yawAngle: Calculate yaw (in degrees) from XY coordinate data

In MorphoFun/kraken: Analyses for bone biomechanics

Calculate yaw (in degrees) from XY coordinate data

Description

Calculates the yaw angle (in degrees), formed by two segments produced by the X and Y coordiantes of two points.

Usage

yawAngle(P1, P2)

Arguments

P1	A data.frame of numeric values containing the X and Y coordinate data, respectively, for the first point (e.g, point along the midline)
P2	A data.frame of numeric values containing the X and Y coordinate data, respectively, for the second point (e.g., pelvic girdle)

Details

These procedures follow the methodology used in Kawano and Blob (2013) and Kawano et al. 2016 to calculate angles formed about the limb joints in animals.

References

Kawano SM, Blob RW. 2013. Propulsive forces of mudskipper fins and salamander limbs during terrestrial locomotion: implications for the invasion of land. Integrative and Comparative Biology 53(2): 283-294. https://academic.oup.com/icb/article/53/2/283/806410/Propulsive-Forces-of-Mudskipper-Fins-and

Kawano SM, Economy DR, Kennedy MS, Dean D, Blob RW. 2016. Comparative limb bone loading in the humerus and femur of the tiger salamander Ambystoma tigrinum: testing the "mixed-chain" hypothesis for skeletal safety factors. Journal of Experimental Biology 219: 341-353. http://jeb.biologists.org/content/219/3/341

Examples

P1 <- data.frame(X = c(0.004978444,
                    0.005226819,
                    0.005483069,
                    0.005747358,
                    0.006019848,
                    0.006300701,
                    0.006590101,
                    0.00688825,
                    0.007195354, 
                    0.007511617),
              Y = c(-0.09374413,
                    -0.09380451,
                    -0.09382974,
                    -0.09382203,
                    -0.09378361,
                    -0.09371668,
                    -0.09362362,
                    -0.09350694,
                    -0.09336917, 
                    -0.09321286
              ))

P2 <- data.frame(X = c(0.001005251,
                    0.001195392,
                    0.001406054,
                    0.001636047,
                    0.001884185,
                    0.002149271,
                    0.002429912,
                    0.002724486,
                    0.003031363,
                    0.003348911),
              Y = c(-0.09343679,
                    -0.09347614,
                    -0.09350069,
                    -0.09350983,
                    -0.09350293,
                    -0.09347937,
                    -0.09343846,
                    -0.09337947,
                    -0.09330165,
                    -0.09320426
              ))

Yaw <- yawAngle(P1, P2)

MorphoFun/kraken documentation built on July 2, 2022, 1:13 p.m.