Hi All ,
I am creating a radar chart and need it to have an image in the area of the
chart, replacing a solid fill.
Looking at the Radar chart script here --
https://developers.google.com/chart/interactive/docs/gallery/vegachart#radar-chart-example
-- I wonder whether it is possible. Can the "marks" properties be adjusted
to insert an image, perhaps working with the transparency? Attached is a
sample.
Here's a snippet from that script:
...
"marks": [
{
"type": "group",
"name": "categories",
"zindex": 1,
"from": {
"facet": {"data": "table", "name": "facet", "groupby":
["category"]}
},
"marks": [
{
"type": "line",
"name": "category-line",
"from": {"data": "facet"},
"encode": {
"enter": {
"interpolate": {"value": "linear-closed"},
"x": {"signal": "scale('radial', datum.value) *
cos(scale('angular', datum.key))"},
"y": {"signal": "scale('radial', datum.value) *
sin(scale('angular', datum.key))"},
"stroke": {"value": color},
"strokeWidth": {"value": 1.5},
* "fill": {"value": color},
"fillOpacity": {"value": 0.1}*
}
...
Any help would be most welcome. Thanks!
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