dwtkns

library(XML)

getMARCField = function(marc_doc, tag, code) { 
    xpath = paste("/m:collection/m:record/m:datafield[@tag='", tag, "']/m:subfield[@code='", code, "']", sep="")
    return(xpathApply(marc_doc, xpath, namespaces=c("m"), xmlValue)) 
}

vs = xmlRoot(xmlParse('vail-first-3500.xml'))
field100a = getMARCField(vs, '100', 'a')

dwtkns

View this code at http://livecoding.io/4730760

dwtkns

View this code at http://livecoding.io/4730608

dwtkns

Extent indicator globe using d3.geo.orthographic and radial gradients.

Slippy map code from:
http://bl.ocks.org/3943330 by tmcw
http://bl.ocks.org/4132797 by mbostock

Map tiles from Stamen

dwtkns

Faux-3d SVG globe using d3.geo.orthographic and a few radial gradients. Labels offset or hidden based on radians from current map center to enhance the effect.

Uncomment svg.append("g").attr("class","countries") for hover-able country outlines.

dwtkns

View this code at http://livecoding.io/4620198

dwtkns

View this code at http://livecoding.io/4612667

dwtkns

View this code at http://livecoding.io/4608772

dwtkns

View this code at http://livecoding.io/4608246

dwtkns

View this code at http://livecoding.io/4608060