p.grid {wasim}R Documentation

Read and plot a grid-file output by WaSiM

Description

These two functions help to read and plot grid-files created by WaSiM. You need the gridasci-executable if to convert binary grid data to ascii grid data.

Usage

p.grid(grid, ...)
read.grid(file, record_size=4)

Arguments

grid A grid read with the read.grid function
... Additional arguments passed to plot
file WASIM grid output file in ASCII or binary format.
record_size number of bytes used to represent a float value in the binary grid. Usually 4, but may be platform-dependent.

Details

The file is opened as a binary grid unless the infile has one of the following extensions: *.asc, *.ascii, *.txt. Nodata values are represented by NAs.

Value

read.grid returns a list:

head dataframe of header information containing the fields ncols, nrows, xllcorner, yllcorner, cellsize, nodata_value.
tab The actual grid

Author(s)

Dominik Reusser, Till Francke

References

WaSiM-ETH manual

See Also

read.results, p.flow_comp for more WaSiM related function. filled.contour for plotting options

Examples

  sd.grid <- read.grid( file= system.file("weisseritz/sd__ww100.grd", package="wasim"))  # Datumsreihe heisst jetzt d.datum
  p.grid(sd.grid, 
        color.palette=topo.colors,
              zlim=c(-20,20),
        main="Saturation deficit at the Weisseritz")

[Package wasim version 1.0 Index]