VAM

##
## Plotting velocità ascensionale media (VAM)
##

import pandas as pd
import plotly.express as px
import tempfile
import pathlib


def nonNegative(x):
	if x < 0:
		x = 0
	return x

def cycling_vam(s):
	diff = s.diff(30).apply(nonNegative)
	VAM = round(diff*60/0.5,0)
	return(VAM)


alts = pd.Series(np.asarray(GC.series(GC.SERIES_ALT)))
secs = pd.Series(np.asarray(GC.series(GC.SERIES_SECS)))
df = pd.concat([secs,VAMS],axis=1)

VAMS = cycling_vam(alts)

fig = px.line(df, 
	y=VAMS, x=secs,
        	line_shape="spline", 
	render_mode="svg",
	title="velocità ascensionale media")


# Show in GoldenCheetah
tmp = tempfile.NamedTemporaryFile(mode="w+t", prefix="GC_", suffix=".html", delete=False)
plotly.offline.plot(fig, auto_open = False, filename=tmp.name)
GC.webpage(pathlib.Path(tmp.name).as_uri())