Draw two plots using chartjs over one another with transparency - chart.js

Question

In Chartjs I have two plots, as shown here:
var config = {
type: 'line',
data: {
labels: [
"2017-07-03T01:05:00+0100",
....
],
datasets: [
{
label: "Consumption",
fill: 'origin',
pointRadius: 0,
borderColor: "#0000ff",
backgroundColor: "rgba(255,10,13,255)",
data: [
0.015625,
0.0199861111111,
...
],
}
,
{
fill: 'origin',
label: "PV",
pointRadius: 0,
borderColor: "#ebf909",
backgroundColor: "rgba(29,241,13,210)",
data: [
0.0,
.....
],
}
]
},
options: {
responsive: true,
title:{
display:true,
text:"Chart.js Line Chart - Stacked Area"
},
tooltips: {
mode: 'index',
},
hover: {
mode: 'index'
},
scales: {
xAxes: [{
scaleLabel: {
display: true,
labelString: 'Time'
}
}],
yAxes: [{
stacked: false,
scaleLabel: {
display: true,
labelString: 'kWh'
}
}]
}
}
};
var ctx = document.getElementById("canvas").getContext("2d");
var myChart = new Chart(ctx, config);
Is there any way I can make the green plot show through the red one in places where the latter completely obscures the former?

Answer 1

You need to set fill property to false for the first dataset (the red one), to make it transparent.
datasets: [{
label: "Consumption",
fill: false,
pointRadius: 0,
borderColor: "#0000ff",
backgroundColor: "rgba(255,10,13,255)",
...
or, you can also reduce the opacity of background color, like so ...
backgroundColor: "rgba(255, 10, 13, 0.1)"
Here is the working codepen