Since delving into the world of D3.js, I have encountered some challenges. Here is a summary of what I have experimented with so far:
Below is my JavaScript code:
d3.json("../js/sample2.json", function(data) {
var canvas = d3.select("body").append("svg")
.attr("width", 500)
.attr("height", 500)
.attr("border", "black")
var group = canvas.append("g")
.attr("transform", "translate(100,10)")
var line = d3.svg.line()
.x(function(d, i) {
return data[0].position[i];
})
.y(function(d, i) {
return data[1].position[i];
});
var line1 = d3.svg.line()
.x(function(d, i) {
return data[2].position[i];
})
.y(function(d, i) {
return data[3].position[i];
});
var j = 0;
group.selectAll("path")
.data(data).enter()
.append("path")
// Have to provide where exaclty the line array is ! (line(array))
.attr("d", line(data[j].position))
.attr("fill", "none")
.attr("stroke", "green")
.attr("stroke-width", 3);
var group2 = group.append("g")
.attr("transform", "translate(100,10)")
group2.selectAll("path")
.data(data).enter()
.append("path")
// Have to provide where exaclty the line array is ! (line(array))
.attr("d", line1(data[j].position))
.attr("fill", "none")
.attr("stroke", "red")
.attr("stroke-width", 3);
});
This is the structure of my JSON file:
[ {"name": "x1",
"position":[40,60,80,100,200]
},
{"name": "y1",
"position":[70,190,220,160,240]},
{"name": "x2",
"position":[40,60,80,100,200]
},
{"name": "y2",
"position":[20,90,20,60,40]}
]
I am working towards displaying a dynamic line chart using the data retrieved from the JSON file. Although I have achieved an output currently, it's vital that these enhancements are more fluid:
Achieving dynamism in reflecting additional data within the JSON is crucial for this task.
The JSON could evolve from x1,y1 to xn,yn...(Similar format as above)
[ {"name": "x1",
"position":[40,60,80,100,200]
},
{"name": "y1",
"position":[70,190,220,160,240]
},
{"name": "x2",
"position":[40,60,80,100,200]
},
{"name": "y2",
"position":[20,90,20,60,40]}
.
.
.
.
{"name": "xn",
"position":[40,60,80,100,200]
},
{"name": "yn",
"position":[20,90,20,60,40]}]
My current challenges regarding this implementation include:
- How can this process be tailored to be more dynamic (i.e., irrespective of the amount of data within the JSON, the chart should dynamically adjust with the necessary graphs)?
- Is the data format in the JSON fed into D3.js through D3.json causing any hindrances? (Or is there a specific format required by D3.json and how flexible is it?)