RiverBlock: River Block-Chart
In rivervis: River Visualisation Tool

Description Usage Arguments Author(s) See Also Examples

This plots blocks to display qualitative data on the river chart.

RiverBlock(site, river, distance, value, riverlayout, arrangement,
  pt.shw = FALSE, hw.rat = 1.5, h.gap = 0.05, w.gap = 0.025,
  block.col = NA, block.lwd = 1, bd.col = "grey20", par.shw = TRUE,
  par.pos = 2, par.ofs = 1, par.cex = 0.6, par.adj = c(1, 0.5),
  par.txt = NA, lbl.shw = TRUE, lbl.cex = 0.7, lbl.adj = c(0.5, 2),
  lbl.ofs = 0.5, lbl.col = "black", lbl.srt = 0, lbl.pos = NULL)

`site`	a vector of site names.
`river`	a vector of rivers on which the sites are located.
`distance`	a vector. The along-the-river distances between the sites and the mouth of the river.
`value`	a data frame containing the qualitative variables to be shown on the block-chart.
`riverlayout`	the output list of RiverLayout or RiverMap.
`arrangement`	a vector indicating the block number for each line.
`pt.shw`	show location point (`TRUE`) or not (`FALSE`).
`hw.rat`	the ratio of block height and width in the plotted diagram.
`h.gap`	vertical gap size between blocks. By default, the vertical gap is river height * 0.05 in each river chart.
`w.gap`	horizontal gap size between blocks when there is more than one block in each line. By default, the horizontal gap is largest block width * 0.025.
`block.col`	block colour.
`block.lwd`	block line width.
`bd.col`	block border col.
`par.shw`	show parameter names (`TRUE`) or not (`FALSE`).
`par.pos`	parameter label position. `1` for below, `2` for left, `3` for above, and `4` for right. See `par` for details.
`par.ofs`	parameter label position offset.
`par.cex`	parameter label size.
`par.adj`	parameter label adjustment. One or two values in [0,1] for x and y (optional) adjustment.
`par.txt`	parameter name.
`lbl.shw`	show labels (`TRUE`) or not (`FALSE`).
`lbl.cex`	label size.
`lbl.adj`	label adjustment. One or two values in [0,1] for x and y (optional) adjustment.
`lbl.ofs`	label position offset.
`lbl.col`	label colour.
`lbl.srt`	label angle.
`lbl.pos`	label position. `1` for below, `2` for left, `3` for above, and `4` for right. See `par` for details.

Feng Mao

RiverLayout, RiverDraw, RiverMap, par.

data(Ballinderry)

riverlayout <- RiverLayout(B.river$River,B.river$Length,
                           B.river$Parent,B.river$Position,
                           B.river$Distance, direction = -1)
RiverDraw(riverlayout)

RiverBlock(B.sitehm$Site, B.sitehm$River, B.sitehm$Distance,
           B.sitehm[4:9], riverlayout, c(1,1,2,2),
           block.col = fivecolours, lbl.adj = c(0.5,1.3))

RiverDraw(riverlayout)

RiverBlock(B.sitehm$Site, B.sitehm$River, B.sitehm$Distance,
           B.sitehm[4:9], riverlayout, c(1,1,2,2),
           block.col = fivecolours, lbl.adj = c(0.5,1.3),
           par.txt = c("ChanVeg", "ChanFlow", "BankVegLeft",
                       "Right", "RipLULeft", "Right"))