D3 v4 ajust zoom to center

d3 zoom
d3 interpolate zoom
d3-zoom touch
d3 canvas zoom
d3 zoom react
d3 zoom with viewbox
d3 zoom animate
d3 transition zoom

Is there an obvious d3 V4 equivalent to the V3 d3.behavior.zoom()

.center([width / 2, height / 2]) syntax.

(I've searched around, and most working examples of manual zooming etc run in V3... and the API docs don't mention it as best I can tell. )

I am trying to add manual zoomin/out buttons, using the example:

https://bl.ocks.org/mbostock/7ec977c95910dd026812 as a base, but with V4.

Edit

Harpal show me an example working in d3 v4, but i dont know how apply to my project.

So there is my script:

//-----------------------------------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([0,5])
                                 .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", "rgba(0, 255, 0, 0.3)");

            var c1 = grupo.append("rect")
                .attr("width", (w/2) - padding)             
                .attr("height", (h/2)- padding)
                .attr("transform", "translate("+padding+","+padding+")")
                .attr("fill", "rgba(255, 255, 0, 0.3)");


            var c3 = grupo.append("rect")
                .attr("width", (w/2) - padding)             
                .attr("height", (h/2)- padding)
                .attr("transform", "translate("+padding+","+h/2+")")
                .attr("fill", "rgba(255, 0, 0, 0.3)");

            var c4 = grupo.append("rect")
                .attr("width", (w/2) - padding)             
                .attr("height", (h/2)- padding)
                .attr("transform", "translate("+w/2+","+h/2+")")
                .attr("fill", "rgba(255, 165, 0, 0.3)");


            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]; })                     

               ;
            var grupoLineas = svg.append("svg:g");
//--------------------------------- ZOOM---------------------------------------------------------------------              
            var zoom = d3.zoom()                            
                // Don’t allow the zoomed area to be bigger than the viewport.
                .scaleExtent([1, Infinity])
                .translateExtent([[0, 0], [w, h]])
                .extent([[0, 0], [w, h]])
                .on("zoom", zoomed);                


            grupo.style("transform-origin","50% 50% 0");
            grupo2.style("transform-origin","50% 50% 0");
            grupoLineas.style("transform-origin","50% 50% 0");
            svg.style("transform-origin","50% 50% 0");
            gX.style("transform-origin","50% 50% 0");
            gY.style("transform-origin","50% 50% 0");

            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)));                      
                grupo2.attr("transform",d3.event.transform);
                grupoLineas.attr("transform",d3.event.transform);
                grupo.attr("transform",d3.event.transform);         
            }   
            function resetted() {
              svg.transition()
                  .duration(750)
                  .call(zoom.transform, d3.zoomIdentity);
            }
            d3.select("#zoom_in")
                .on("click",function(){
                    zoom.scaleBy(svg, 2);
                })
            d3.select("#zoom_out")
                .on("click",function(){
                    zoom.scaleBy(svg, 0.5);
                })              
//---------------------------------------Funcion mostrarDatos ----------------------------------------------------------            
            function mostrarDatos(){
                nowData=[]
                grupo2.selectAll("circle")
                    .data(nowData)
                    .exit()
                    .remove()
                if($("#eae").prop('checked') == true)               
                {   
                    nowData.push(eaepunt1[coundata])                                    
                    grupo2.selectAll("circle")

                }               

                if($("#arab").prop('checked') == true)
                {
                    nowData.push(arabpunt1[coundata])                                                               

                }                                           
                console.log(nowData)

                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]; })                
                   ;
            }
            $("#eae").change(function()
            {
                mostrarDatos();
            });

            $("#arab").change(function()
            {
                mostrarDatos()
            }); 

I apply the ("transform-origin","50% 50% 0"); but it not works correctly

Zoom Center, By setting zoom.center, you can control the focal point of the zoom behavior margin.bottom; var zoom = d3.behavior.zoom() .center([width / 2,  Renders a single US state, using d3-zoom to fit the container, and to allow zooming and panning. The desired behavior is to constrain panning to the bounds of the state. The TopoJSON is projected to 600x600, and at that container size, the zoom & pan works great.

Not sure if that answers your question, but here you can see similar example in V4: https://bl.ocks.org/mbostock/db6b4335bf1662b413e7968910104f0f

You can find detailed documentation on the zoom behavior in D3 API Docs for version 4 and I don't think there exist a more "obvious" way that is not documented: https://github.com/d3/d3/blob/master/API.md#zooming-d3-zoom

Zoom, pan, click to center, Use mouse-click to zoom into specific path and center it. The first and second problems are easily solved using the viewBox attribute and d3.behavior.zoom(). So we are trying to fit an SVG of width 2000 and height 2000 into a viewbox src="//d3js.org/d3.v3.min.js"></script> <script> var margin = {top: 0,  Updated February 1, 2018. D3 V4 zoom with Axis explained. Open

I think it is just d3.zoom() now

var zoom = d3.zoom()
            // Don’t allow the zoomed area to be bigger than the viewport.
            .scaleExtent([1, Infinity])
            .translateExtent([[0, 0], [width, height]])
            .extent([[0, 0], [width, height]])
            .on("zoom", zoomed);

Panning and Zooming with D3v4, How to use D3v4's zoom behavior to implement panning and zooming on In the old version of D3, we would attach the axis to the zoom behavior, set the Second, we need a transform to center the view on the target point:. I needed to add zoom/pan on d3.js visualisation. After a painful search on Google, I finally found a simple way to do it. d3.js has everything to do it with only a few lines of code.

You could add transform-origin to a style attribute to the element on which you perform the zoom:

.style("transform-origin", "50% 50% 0")

EDIT

Working Plnkr here

Request d3v5: simpler function and examples for zoom in/center , I have three buttons that need to smoothly zoom in, zoom center, and zoom out. The d3 mouse wheel event makes zooming trivial, but we have to support . Looks like this line zoom.js 249 is what I'm after, but have no clue as to how If I set extent to the full width and height of the svg, it doens't seem to  D3’s force layout uses a physics based simulator for positioning visual elements. Forces can be set up between elements, for example: all elements repel one another; elements are attracted to center(s) of gravity; linked elements (e.g. friendship) are a fixed distance apart (network visualisation) elements may not overlap (collision detection)

Here is the solution I found:

function zoomed() {
    var scale = d3.event.transform.k; 
    grupopadre.attr("transform", "translate(" + 0 + ")scale(" + scale + ")");
}

datamake:article, Appendix: D3 zoom V3 vs v4 & Sources It is often best to set-up a dedicated SVG rectangle ( rect ) with fill but 0 When Pluto is 5,913,000,000 km away from the Sun in real space, it will be 59,130 pixels away from the centre of the Sun in  I have D3 v4 working with a forked build of the d3-zoom library which allows for dual scaling. Been using it for a few weeks without any issues and no apparent conflicts with core functionality of D3. I haven't had time to open a PR yet, but I'm hoping to get one submitted in the next week or two.

Simplest way to add zoom/pan on d3.js (version 3 and 4) (Example), attr("transform", "translate(0,0) scale(1)"); But you'll also need to reset the d3.​behavior.zoom. You need to modify a little the snippet to use a  A null center indicates that mousewheel zooming should zoom in and out around the current mouse location. # zoom. size ( [ size ]) If size is specified, sets the viewport size to the specified dimensions [ width, height] and returns this zoom behavior. If size is not specified, returns the current viewport size which defaults to [960, 500].

Zoom Behavior, Pan+Zoom Zoomable Area Geometric Zooming d3.geo.tile Raster & Vector If center is specified, sets the focal point [x, y] for mousewheel zooming and Specifies an x-scale whose domain should be automatically adjusted when zooming. d3-loom. This is a d3 plugin to create a "loom" visualization. For an extensive explanation of the effects of all the settings decribed farther below, please see the blog/tutorial I wrote about the loom here.

Zooming in d3.js, How zooming works in d3.js: a set of tiny examples with code illustrating different techniques. Updated May 3, 2020. Basic US State Map - D3. Open

Comments
  • I see this example but the zoom is not aplied from center, is aplied from cursor position
  • This works when you zoom out (the graphic is centered), but I need de zoom aplied to the center of graphic all time and not to the cursor position
  • Ok the example works, can you check the edit and say how i need apply in my script?