Hi,
Have you tried using RGBA to set transparent colors to avoid hiding the gridlines?
I did a small example based on our Scatter and Polygon combination demo and seems to work:
chart with multiple backgrounds
[code]
Height vs Weight
Polygon series
Height (cm)
Weight (kg)
[165,75]
, [185,75]
, [185,110]
, [165, 110]
[145,75]
, [165,75]
, [165, 110]
, [145, 110]
[165,30]
, [185,30]
, [185,75]
, [165, 75]
[145,30]
, [165,30]
, [165, 75]
, [145, 75]
[161.2, 51.6]
, [167.5, 59.0]
, [159.5, 49.2]
, [157.0, 63.0]
, [155.8, 53.6]
,
[170.0, 59.0]
, [159.1, 47.6]
, [166.0, 69.8]
, [176.2, 66.8]
, [160.2, 75.2]
,
[172.5, 55.2]
, [170.9, 54.2]
, [172.9, 62.5]
, [153.4, 42.0]
, [160.0, 50.0]
,
[147.2, 49.8]
, [168.2, 49.2]
, [175.0, 73.2]
, [157.0, 47.8]
, [167.6, 68.8]
,
[159.5, 50.6]
, [175.0, 82.5]
, [166.8, 57.2]
, [176.5, 87.8]
, [170.2, 72.8]
,
[174.0, 54.5]
, [173.0, 59.8]
, [179.9, 67.3]
, [170.5, 67.8]
, [160.0, 47.0]
,
[154.4, 46.2]
, [162.0, 55.0]
, [176.5, 83.0]
, [160.0, 54.4]
, [152.0, 45.8]
,
[162.1, 53.6]
, [170.0, 73.2]
, [160.2, 52.1]
, [161.3, 67.9]
, [166.4, 56.6]
,
[168.9, 62.3]
, [163.8, 58.5]
, [167.6, 54.5]
, [160.0, 50.2]
, [161.3, 60.3]
,
[167.6, 58.3]
, [165.1, 56.2]
, [160.0, 50.2]
, [170.0, 72.9]
, [157.5, 59.8]
,
[167.6, 61.0]
, [160.7, 69.1]
, [163.2, 55.9]
, [152.4, 46.5]
, [157.5, 54.3]
,
[168.3, 54.8]
, [180.3, 60.7]
, [165.5, 60.0]
, [165.0, 62.0]
, [164.5, 60.3]
,
[156.0, 52.7]
, [160.0, 74.3]
, [163.0, 62.0]
, [165.7, 73.1]
, [161.0, 80.0]
,
[162.0, 54.7]
, [166.0, 53.2]
, [174.0, 75.7]
, [172.7, 61.1]
, [167.6, 55.7]
,
[151.1, 48.7]
, [164.5, 52.3]
, [163.5, 50.0]
, [152.0, 59.3]
, [169.0, 62.5]
,
[164.0, 55.7]
, [161.2, 54.8]
, [155.0, 45.9]
, [170.0, 70.6]
, [176.2, 67.2]
,
[170.0, 69.4]
, [162.5, 58.2]
, [170.3, 64.8]
, [164.1, 71.6]
, [169.5, 52.8]
,
[163.2, 59.8]
, [154.5, 49.0]
, [159.8, 50.0]
, [173.2, 69.2]
, [170.0, 55.9]
,
[161.4, 63.4]
, [169.0, 58.2]
, [166.2, 58.6]
, [159.4, 45.7]
, [162.5, 52.2]
,
[159.0, 48.6]
, [162.8, 57.8]
, [159.0, 55.6]
, [179.8, 66.8]
, [162.9, 59.4]
,
[161.0, 53.6]
, [151.1, 73.2]
, [168.2, 53.4]
, [168.9, 69.0]
, [173.2, 58.4]
,
[171.8, 56.2]
, [178.0, 70.6]
, [164.3, 59.8]
, [163.0, 72.0]
, [168.5, 65.2]
,
[166.8, 56.6]
, [172.7, 105.2]
, [163.5, 51.8]
, [169.4, 63.4]
, [167.8, 59.0]
,
[159.5, 47.6]
, [167.6, 63.0]
, [161.2, 55.2]
, [160.0, 45.0]
, [163.2, 54.0]
,
[162.2, 50.2]
, [161.3, 60.2]
, [149.5, 44.8]
, [157.5, 58.8]
, [163.2, 56.4]
,
[172.7, 62.0]
, [155.0, 49.2]
, [156.5, 67.2]
, [164.0, 53.8]
, [160.9, 54.4]
,
[162.8, 58.0]
, [167.0, 59.8]
, [160.0, 54.8]
, [160.0, 43.2]
, [168.9, 60.5]
,
[158.2, 46.4]
, [156.0, 64.4]
, [160.0, 48.8]
, [167.1, 62.2]
, [158.0, 55.5]
,
[167.6, 57.8]
, [156.0, 54.6]
, [162.1, 59.2]
, [173.4, 52.7]
, [159.8, 53.2]
,
[170.5, 64.5]
, [159.2, 51.8]
, [157.5, 56.0]
, [161.3, 63.6]
, [162.6, 63.2]
,
[160.0, 59.5]
, [168.9, 56.8]
, [165.1, 64.1]
, [162.6, 50.0]
, [165.1, 72.3]
,
[166.4, 55.0]
, [160.0, 55.9]
, [152.4, 60.4]
, [170.2, 69.1]
, [162.6, 84.5]
,
[170.2, 55.9]
, [158.8, 55.5]
, [172.7, 69.5]
, [167.6, 76.4]
, [162.6, 61.4]
,
[167.6, 65.9]
, [156.2, 58.6]
, [175.2, 66.8]
, [172.1, 56.6]
, [162.6, 58.6]
,
[160.0, 55.9]
, [165.1, 59.1]
, [182.9, 81.8]
, [166.4, 70.7]
, [165.1, 56.8]
,
[177.8, 60.0]
, [165.1, 58.2]
, [175.3, 72.7]
, [154.9, 54.1]
, [158.8, 49.1]
,
[172.7, 75.9]
, [168.9, 55.0]
, [161.3, 57.3]
, [167.6, 55.0]
, [165.1, 65.5]
,
[175.3, 65.5]
, [157.5, 48.6]
, [163.8, 58.6]
, [167.6, 63.6]
, [165.1, 55.2]
,
[165.1, 62.7]
, [168.9, 56.6]
, [162.6, 53.9]
, [164.5, 63.2]
, [176.5, 73.6]
,
[168.9, 62.0]
, [175.3, 63.6]
, [159.4, 53.2]
, [160.0, 53.4]
, [170.2, 55.0]
,
[162.6, 70.5]
, [167.6, 54.5]
, [162.6, 54.5]
, [160.7, 55.9]
, [160.0, 59.0]
,
[157.5, 63.6]
, [162.6, 54.5]
, [152.4, 47.3]
, [170.2, 67.7]
, [165.1, 80.9]
,
[172.7, 70.5]
, [165.1, 60.9]
, [170.2, 63.6]
, [170.2, 54.5]
, [170.2, 59.1]
,
[161.3, 70.5]
, [167.6, 52.7]
, [167.6, 62.7]
, [165.1, 86.3]
, [162.6, 66.4]
,
[152.4, 67.3]
, [168.9, 63.0]
, [170.2, 73.6]
, [175.2, 62.3]
, [175.2, 57.7]
,
[160.0, 55.4]
, [165.1, 104.1]
, [174.0, 55.5]
, [170.2, 77.3]
, [160.0, 80.5]
,
[167.6, 64.5]
, [167.6, 72.3]
, [167.6, 61.4]
, [154.9, 58.2]
, [162.6, 81.8]
,
[175.3, 63.6]
, [171.4, 53.4]
, [157.5, 54.5]
, [165.1, 53.6]
, [160.0, 60.0]
,
[174.0, 73.6]
, [162.6, 61.4]
, [174.0, 55.5]
, [162.6, 63.6]
, [161.3, 60.9]
,
[156.2, 60.0]
, [149.9, 46.8]
, [169.5, 57.3]
, [160.0, 64.1]
, [175.3, 63.6]
,
[169.5, 67.3]
, [160.0, 75.5]
, [172.7, 68.2]
, [162.6, 61.4]
, [157.5, 76.8]
,
[176.5, 71.8]
, [164.4, 55.5]
, [160.7, 48.6]
, [174.0, 66.4]
, [163.8, 67.3]
</data>
</data-series>
[/code]Axes need to have extremes set to be able to cover the full plot area with the polygons.
I also disabled marker hover and show in legend for polymer series.
Hope this helps!