**Data Entry**

The data is a table of variable columns, and the columns are separated by at least 1 space or tab.

Each row represents data from each calculations. Rows may have different number of columns

The columns are x and y coordinates, as in x1 y1 x2 y2 x3 y3 and so on.

The x values must be in sequence and with increasing values

There must therefore be an even number of columns to match the x and y pairs

**Click button to run example data, or enter your own data and click button**

This page provides a calculation for the area under a set of coordinates, sometimes called Area Under the Curve (AUC)

The area is calculated using 3 common models of AUC, as shown in the diagram above and to the right.

- The most commonly used model is the area above the line y=0. An example is a measurement of blood drug concentration (y value) over time after administration (x value), to estimate its biological activity
- Another common model is to use the first y value to draw the baseline, so that the area is that above this value. An example
is the estimation of glucose tolerance, where the area above the fasting blood level is of interest
- The two models calculates the area above the line (blue area) as positive value, and area below the line (red area) as negative
values, so that the final area is the difference (blue area - red area).
- The third model estimates the total positive area, and uses the minimum y value is the dataset as the baseline.