WlzHistogramSmooth

Name

WlzHistogramSmooth - Low-pass filters a Woolz histogram object.

Synopsis

WlzHistogramSmooth [-o<output object file>] [-a] [-h]
           [-s<smoothing>] [<input object file>]

Options

-a	output the histogram as ascii data not a Woolz histogram object.
-s	smoothing factor.
-o	Output object file name.
-h	Help - print help message
-v	Verbose operation

By default the input histogram object is read from the standard input and the output histogram data/object is written to the standard out- put.

The smoothing factor is the gaussian kernel half-height full-width in bins (default 1).

Description

Smooths a Woolz histogram object by convolving the histogram bins with a gaussian.

Output ascii data are written as a set of records one per line, with each record composed of two fields separated by white space characters:

  <grey value>   <histogram bin occupancy>

Examples

# An example which uses WlzHistogramSmooth and xgraph to plot a
# smoothed histogram.

WlzHistogramSmooth -a -s5 myHist.wlz | xgraph

File

WlzHistogramSmooth.c

See Also

WlzHistogramObj(1) WlzHistogramSmooth(3)