Description Usage Arguments Details
Image plot with twilight points and ribbons
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tagdata |
a dataframe with columns |
twilights |
dataframe of twilight times as generated by
|
offset |
the starting hour for the vertical axes. |
xlim |
the range of dates to plot. |
mark |
twilights to mark with a cross |
points.col |
colours of twilight points |
ribbon.col |
colours of twilight ribbons |
zlim |
the range of light levels to plot. |
point.cex |
expansion factor for plot points. |
Draws a light image with twilight points or twilight ribbon. If
tagdata is NULL
, no image is drawn. Twilight points and
ribbons are only drawn when twilight data is provided and the
point or ribbon colour specifications are non NULL
.
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