walkerjeffd/.block

## .block
license: mit

## README.md

      
    Raw
  

              README.md
            
          
    Built with blockbuilder.org

  
## index.html
<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }

.axis {
  font: 10px sans-serif;
}

.axis path,
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

.axis--x path {
  display: none;
}

.line {
  fill: none;
  stroke: steelblue;
  stroke-width: 1.5px;
}
  </style>
</head>

<body>
<script>

  var margin = {top: 20, right: 20, bottom: 30, left: 50},
      width = 960 - margin.left - margin.right,
      height = 500 - margin.top - margin.bottom;

  function compute(params) {
	  var Zc = params.Zc, // control depth (cm)
        Zw = params.Zw, // weir depth (cm)
        W = params.W,     // mean cell width = area / flow path length (km)
        a = params.a,     // empirical
        b = params.b,     // empirical
      pump_capacity = params.pump_capacity;

  var Z_arr = d3.range(0, 100, 1);

  var Q_arr = Z_arr.map(function (Z) {
    var Q = W * a * Math.pow((Z - Zw), b);
    //   console.log(Z, Q)
      return Z < Zc && Z < Zw ? 0 :
      Q > pump_capacity ? pump_capacity : Q;
    });

    return d3.zip(Z_arr, Q_arr);
  }

  var data = compute({Zc: 40, Zw: 40, W: 1, a: 1, b: 1.5, pump_capacity: 100});

  var x = d3.scaleLinear()
	  .domain([0, 100])
    .range([0]);

  var y = d3.scaleLinear()
    .domain([0, 110])
    .range([height, 0]);

  var line = d3.line()
    .x(function(d) { return x(d[0]); })
    .y(function(d) { return y(d[1]); });

  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 + ")");


  x.domain(d3.extent(data, function(d) { return d[0]; }));
  y.domain(d3.extent(data, function(d) { return d[1]; }));

  svg.append("g")
      .attr("class", "axis axis--x")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x));

  svg.append("g")
      .attr("class", "axis axis--y")
      .call(d3.axisLeft(y))
    .append("text")
      .attr("class", "axis-title")
      .attr("transform", "rotate(-90)")
      .attr("y", 6)
      .attr("dy", ".71em")
      .style("text-anchor", "end")
      .text("Q");

  svg.append("path")
      .datum(data)
      .attr("class", "line")
      .attr("d", line);
</script>
</body>
	<!DOCTYPE html>
	<head>
	<meta charset="utf-8">
	<script src="https://d3js.org/d3.v4.min.js"></script>
	<style>
	body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }

	.axis {
	font: 10px sans-serif;
	}

	.axis path,
	.axis line {
	fill: none;
	stroke: #000;
	shape-rendering: crispEdges;
	}

	.axis--x path {
	display: none;
	}

	.line {
	fill: none;
	stroke: steelblue;
	stroke-width: 1.5px;
	}
	</style>
	</head>

	<body>
	<script>

	var margin = {top: 20, right: 20, bottom: 30, left: 50},
	width = 960 - margin.left - margin.right,
	height = 500 - margin.top - margin.bottom;

	function compute(params) {
	var Zc = params.Zc, // control depth (cm)
	Zw = params.Zw, // weir depth (cm)
	W = params.W, // mean cell width = area / flow path length (km)
	a = params.a, // empirical
	b = params.b, // empirical
	pump_capacity = params.pump_capacity;

	var Z_arr = d3.range(0, 100, 1);

	var Q_arr = Z_arr.map(function (Z) {
	var Q = W * a * Math.pow((Z - Zw), b);
	// console.log(Z, Q)
	return Z < Zc && Z < Zw ? 0 :
	Q > pump_capacity ? pump_capacity : Q;
	});

	return d3.zip(Z_arr, Q_arr);
	}

	var data = compute({Zc: 40, Zw: 40, W: 1, a: 1, b: 1.5, pump_capacity: 100});

	var x = d3.scaleLinear()
	.domain([0, 100])
	.range([0]);

	var y = d3.scaleLinear()
	.domain([0, 110])
	.range([height, 0]);

	var line = d3.line()
	.x(function(d) { return x(d[0]); })
	.y(function(d) { return y(d[1]); });

	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 + ")");


	x.domain(d3.extent(data, function(d) { return d[0]; }));
	y.domain(d3.extent(data, function(d) { return d[1]; }));

	svg.append("g")
	.attr("class", "axis axis--x")
	.attr("transform", "translate(0," + height + ")")
	.call(d3.axisBottom(x));

	svg.append("g")
	.attr("class", "axis axis--y")
	.call(d3.axisLeft(y))
	.append("text")
	.attr("class", "axis-title")
	.attr("transform", "rotate(-90)")
	.attr("y", 6)
	.attr("dy", ".71em")
	.style("text-anchor", "end")
	.text("Q");

	svg.append("path")
	.datum(data)
	.attr("class", "line")
	.attr("d", line);
	</script>
	</body>