Tissot Indicatrix Options
menu ("Map distortion") which lets you put a Tissot indicatrix and the h & k
parameters at any point on the map by double clicking.
|Option on the
Map Overlays to put indicatrices on
a map in a regular pattern.
Also available from Cartography, Tissot indicatrix
|Spacing of indicatrices for
Map Overlays option:
Pick the base diameter of the indicatrices, and the color and line width.
Show h and k (stretching along meridians and parallels), and the number of decimals. If you need to see very precise differences, you need more decimal places. Some skewed projections (e.g. Lambert azimuthal equal area or orthographic) use h' and k' because the stretching is not along parallels and meridians.
Tissot indicatrix theory
last revision 5/19/2009