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line-component.js
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line-component.js
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function lineComponent() {
let width = 200;
let height = 200;
let xScale = d3.scaleLinear()
.domain([0, 100])
.range([0, 200]);
let yScale = d3.scaleLinear()
.domain([0, 13])
.range([0, 200]);
let axis = d3.axisBottom(xScale);
let svg = null;
function me(selection) {
if (!svg) {
svg = selection
.append("svg")
.attr("width", width)
.attr("height", height);
svg.append('g')
.attr('transform', 'translate(10,180)')
.call(axis);
svg = svg.append('g')
.attr('transform', 'translate(10,10)');
}
let lines = svg.selectAll("line")
.data(selection.datum());
// <line x1='0' y1='0' x2='10' y2='10'/>
lines.enter() // ENTER
.append("line")
.attr("stroke-weight", 1)
.attr("stroke", "black");
// EXIT
lines.exit().remove();
svg.selectAll('line') //UPDATE
.attr("x1", 0)
.attr("x2", function(d, i) {
return xScale(d);
})
.attr("y1", function(d, i) {
return yScale(i);
})
.attr("y2", function(d, i) {
return yScale(i);
});
let texts = svg.selectAll('text')
.data(selection.datum());
texts.enter()
.append('text');
texts.exit().remove();
svg.selectAll('text')
.attr('x', xScale)
.attr('font-size', 10)
.attr('font-family', 'sans-serif')
.attr('y', function(d, i) {
return yScale(i)
})
.attr('dy', 3)
.text(function(d) {
return d
});
}
me.width = function(arg) {
if (!arguments.length)
return width;
width = arg;
xScale.range([0, width - 10 * 2]);
return me;
}
me.height = function(arg) {
if (!arguments.length)
return height;
height = arg;
return me;
}
return me;
}