| When the applet loads, a menubar and blank x- and y-axes are displayed. The menubar is shown at left. The applet requires at least Java JRE 1.4 (aka Java 4) to run; if it does not load, this is a likely source of the problem. The JRE 1.4 plugin is available for most platforms, including Windows, Linux, and Mac.|
The menubar provides means to enter the coordinates of any number of nodes, set a predefined pattern of nodes, remove nodes one-by-one or all at once, choose for which node the shape function should be calculated, choose a shape function formulation, and calculate the value of the shape function at any given point inside the element. There are also toggle buttons to choose whether to display a plot, the axes, and node labels, and whether to allow node placement by clicking in the plot area.