NCEP.Airspeed(RNCEP)
NCEP.Airspeed()所属R语言包:RNCEP
Calculate flow-assistance according to equation 'Airspeed'
计算流量的援助根据等式“空速”
译者:生物统计家园网 机器人LoveR
描述----------Description----------
This function calculates flow-assistance according to equation Airspeed and determines the speed of forward and sideways movement if an animal behaves according to the rules of equation Airspeed.
此函数计算流援助根据等式空速和确定正向和侧向运动的速度,如果一种动物的行为根据方程空速规则。
用法----------Usage----------
NCEP.Airspeed(u, v, direction, airspeed,...)
参数----------Arguments----------
参数:u
A numeric value indicating the U (i.e. zonal or east/west) flow component in meters per second, toward east being positive. Values must describe the direction into which the flow is moving.
的数值U(即纬向或东/西)流组件米每秒,向东为正的。值必须说明的流动方向移动。
参数:v
A numeric value indicating the V (i.e. meridional or north/south) flow component in meters per second, toward north being positive. Values must describe the direction into which the flow is moving.
一个数字值,V(即经向或北/南)流组件米每秒,向北为正的。值必须说明的流动方向移动。
参数:direction
A numeric value indicating a preferred direction of movement in degrees from North.
从北以度表示的最佳运动方向的数值。
参数:airspeed
The airspeed (i.e. speed relative to the flow) of the animal in meters per second.
空速(即相对于流的速度)的动物为米每秒。
参数:...
Any extra arguments passed to the flow-assistance equation.
任何额外的参数传递的流动援助方程。
Details
详细信息----------Details----------
This function calculates flow-assistance and forward and sideways movement according to equation Airspeed. Equation Airspeed stipulates that the animal fully compensates for any lateral drift, altering its heading and groundspeed (i.e. speed relative to the fixed Earth), in order to maintain its direction. If, with the given airspeed, the animal is incapable of maintaining its direction, the equation produces no real solution.
此函数计算流量援助和正向和侧向运动根据方程的空速。方程的空速规定,任何横向漂移的动物完全补偿,改变它的航向与地(即速度相对固定的地球),以保持其direction。如果用给定airspeed,动物是不能保持其的direction,方程产生没有真正的解决方案。
值----------Value----------
A data.frame containing flow-assistance ("fa"), the animal's forward speed ("forward.move" which includes the animal's own airspeed), the animal's sideways speed ("side.move" which includes the animal's own airspeed), the component of the flow parallel to preferred direction of movement("tailwind"), the component of the flow perpendicular to the preferred direction of movement ("sidewind"), the animal's speed relative to the flow ("airspeed"), and the animal's speed relative to the fixed Earth ("groundspeed") each in meters per second, presuming u, v, and airspeed were given in meters per second.
Adata.frame含有流援助(发),动物的前进速度(forward.move其中包括动物的自身空速),动物的侧身速度(的side.move其中包括动物自身的空速)成分,优选(顺风)的运动方向垂直的流动,该组件的优选的运动方向(sidewind),动物的速度相对于流(平行流空速),以及动物的速度相对于固定的地球(地面速度),每个单位为米每秒,假定u,v,和airspeed,以米为单位每秒。
(作者)----------Author(s)----------
Michael U. Kemp <a href="mailto:M.U.Kemp@UvA.nl">M.U.Kemp@UvA.nl</a>
参考文献----------References----------
实例----------Examples----------
library(RNCEP)
## Using NCEP.Airspeed to calculate flow-assistance ##[,#使用NCEP.Airspeed来计算流量的援助,##]
tst <- NCEP.Airspeed(u=-2, v=-1, direction=225, airspeed=12)
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
注1:为了方便大家学习,本文档为生物统计家园网机器人LoveR翻译而成,仅供个人R语言学习参考使用,生物统计家园保留版权。
注2:由于是机器人自动翻译,难免有不准确之处,使用时仔细对照中、英文内容进行反复理解,可以帮助R语言的学习。
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