CLASS AccLinePlot EXTENDS Plot (Defined in: jpgraph_line.php : 421)

AccLinePlot | Plot
AccLinePlot() Max() Min() SetInterpolateMode() |

Class usage and Overview
Accumulated bar plot.
Used to create a line plot where each individual data point is the sum of the individual series data points.

Features:

1. Unlimited number of series

See also related classes:
AccBarPlot and LinePlot

Class Methods

function AccLinePlot($plots)
Constructor

Argument | Default | Description
--- | --- | ---
$plots |  | Array of line plots to use

Description
Creates a new accumulated line plot from a number of line plots.
See also
LinePlot::LinePlot

Example

$line1 = new LinePlot($datay1);
$line2 = new LinePlot($datay2);
$aline = array($line1,$line2);
$acclineplot = new AccLinePlot($aline);

function Max()
Return the max value of data points in plot.

Description
Takes into account all series and returns the maximum Y and X values for all the data series. Used internally to determine the autoscaling.
See also
Plot::Max

Example

list($xmax,$ymax) = $acclineplot->Max();

function Min()
Return the min value of all data points in plot.

Description
Takes into account all series and returns the minimum Y and X value. Used internally to determine autoscaling.
See also
BarPlot::Min and Plot::Min

Example

list($xmin,$ymin) = $acclineplot->Min()

function SetInterpolateMode($aIntMode)
Enable interpolate mode

Argument | Default | Description
--- | --- | ---
$aIntMode |  | TRUE=Enable interpolation

Description
When plotting accumulated line plots which have NULL values as data (i.e. '-') they will distort the accumulated plot since they will in effect be interpretated as having value 0. This means that there will be a drop in the plot. The only way to avoid this is to calculate the intermediate value. This can be achieved by calculating a linear interpoaltion for the missing value(s). Calling this method will replace all '-' values with an interpolated value.

Example

$accline->SetInterpolateMode()