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Insert a gasket so that the points do not overlap with the y or x axis

I created this graph in D3: http://bl.ocks.org/cddesja/aee65f660c24cb2144fd

There are two things that I would like to change.

1) I would like to make sure that none of my points coincide with the y or x axis. I thought I could use transform() to create a little buffer, but this creates a gap between the x and y axis lines, which I don't want. How do I do it right?

2) I would like to get rid of the marks at the intersection of the x and y lines. I hope that as soon as I move the marks (and then the points and lines), these marks will automatically disappear. I do not know whether this is true or not.

Thanks in advance. Chris

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1.) This is controlled by the domain of your weights. Since your domains are set in the data volume, the axis starts there. A simple fix is ​​to increase your domain to + - N percent of the range. In addition, I recommend removing .nice() , as you just end up fighting it to control the range.

 // get extents and range var xExtent = d3.extent(data, function(d) { return d.grade; }), xRange = xExtent[1] - xExtent[0], yExtent = d3.extent(data, function(d) { return d.bin; }), yRange = yExtent[1] - yExtent[0]; // set domain to be extent +- 5% x.domain([xExtent[0] - (xRange * .05), xExtent[1] + (xRange * .05)]); y.domain([yExtent[0] - (yRange * .05), yExtent[1] + (yRange * .05)]);

2.) This is controlled by the outerTickSize option. Just set it to zero.

 var yAxisLeft = d3.svg.axis() .scale(y) .ticks(yTicks) .outerTickSize(0) //<-- set to zero .orient("left");

Full example working code:

 <!DOCTYPE html> <html> <meta charset="utf-8"> <head> <title>Proportion of Students Suspended <body></body> Grade</title> <style type="text/css"> body { font: 10px Helvetica; } .axis path, .axis line { fill: none; stroke: #000; shape-rendering: crispEdges; } </style> </head> <body> <script src="//d3js.org/d3.v3.min.js" charset="utf-8"></script> <script type="text/javascript"> // Set up the margins var margin = {top: 50, right: 50, bottom: 30, left: 50}, width = 1000 - margin.left - margin.right, height = 500 - margin.top - margin.bottom yTicks = 5 var x = d3.scale.linear() .range([0, width]); var y = d3.scale.linear() .range([height, 0]); var xAxisBot = d3.svg.axis() .scale(x) .outerTickSize(0) .orient("bottom"); var xAxisTop = d3.svg.axis() .scale(x) .tickFormat('') .outerTickSize(0) .orient("top"); var yAxisLeft = d3.svg.axis() .scale(y) .ticks(yTicks) .outerTickSize(0) .orient("left"); var yAxisRight = d3.svg.axis() .scale(y) .ticks(yTicks) .tickFormat('') .outerTickSize(0) .orient("right"); var line = d3.svg.line() .x(function(d) { return x(d.grade); }) .y(function(d) { return y(d.bin); }); var svg = d3.select("body").append("svg") .attr("width", width + margin.left + margin.right) .attr("height", height + margin.top + margin.bottom) .append("g") .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); var data = [{"grade":1,"bin":0.0398,"number":14943,"total":3.2306},{"grade":2,"bin":0.0605,"number":14128,"total":3.3778},{"grade":3,"bin":0.0777,"number":13590,"total":3.4621},{"grade":4,"bin":0.103,"number":13147,"total":3.7474},{"grade":5,"bin":0.1207,"number":12936,"total":3.7055},{"grade":6,"bin":0.202,"number":12857,"total":5.2757},{"grade":7,"bin":0.2534,"number":12962,"total":5.7908},{"grade":8,"bin":0.2561,"number":13362,"total":5.7759},{"grade":9,"bin":0.1873,"number":16618,"total":5.8429},{"grade":10,"bin":0.168,"number":14996,"total":5.4448},{"grade":11,"bin":0.1178,"number":13119,"total":4.3997},{"grade":12,"bin":0.0605,"number":12061,"total":3.8986}]; var xExtent = d3.extent(data, function(d) { return d.grade; }), xRange = xExtent[1] - xExtent[0], yExtent = d3.extent(data, function(d) { return d.bin; }), yRange = yExtent[1] - yExtent[0]; x.domain([xExtent[0] - (xRange * .05), xExtent[1] + (xRange * .05)]); y.domain([yExtent[0] - (yRange * .05), yExtent[1] + (yRange * .05)]); svg.append("g") .attr("class", "x axis") .attr("transform", "translate(0," + height + ")") .call(xAxisBot) .append("text") .attr("class", "label") .attr("x", width/2) .attr("y", 28) .style("text-anchor", "end") .text("Grade"); svg.append("g") .attr("class", "x axis") .call(xAxisTop); svg.append("g") .attr("class", "y axis") .call(yAxisLeft) .append("text") .attr("class", "label") .attr("transform", "rotate(-90)") .attr("y", -40) .attr("x", -(height / 5)) .attr("dy", ".71em") .style("text-anchor", "end") .text("Proportion of Students Suspended at Least Once"); svg.append("g") .attr("class", "y axis") .attr("transform", "translate(" + width + ", 0)") .call(yAxisRight); svg.append("path") .datum(data) .attr("class", "line") .attr("d", line) .style("fill", "none") .style("stroke", "#3B3A35") .style("stroke-width", "1.5px"); svg.selectAll(".dot") .data(data) .enter().append("circle") .attr("class", "dot") .attr("r", function(d) { return 10; }) .attr("cx", function(d) { return x(d.grade); }) .attr("cy", function(d) { return y(d.bin); }) .attr("transform", "translate(0, 0)") .on("mouseover", function(d) { //Get this bar x/y values, then augment for the tooltip var xPosition = parseFloat(d3.select(this).attr("cx")) + 0; var yPosition = parseFloat(d3.select(this).attr("cy")) + 0; d3.select(this) .transition() .duration(500) .style("fill-opacity", .35) .attr("r", 20) }) .on("mouseout", function() { //Hide the tooltip d3.select(this) .transition() .duration(500) .style("fill-opacity", 1) .attr("r", function(d) { return 10; }); }) .style("fill", "#3B3A35") .style("stroke", "#3B3A35") .style("stroke-width", "1.2px"); </script> </body> </html>
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