By Deborah Nolan, Duncan Temple Lang
Along with those common abilities, the authors illustrate a number of purposes which are proper to info scientists, reminiscent of interpreting and writing spreadsheet records either in the community and through Google medical doctors, developing interactive and dynamic visualizations, exhibiting spatial-temporal screens with Google Earth, and producing code from descriptions of information buildings to learn and write data. those subject matters show the wealthy probabilities and possibilities to do new issues with those smooth technologies. The ebook comprises many examples and case-studies that readers can use at once and adapt to their very own work. The authors have fascinated about the mixing of those applied sciences with the R statistical computing environment. even if, the information and abilities provided listed here are extra normal, and statisticians who use different computing environments also will locate them appropriate to their work.
Deborah Nolan is Professor of records at collage of California, Berkeley.
Duncan Temple Lang is affiliate Professor of information at college of California, Davis and has been a member of either the S and R improvement teams.
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Additional resources for XML and Web Technologies for Data Sciences with R (Use R!)
Environmental Protection Agency (EPA). 2 Essentials of XML 23
As consumers of data, we work with whatever format the data are made available to us. Features of XML • XML is self-describing in that it can contain the format and structural information needed to properly read and interpret the content. For example, an XML document typically specifies its character encoding in the XML declaration. It can contain a DTD or schema that describes the structure of all documents within that XML vocabulary. For traditional data sets, it can include the missing value identifier, description of its provenance, etc.
Attribute values have a name="value" format and the value must be quoted either with matching single or double quotes, but not mixed. • Attribute names cannot be repeated within a given element (except if they are within different namespaces). • No blank space is allowed between the < character and the tag name. Extra space is allowed before the ending > in the opening and closing tag. The blank space after the element name is to separate the tag from the first attribute, if it is present. • Element and attribute names must begin with an alphabetic character or an underscore _; subsequent characters may include digits, hyphens, and periods.