# Graphing

There are three types of graphs: function graphs, scatter plots and bar graphs. Each graph includes the ability to zoom, pan and trace. In addition function graphs can evaluate at a desired point.Some templates, such as Summary Data, Two-Variable Statistics, and Savings, include graphing. Others, such as Function Graph, are designed specifically for that purpose. Enter in the appropriate equations or data, calculate, then select the graph row to see data visually.

## Zoom and Pan

To zoom, pinch or expand with two fingers on the screen. To pan, drag a finger across the screen. Bar graphs require that you start dragging in a location where the graph is not drawn.## Tracing and Evaluating

To trace a function graph, select and hold for a second until the trace box and line appear then drag. To trace a scatter plot, select and hold near the desired data point. For bar graphs, select a bar. To evaluate a function graph, select "Eval" on the toolbar and enter in the x data point.## Window

There are two methods for drawing the default window coordinates. The first, or squared mode, is that powerOne takes your x-minimum and x-maximum data (set in the template or defined by the template author) and calculates the minimum and maximum y points. It then uses that data to ensure that the x-scale and y-scale are the same (or squared).The second approach, or standard mode, is to treat x-minimum and x-maximum as the minimum and maximum window coordinates and draw as much y as possible.

Function graphs default to squared but can be changed by selecting the gear. Bar graphs are set to standard and cannot be changed. Scatter plots default to standard but can be changed by selecting the gear button.