monitoring: Performs the monitoring component of a r2dRue analysis as...
In r2dRue: 2d Rain Use Efficience model

Description Usage Arguments Details Value Author(s) References See Also

Compute a stepwise regression of vegetation index over aridity index and year order-number. As many points as available hydrological years are made from annual means of these variables, which are first computed from their respective time-series. The results are then saved to corresponding raster files. A batch operation is parameterised from the r2dRue current memory settings (see read2dRfile and showInfo). Rudimentary bars show the computation in progress.

1	monitoring(o)

`o`	A r2dRue Object

The following r2dRue functions are involved in this computation. Local parameters are left with their respective default values, except those specified in the parameters file as displayed by showInfo:

The following raster files are created resulting from the monitoring operation. They belong to the SpatialGridDataFrame class

`index`	individual label for each grid cell
`effect_time`	rate of change in std.dev. of vegetation index per one std.dev. of time; zero if non significant
`effect_arid`	rate of change in std.dev. of vegetation index per one std.dev. of aridity; zero if non significant
`veg_response`	significant response of vegetation index to time (1), aridity (2), both (3) or none (4)
`ta_single`	single correlation coefficient of time and aridity; zero if non significant
`tv_single`	single correlation coefficient of time and vegetation index; zero if non significant
`av_single`	single correlation coefficient of aridity and vegetation index; zero if non significant
`viMe yyyy`	mean annual vegetation index corresponding to year yyyy
`aiMeyyyy`	mean annual aridity index corresponding to year yyyy
`timeyyyy`	dummy raster containing year yyyy in each grid cell

Gabriel del Barrio, Marieta SanJuan & Alberto Ruiz

del Barrio, G., Puigdefabregas, J. Sanjuan, M.E., Stellmes, M. & Ruiz, A. (2010). Assessment and monitoring of land condition in the Iberian Peninsula, 1989-2000. Remote Sensing of Environment, 114: 1817-1832 http://dx.doi.org/10.1016/j.rse.2010.03.009

Sokal, R. R., & Rohlf, F. J. (1995). Biometry. New York: W.H. Freeman and Co.

regStepRaster, editr2dRfile, readr2dRfile, showInfo

r2dRue documentation built on May 2, 2019, 4:50 p.m.