![[R logo]](../../../doc/html/Rlogo.svg)
![[Up]](../../../doc/html/left.jpg)
![[Top]](../../../doc/html/up.jpg)
| insol-package | Solar Radiation |
| aspect | Aspect or orientation of the slope |
| cgrad | Normal vector to every grid cell in a DEM |
| daydoy | Dates to day of the year |
| daydoy-method | Dates to day of the year |
| daylength | Length of daylight |
| declination | Declination |
| degrees | Radians to degrees |
| doshade | Cast shadows |
| doyday | Day of the year to date |
| eqtime | Equation of time |
| GCdistance | Great circle distance |
| hillshading | Intensity of illumination over a surface |
| hourangle | Hour angle |
| insol | Solar Radiation |
| insolation | Direct and diffuse solar radiation. |
| JD | Julian Day from POSIXct |
| JDymd | Julian Day from yyyy, mm, dd |
| meteoandes | Mountain meteorological data |
| normalvector | Vector normal to surface |
| p2rho | Air pressure to density |
| radians | Degrees to radians |
| rh2sh | Relative humidity to specific humidity |
| slope | Slope of grid cells in a DEM |
| sunpos | Azimuth and zenith of the Sun |
| sunr | Earth radius vector |
| sunvector | Solar vector |
| wvapsat | Saturation pressure of water vapor |
| z2p | Altitude to pressure |