
PLOT
AXISLABELS,
SWATH,
RGB(255,64,64) SWATH,
RGB(255,96,96) SWATH,
RGB(55,128,128) SWATH,
RGB(55,160,160) SWATH,
RGB(255,192,192) SWATH,
RGB(255,224,224) SWATH
Use SWATH to paint color between two series. SWATHes can be mixed and matched with other series types like LINE, BAR, and AREA.
The first swath you specify determines a baseline. Each swath after the first paints a band of color. Another example:

PLOT
AXISLABELS, SWATH, LIGHT RED SWATH,
LIGHT GREEN SWATH, LIGHT BLUE SWATH
SELECT
year, jan, jan*4, jan *5, jan*6
FROM CPI
WHERE year < 2007;
Use a completely transparent swath, when you need to start a new baseline:

PLOT
AXISLABELS,
SWATH,
LIGHT RED SWATH,
RGBA(255,255,255,0) SWATH,
LIGHT BLUE SWATH
WITH
SOLID THICK GRIDLINES
SELECT
year, jan, jan*4 , jan*5,
jan*6
FROM CPI
WHERE year < 2007;
More examples (click an image to see the script that made it):


