[英]D3 zoom only affect in axis and not in data
I am new with d3 library and I making some test. 我是d3库的新手,并且进行了一些测试。 I have a scatter plot with 4 quadrants and I'm trying to apply zoom. 我有一个具有4个象限的散点图,我正在尝试应用缩放。 When I zoom the scale of axis change, but the data position no. 当我缩放轴的比例时会改变,但是数据位置没有。
Here the code: 这里的代码:
//-----------------------------------CREAR GRAFICO SCATTER (sin nada en especial)-------------------------------------
//Alto y ancho
var w = 500;
var h = 500;
var padding = 0;
var maxx = 0.30
var minx = -0.30
var maxy = 6
var miny = -6
//Static dataset
var dataset = [
[0.12, 4], [0.05, 3], [0.15, -3], [-0.20, -5], [-0.10, 3]
];
//Funciones de escala
var xScale = d3.scaleLinear()
.domain([minx, maxx])
.range([padding, h]);
var yScale = d3.scaleLinear()
.domain([miny, maxy])
.range([h, padding]);
var rScale = d3.scaleLinear()
.domain([0, d3.max(dataset, function(d) { return d[1]; })])
.range([2, 6]);
//Eje x
var xAxis = d3.axisBottom()
.scale(xScale);;
//Eje y
var yAxis = d3.axisLeft()
.scale(yScale);
//Crear el elemento svg
var svg = d3.select("#linegraph")
.append("svg")
.attr("width", w)
.attr("height", h);
//Colores
var c1 = svg.append("rect")
.attr("width", (w/2) - padding)
.attr("height", (h/2)- padding)
.attr("transform", "translate("+padding+","+padding+")")
.attr("fill", "yellow");
var c2 = svg.append("rect")
.attr("width", (w/2) - padding)
.attr("height", (h/2)- padding)
.attr("transform", "translate("+w/2+","+padding+")")
.attr("fill", "green");
var c3 = svg.append("rect")
.attr("width", (w/2) - padding)
.attr("height", (h/2)- padding)
.attr("transform", "translate("+padding+","+h/2+")")
.attr("fill", "red");
var c4 = svg.append("rect")
.attr("width", (w/2) - padding)
.attr("height", (h/2)- padding)
.attr("transform", "translate("+w/2+","+h/2+")")
.attr("fill", "orange");
//Añadimos el eje x
var gX = svg.append("g")
.attr("class", "axis")
.attr("transform", "translate(0," + (h/2) + ")")
.call(xAxis);
//Añadimos el eje y
var gY = svg.append("g")
.attr("class", "axis")
.attr("transform", "translate(" + (w/2) + ",0)")
.call(yAxis);
//Creamos los puntos
var datos = svg.selectAll("circle")
.data(dataset)
.enter()
.append("circle")
.attr("cx", function(d) {
return xScale(d[0]);
})
.attr("cy", function(d) {
return yScale(d[1]);
})
.attr("r", function(d) {
return 5;
});
//--------------------------------- ZOOM---------------------------------------------------------------------
var zoom = d3.zoom()
.scaleExtent([1, 40])
.translateExtent([[-100, -100], [w + 90, h + 100]])
.on("zoom", zoomed);
svg.call(zoom);
function zoomed() {
svg.attr("transform", d3.event.transform);
gX.call(xAxis.scale(d3.event.transform.rescaleX(xScale)));
gY.call(yAxis.scale(d3.event.transform.rescaleY(yScale)));
}
This is the plot without zoom: 这是没有缩放的图:
And this with zoom: 这与缩放:
As you can see the data points and the quadrants color do not affect zoom, but in scale of axis it does. 如您所见,数据点和象限颜色不会影响缩放,但是会影响轴的比例。
because of you attr svg transform ,try g=svg.append("g")
and then use g append rect . 由于您进行了attr svg转换,请尝试g=svg.append("g")
,然后使用g append rect。 and in zoomed function g.attr("transform",d3.event.transform)
以及缩放功能g.attr("transform",d3.event.transform)
Try to add this line: 尝试添加以下行:
datos.attr("transform",d3.event.transform)
The zoomed function is something like this: 缩放功能如下所示:
var zoom = d3.zoom()
.scaleExtent([1, 40])
.translateExtent([[-100, -100], [w + 90, h + 100]])
.on("zoom", zoomed);
svg.call(zoom);
function zoomed() {
svg.attr("transform", d3.event.transform);
gX.call(xAxis.scale(d3.event.transform.rescaleX(xScale)));
gY.call(yAxis.scale(d3.event.transform.rescaleY(yScale)));
datos.attr("transform",d3.event.transform)
}
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