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geophys (version 1.3-8)

stress: Stress Box

Description

Display interactive Stress Box illustrating normal and shear stress on an arbitrary plane given a stress tensor.

Usage

stress(PPs = matrix(ncol = 4, nrow = 3), Rview = c(-130, -50), xscale = 100, Stensor = matrix(ncol = 3, nrow = 3))

Arguments

PPs
3Points in 3 by 4 matrix
Rview
Viewing matrix
xscale
arbitrary scale
Stensor
stress tensor

Value

Details

Interactive program to examine stress. To change the plane orientation, click on one of the points and then on a new position along the axis selected.

If a stress tensor is provided, then a second graphics device is required to show the Mohr's circle.

See Also

pstart, PLOTbox, PLOTplane, NORMvec

Examples

Run this code

## Not run: 
# #####   no stress tensor provided => no mohr's circle
# stress()
# 
# #########################  run program with a stress tensor
# Stensor = matrix(c(
# 15, 0, 0,
# 0, 10, 0,
# 0,  0, 5), ncol=3)
# 
# 
# stress(Stensor=Stensor)
# 
# P1 = c(0.2, 1, 1, 0)
# P2 = c(1, 0.1, 1, 0)
# P3 = c(1, 1, 0.4, 0)
# 
#   S = stressSETUP(P1, P2, P3, xscale=30   )
# 
# stress(PPs = S$PPs, Rview =S$Rview,
#      xscale = S$xscale, Stensor=Stensor )
# 
# 
# 
# 
# ## End(Not run)


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