Images are cropped to a circle with a transparent background. The function takes a
  vector of images, either local or from a link, and circle crops the image. Paths to the
  cropped image are returned for plotting with 'ggplot2'. Also includes cropping to a hexagon,
  heart, parallelogram, and square.

Provides peruvian agricultural production data from the Agriculture Minestry of Peru (MINAGRI). The first version includes
             6 crops: rice, quinoa, potato, sweet potato, tomato and wheat; all of them across 24 departments. Initially,  in excel files which has been transformed
             and assembled using tidy data principles, i.e. each variable is in a column, each observation is a row and each value is in a cell.
             The variables variables are sowing and harvest area per crop, yield, production and price per plot, every one year, from 2004 to 2014.

Estimation of crop water demand can be processed via this package. As example, the data  from 'TerraClimate' dataset (<https://www.climatologylab.org/terraclimate.html>) calibrated with automatic weather stations of National Meteorological Institute of Brazil is available in a coarse spatial resolution to do the crop water demand. However, the user have also the option to download the variables directly from 'TerraClimate' repository with the download.terraclimate function  and access the original 'TerraClimate' products. If the user believes that is necessary calibrate the variables, there is another function to do it. Lastly, the estimation of the crop water demand present in this package can be run for all the Brazilian territory with 'TerraClimate' dataset.

Calculate agrometeorological variables for crops
             including growing degree days (McMaster, GS & Wilhelm, WW
             (1997) <doi:10.1016/S0168-1923(97)00027-0>), cumulative
             rainfall, number of stress days and cumulative or mean
             radiation and evaporation. Convert dates to day of year
             and vice versa. Also, download curated and interpolated
             Australian weather data from the Queensland Government
             DES longpaddock website
             <https://www.longpaddock.qld.gov.au/>. This data is
             freely available under the Creative Commons 4.0 licence.