javascript - D3 V4, How can I have a tick mark at every data point, but a label at only select data points -

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as can see image i'm using monthly data. i'm trying find way display every tick mark, april month labels. example: apr 2014, apr 2015, apr 2016 , apr 2017 - , keep tick marks in between. in advance.

x axis generated code 

   g.append("g")           .attr("class", "axis axis--x")           .attr("transform", "translate(0," + height + ")")           .call(d3.axisbottom(x).ticks(d3.timemonth.every(1))                              .tickformat(d3.timeformat("%b %y")  )                            );      g.select('.axis.axis--x')     .selectall("text")                  .style("text-anchor", "end")                 .attr("dx", "-.8em")                 .attr("dy", ".15em")                 .attr("transform", "rotate(-65)" );

thanks sira, ended with:

 g.append("g")       .attr("class", "axis axis--x")       .attr("transform", "translate(0," + height + ")")       .call(d3.axisbottom(x).ticks(d3.timemonth.every(1))                          .tickformat(d3.timeformat("%b %y")  )                         );  g.select('.axis.axis--x') .selectall("text")              .style("text-anchor", "end")                         .style("opacity", function(d){                                 if (d3.select(this).text().includes("apr")){return "1"}else{return "0"}                                 })                          .attr("dx", "-.8em")             .attr("dy", ".15em")             .attr("transform", "rotate(-65)" );

take @ d3.class callback. inside callback, have access datum, index , this respectively.

so if want ticks show if contains "apr" in data, can like:

g.select('.axis.axis--x') .selectall("text")              .style("text-anchor", "end")             .attr("display", function(d, i, this) {                if (!d.contains("apr") {                   return "none";                }             })             .attr("dx", "-.8em")             .attr("dy", ".15em")             .attr("transform", "rotate(-65)" );

you can replace if other statements return "none" data point want disappear.


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