Get data limiting function.

Get data limiting function to use in rglactions as 'trans_fun' to transform data. This is typically used to limit the colorbar in a plot to a certain range. This is similar to clip.data or clip_fun, but uses absolute values instead of percentiles to clip.

Usage

limit_fun(vmin, vmax)

Arguments

vmin

numerical scalar, the lower border. Data values below this will be set to vmin in the return value.

vmax

numerical scalar, the upper border. Data values above this will be set to vmax in the return value.

Value

a function that takes as argument the data, and clips it to the requested range. I.e., values outside the range will be set to the closest border value ('vmin' or 'vmax'). Designed to be used as rglactions$trans_fun in vis functions, to limit the colorbar and data range.

See also

rglactions

Examples

   rglactions = list("trans_fun"=limit_fun(2,3));