javascript - d3.js - Change value for Tooltip with radio button -


i creating heatmap ukraine economic indicators.

the map

depending on radio-button checked, different colorscale used visualize different values/indicators.

        d3.selectall('.radio').on('change', function(){              if (document.getelementbyid('none').checked) {                              areas.transition().duration(250)                                  .attr('fill','steelblue');}              else if (document.getelementbyid('agr').checked) {                              areas.transition().duration(250)                                  .attr('fill', function(d){return colorscaleagr(d.properties.agricindx)});} .... , on.

right tooltip (div) shows name of region hovered over. i'd display value region, corresponding indicator selected @ moment. tooltip's content (the name) determined within event-handler of path/map element.

var areas = group.append('path')                     .attr('d',path)                     .attr('class', function(d) { return "subunit" + d.id; })                     .attr('fill','steelblue')                     .attr('stroke', 'white')                     .attr('stroke-width', '1px')                     .attr('opacity','0.8')                                                        // hover & tooltip                     .on("mouseover", function(d) {                         d3.select(this).transition().duration(200).style("opacity", 1);                         div.transition().duration(300).style("opacity", 1)                                                   div.html(d.properties.name )                            .style("left", (d3.mouse(this)[0] + 330)  + "px")                            .style("top", (d3.mouse(this)[1] + 15)  + "px");                         })                      .on("mousemove", function(d) {                                                                           div.html(d.properties.name)                            .style("left", (d3.mouse(this)[0] + 350) + "px")                            .style("top", (d3.mouse(this)[1] + 25)  + "px");                          })                        .on("mouseout", function(d) {                         d3.select(this).transition().duration(200).style("opacity", 0.8);                                                    div.transition().duration(300).style("opacity", 0)                                                   });

so question is: how can take account status of radio-button, whithin path-element (area) , since data single entities (regions) stored there. if try manipulate tooltip within radio-buttion selection, data not available me. hope made myself understand :). appreciate help.

i think understand trying here's attempt of do:

  1. format data object key/value pairs follow: 'none': 10, 'agr': 4, etc...
  2. store key different radio buttons global variable update on radio change function.
  3. when creating tooltip on mouseover function, print correct value calling d[key], i.e. d['agr'].

hope helps!


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