a function to produce a vecor of
          colors, to be used if 'region=TRUE'.  Each interval defined
          by 'at' is assigned a color, so the number of colors actually
          used is one less than the length of 'at'.  See 'level.colors'
          for details on how the color assignment is done. 

alpha.regions: numeric scalar controlling transparency of facets 

_D_e_t_a_i_l_s:

     The same panel function is used for both 'levelplot' and
     'contourplot' (which differ only in default values of some
     arguments). 'panel.contourplot' is a simple wrapper to
     'panel.levelplot'.

     When 'contour=TRUE', the 'contourLines' function is used to
     calculate the contour lines.

_A_u_t_h_o_r(_s):

     Deepayan Sarkar Deepayan.Sarkar@R-project.org

_S_e_e _A_l_s_o:

     'levelplot', 'level.colors', 'contourLines'

