The line to draw for an activity, at full resolution: its fixes in order
(samples with no fix left out), except an open water swim's, whose raw
fixes zigzag; that one gets the cleaned line the summary draws with. Empty
for an activity with no GPS.
The points don't line up with samples by index: a normal track skips
samples with no fix, while an open water swim's cleaned line has a point
for every sample (its gaps are filled in).
The line to draw for an activity, at full resolution: its fixes in order (samples with no fix left out), except an open water swim's, whose raw fixes zigzag; that one gets the cleaned line the summary draws with. Empty for an activity with no GPS.
The points don't line up with samples by index: a normal track skips samples with no fix, while an open water swim's cleaned line has a point for every sample (its gaps are filled in).