exsurf
Example Surface for 3-D Plots
Description
The exsurf data frame has 1271 rows and 3 columns. It is an example
surface for use in demonstrating the functionality of 3-D plots over a
regular grid.
This data frame contains the following columns:
Arguments
| V1 |
A vector of 31 values starting at -2 and incrementing by 0.13. These values
are replicated 41 times.
|
| V2 |
A vector of 41 values starting at -2 and incrementing by 0.1. These values
are replicated 31 times.
|
| V3 |
The mathematical function:
cos(V1+V2)*cos(3*V1-V2) + cos(V1-V2)*sin(V1+3*V2) + 5*exp((-V1*V1 - V2*V2)/8)
|
Examples
data(exsurf)
summary(exsurf)
# wireframe(V3~V1*V2, exsurf)
# levelplot(V3~V1*V2, exsurf)