Helper functions

Utility functions for PlotZ

class plotz.utils.Markers

Built-in marker filters

static always(*args, **kw)

Marker filter that displays a marker for each data point

static equallySpaced(*args, **kw)

Marker filter that displays markers equally spaced (with respect to the x coordinate)

Parameters:

• dX (float) – period of the markers. One marker gets displayed each time x advances by at least dX.
• start (float) – abscissa of the first displayed marker.

static oneInN(*args, **kw)

Marker filter that displays a marker for one data point in N

Parameters:

• N (int) – period of the markers. One data points in N gets a marker.
• start (int) – index of the first data point to have a marker.

plotz.utils.nth(iterable, n, default=None)

Returns the nth item or a default value

plotz.utils.ppfloat(x, fmt='%f')

Return a pretty string representing the given float. All useless trailing zeros are removed.