using d3 brush feature for region selection

config.json

{"description":"using d3 brush feature for region selection","endpoint":"","display":"svg","public":true,"require":[],"fileconfigs":{"inlet.js":{"default":true,"vim":false,"emacs":false,"fontSize":12},"style.css":{"default":true,"vim":false,"emacs":false,"fontSize":12},"config.json":{"default":true,"vim":false,"emacs":false,"fontSize":12}},"tab":"edit","display_percent":0.6040622299049263,"play":false,"loop":false,"restart":false,"autoinit":true,"pause":true,"loop_type":"period","bv":false,"nclones":15,"clone_opacity":0.4,"duration":3000,"ease":"linear","dt":0.01,"hidepanel":false}

inlet.js

//this can be used to select/brush 
//a particular region in a scatterplot
//like for linked plots
var svg = d3.select("svg");

var xscale = d3.scale.linear()
    .domain([0,1])
    .range([0,300]);

var yscale = d3.scale.linear()
    .domain([0,1])
    .range([0,300]);

var brush = d3.svg.brush()
    .x(xscale)
    .y(yscale);

var slider = svg.append("g")
    .attr("transform","translate("+[100,100]+")");

brush.extent([0.4,0.6]);
brush(slider);

slider.selectAll("rect.background").attr("height",300);

style.css

.background {
visibility: visible !important;
}

.extent{
visibility: visible !important;
fill:#C200A3;
}

.resize rect{
visibility: visible !important;
fill: #0089e7;
}