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Ebooks on agriculture and the applied life sciences from CAB International
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This book takes a simple step-by-step approach to give a good grounding in the use of R for undergraduate/beginning postgraduate biology students. R is a freely available, open-source statistical programming environment which provides powerful statistical analysis tools and graphics outputs. This...
This chapter presents the basics for handling text, numbers and simple data files. It focuses on basic R features, commas, brackets and concatenation, colon character, raise to the power symbol, exiting from R, and help pages.
R is an open-source statistical environment modelled after the previously widely used commercial programs S and S-Plus, but in addition to powerful statistical analysis tools, it also provides powerful graphics outputs. In addition to its statistical and graphical capabilities, R is a programming...
R is a programming language that has a huge range of inbuilt statistical and graphical functions. Firstly, this chapter shows how R works by talking you through a number of exercises, often producing graphical output, so you will get to know how to write simple code and become familiar with some of ...
R is an open-source statistical environment modelled after the previously widely used commercial programs S and S-Plus, but in addition to powerful statistical analysis tools, it also provides powerful graphics outputs. R can be used for some quite fast modelling jobs but its speed is nowhere near...
There are a number of in-built probability distributions, including uniform, binomial, negative binomial, normal, log-normal, logistic, exponential, Chisquared, Poisson, gamma, Fisher's F, Student's t, Weibull and others. These are used to generate p-values from test statistics, to generate random...
The purpose of this chapter is to present Costa Rica as a model of sustainable tourism development that successfully supports the wellbeing of remote rural communities. The shifts in awareness that led Costa Rica to value and conserve its natural resources are thus discussed, as well as the...
The first part of this chapter summarizes how swiddening, also called shifting agriculture and slash-and-burn agriculture, may still be a viable and relevant form of livelihood and food production in some locations and situations, particularly in Southeast Asia. In many parts of the world, shifting ...
This chapter initially provides a review of computer structure and operational systems, but more importantly provides coverage of farm computer uses that might be helpful to a farmer. This latter aspect is about the software available. Areas where application software is available are outlined,...
This chapter describes the use of mathematical programming for developing farm-level models that are useful for agricultural policy assessment. It focuses on the technique most frequently used in agricultural policy evaluation in the EU, positive mathematical programming (PMP). Unlike other...