Cloud Graph is an online graphing calculator for drawing function, polar and parametric graphs.
Entering Expressions
Expresions are entered using standard calculator algebraic notation.
- Available operators: +, -, *, /, ^
- Available constants: pi, e
- Available functions: sin, cos, tan, asin, acos, atan, pow, sqrt, log, log10, exp, abs, rnd, ceil, floor, random
- Implicit multiplication supported: e.g. 2pi => 2 * pi
Defining Graphs
Enter the expression for the graph using the appropriate free variable.
Click the keypad button next to the field to show a keypad with all available built-in functions.
- Function: define as y(x)
- Polar: define as r(t)
- Parametric: define using x(t) and y(t)
You can change the color and width of the line used to draw the graph.
You may also specify a range for the graph.
- From: The start value of the free variable (x or t)
- To: The end value of the free variable (x or t)
- Step: Amount to add when computing each point
If the range is not specified for a function graph it is unbound and draws over the entire graphing area.
If not specified for polar or parametric graphs it uses the default range for t of: [-pi to pi] with a step of pi/64.
Note: You can enter mathematical expressions in the range fields. (E.g. pi/2)
Navigating Graphs
Use the buttons on the navigation bars next to the graph to pan the graph view.
- Pan left/right/up/down - Pans the view the amount of one grid line in the specified direction
- Page left/right/up/down - Pans the view the amount of one page width/height in the specified direction
The zoom out button zooms out 2x from the center of the graph. The zoom in button depends on the context.
- If an area of the graph is selected it zooms in on that area
- If a point is selected it zooms in 2x on that point
- Otherwise it zooms in 2x on the center of the graph
- You may also double-click to quickly zoom in 2x on a point
Use the previous and next buttons to go back and forth between views, like a web browser.
To define a custom grid click the Grid button and set the range.
Note: You can enter mathematical expressions in these fields. (E.g. pi/2)
