What is a cross plot?

A cross plot is a graphical representation used in various fields, such as geology and geophysics, to compare two different sets of data against each other. In the context of petrophysics, for example, it often displays the relationship between two properties, like porosity and permeability, to identify patterns or correlations. By plotting one variable on the x-axis and another on the y-axis, cross plots can help visualize trends, anomalies, or clusters within the data, aiding in interpretation and decision-making.