The **Logarithmic
X Axis** button will toggle a log axis for the X variable.

The **Logarithmic
Y Axis** button will toggle a log axis for the Y variable.

The**
Logarithmic Z or Y2 Axis** button will toggle a log axis for the Z variable, if a 3D plot, or
the second (Y2) axis if a 2D plot. For 2D plots with no second Y axis, including contour plots, this button
will be grayed.