2020-03-04
* Uploaded to website.

2020-03-03
* Modified drawPoint, drawCurve, drawParametric in Graphite2D to remove non-numerics for drawing point/line.

2020-02-26
* Modified getExprssions in Helper.js to ignore commas within expressions. Example: [pow(sin(t),3),pow(cos(t),3)]
2020-02-25
* Detecting URL parameters moved from PHP to JavaScript method URLParams in MathBin.js.

2020-02-13
* Added Quality (nticks) slider/textbox for "curve" and "parametric".

2020-02-12
* Moved cdf files from /interactive/cdf folder to /mma/cdf folder.
* Added nice method to scaleX and scaleY.
* Created graphite version of CDF for archimedean-spiral-2d.php.
* Removed autorun option. All forms automatically call doStart after page is loaded.

2020-02-01
* Include graphite.js, etc. only if JavaScript bin.
* Added divFlex to control placement of frmBin and divOut. Default positions: frmBin is left, divOut is right.
* divOut contains one or more divs, usually one for graph and one for text.

2020-01-29
* Remove from factor-binomial.php:
  $blurb = "Factors a polynomial of the form <i>x</i><sup><i>n</i></sup> &PlusMinus; <i>y</i><sup><i>n</i></sup>";
* Remove from polygon-by-circumcircle-2d.php:
  $blurb = "Plots a <i>n</i>-sided regular polygon inscribed in a unit circle. Each vertex (point) of the polygon is found by finding <i>n</i> evenly spaced points on the circumference of the circle. The interior angles of a regular polygon add up to (<i>n</i> - 2) * 180 degrees.";
* Bins that have both JS and MMA: factorial.php, prime-factorization.php

2020-01-27
* Modified JavaScript bins: bisection-method-2d.php, function-2d.php, functions-2d.php, newtons-method-2d.php, rectangle-method-2d.php, secant-method.php, simpsons-rule-2d.php, trapezoidal-rule-2d.php.
* Modified interactive/inc/head.php file.

2020-01-10
* Upgraded to version 5.15 of d3, which caused minor changes in Graphite2D.js
* Changed scale.linear() to scaleLinear(). See: https://observablehq.com/@d3/d3-scalelinear
* Changed x-axis from d3.svg.axis().scale(rangeX).orient("bottom").ticks(10); to d3.axisBottom(rangeX).ticks(10);
* Changed y-axis from d3.svg.axis().scale(rangeY).orient("left").ticks(10); to d3.axisLeft(rangeY).ticks(10);
* Changed x-axis grid from .classed("grid x_grid", true) to .attr('class', 'grid gridX')
* Changed y-axis grid from .classed("grid y_grid", true) to .attr('class', 'grid gridY')
* Changed x-axis from .classed("labels x_labels", true) to .attr('class', 'axis axisX')
* Changed y-axis from .classed("labels y_labels", true) to .attr('class', 'axis axisY')
* Added resize method to resize graph when parent is resized.

2020-01-01
* D3 namespaces: svg, xhtml, xlink, xml, xmlns.
* Not currently using function-plot - only d3.
* Add points to graph. See: https://medium.com/@binyamin/d3-select-selectall-data-enter-and-exit-f0e4f0d3e1d0
* Tutorial: https://www.lynda.com/D3-js-tutorials/D3-js-Essential-Training-Data-Scientists/504428-2.html