With the exception of vertical deflection, line plots show positive results plotted above the axis line. This ensures that plots do not appear upside down. For axis lines that are parallel to the y-axis (and hence have no "above the axis line" direction), line plots show positive results to the left of the axis line.

Perspectives are plotted with positive results in the global z-direction (what is considered positive is dependent upon the sign convention of the Value Plotted). For example, a perspective of deflection shows positive deflection up.

You cannot change the sign of the coordinates’ axes.