I'm trying to find an equivalent to the d3.behavior.zoom() of the v3 version of d3.js. But until now I could not find anything.
What I'm looking for is to be able to do .center([width / 2, height / 2]) , meaning that the zoom is always applied to the center of the graph and not to the mouse's position.
I would like to know if there is any equivalent in v4 since they have removed this functionality.
Edited
I leave the zoom code that I have done, this works, but applies to the center but to the mouse position.
var zoom = d3.zoom()
.scaleExtent([1, 40])
.translateExtent([[-100, -100], [w + 90, h + 100]])
.on("zoom", zoomed);
svg.call(zoom);
function zoomed() {
var posicionIni = w/2;
svg.attr("transform", d3.event.transform);
gX.call(xAxis.scale(d3.event.transform.rescaleX(xScale)));
gY.call(yAxis.scale(d3.event.transform.rescaleY(yScale)));
grupo2.attr("transform",d3.event.transform);
grupoLineas.attr("transform",d3.event.transform);
grupo.attr("transform",d3.event.transform);
}
d3.select("#botonZoom")
.on("click", resetted);
function resetted() {
svg.transition()
.duration(750)
.call(zoom.transform, d3.zoomIdentity);
}
I leave the rest of the code of how I create the graphic:
//-----------------------------------Variables ---------------------------------------------------------------------------
//Alto y ancho
var w = 500;
var h = 500;
var padding = 0;
var coundata= 0;
var maxx = 0.30
var minx = -0.30
var maxy = 6
var miny = -6
//-----------------------------------CREAR GRAFICO SCATTER ----------------------------------------------------------------
//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
grupo = svg.append("svg:g");
var c2 = grupo.append("rect")
.attr("width", (w/2) - padding)
.attr("height", (h/2)- padding)
.attr("transform", "translate("+w/2+","+padding+")")
.attr("fill", "green");
var c1 = grupo.append("rect")
.attr("width", (w/2) - padding)
.attr("height", (h/2)- padding)
.attr("transform", "translate("+padding+","+padding+")")
.attr("fill", "yellow");
var c3 = grupo.append("rect")
.attr("width", (w/2) - padding)
.attr("height", (h/2)- padding)
.attr("transform", "translate("+padding+","+h/2+")")
.attr("fill", "red");
var c4 = grupo.append("rect")
.attr("width", (w/2) - padding)
.attr("height", (h/2)- padding)
.attr("transform", "translate("+w/2+","+h/2+")")
.attr("fill", "orange");
var g =svg.append("g");
//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);
nowData = []
var grupo2 = svg.append("svg:g");
//Creamos los puntos
var datos = grupo2.selectAll("circle")
.data(nowData)
.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;
})
.append("svg:title")
.text(function(d) {return "Valor x: "+d[0] +"\n Valor y :"+d[1]; })
;
Edition 2
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>D3 Test</title>
<script src="datos_puntos.json"></script>
<script type="text/javascript" src="d3/d3.js"></script>
<script type="text/javascript" src="d3/d3.min.js"></script>
<script type="text/javascript" src="d3/jquery.min.js"></script>
<style type="text/css">
.axis path,
.axis line {
fill: none;
stroke: black;
shape-rendering: crispEdges;
}
.axis text {
font-family: sans-serif;
font-size: 11px;
}
</style>
</head>
<body>
<div id="linegraph"></div>
<button id="botonZoom"> Reset </button>
<button class="play">play</button>
<button class="pause" disabled>pause</button>
<button class="stop" disabled>stop</button>
<input type="checkbox" name="planned_checked" id="eae" > eaepunt1
<input type="checkbox" name="planned_checked" id="arab" > arabpunt1
<input type="checkbox" name="planned_checked" id="planned_checked" > Cola
<input style="width:10px" value="1" type="numeric" name="tamanio_cola" id="tamanio_cola"/>Tamaño cola
<script>
///Aqui esta el codigo de arriba
</script>
</body>
</html>
Edition 3
I've got an example, with the zoom working as I want, but I can not apply it to my script. Here the example .