Programming Web Graphics with Perl and GNU Softwar

Name

new( ) — create a new graph object

Synopsis

new GIFgraph::bars(width, height)
new GIFgraph::lines(width, height)
new GIFgraph::points(width, height)
new GIFgraph::linespoints(width, height)
new GIFgraph::area(width, height)
new GIFgraph::pie(width, height)

The new( ) method creates a new graph object. The width and height parameters are optional; if they are not set, the graph is created with a default width of 400 pixels and height of 300 pixels. GIFgraph implements six different kinds of graphs:

GIFgraph::bars

A graph where the data is represented as colored bars (Figure 6.3).

Figure 6-3. A bars graph

GIFgraph::lines

A graph with lines connecting the data points (Figure 6.4). Use a linespoints graph to plot the data points as well as the lines.

Figure 6-4. A lines graph

GIFgraph::points

A graph with only the data points plotted (Figure 6.5).

Figure 6-5. A points graph

GIFgraph::linespoints

A graph with lines connecting visible data points (Figure 6.6).

Figure 6-6. A linespoints graph

GIFgraph::area

A graph with lines connecting the data points and the area under the line filled with a color (