A simple HTML/JavaScript graph drawing tool.

Controls: Drag with mouse to move view in graph. Use mouse wheel to zoom in/out on graph. Zooming with 'X' or 'Y' keys held down stretches the graph in a single axis. Graph can be saved as image like any HTML canvas.

Mathematical functions available:

• sin
• cos
• log
• sqrt
• tan
• abs
• atan
• pi
• asin
• acos

Functions are interpreted by browser's JavaScript engine. If a function isn't available by default it can probably be called with "Math." prefix e.g. "Math.sin(x)".