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JSPlot Documentation: Plotting functions

1. The plotting canvas
2. Plotting data
3. Plotting functions
4. Vector graphics
5. Graph plotting styles
6. Graph options
7. Graph axis options
8. Vector graphics objects

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JSPlot_FunctionEvaluator class: API reference

Instances of the JSPlot_FunctionEvaluator class are used to automatically generate datasets (instances of the JSPlot_DataSet class) by evaluating Javascript functions.

my_function = new JSPlot_FunctionEvaluator(title, styling, functions);

Argument	Allowed values	Description
title	String	The label for this dataset in the graph's legend. Set to a blank string to create no legend entry for this dataset.
styling	Associative array	An associative array of styling options for this dataset. Allowed key values are listed here.
functions	Array	An array of Javascript functions which should be evaluated to produce each column of the data set.

Once instantiated, the following methods of the JSPlot_FunctionEvaluator class can be used to generate JSPlot_DataSet instances:

Method	Arguments	Description
evaluate_linear_raster	x_min – number x_max – number point_count – number auto_update – boolean	Evaluate the functions at point_count linearly-spaced points between x_min and x_max.
evaluate_log_raster	x_min – number x_max – number point_count – number auto_update – boolean	Evaluate the functions at point_count log-spaced points between x_min and x_max.
evaluate_over_grid	x_min – number x_max – number point_count_x – number y_min – number y_max – number point_count_y – number	Evaluate the functions over a grid of linearly-spaced points along the x- and y-axes.