add docs to newer functions

changelog

CHANGELOG.md

@@ -6,6 +6,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ### Fixed
 * Gracefully handle malformed esri geoms in geojson conversion
 * Revert Windows command line escaping, it was done improperly
+* Always tranform datum for NAD83 exports
 
 ## [2.8.4] - 2015-09-24
 ### Fixed

lib/Exporter.js

@@ -466,6 +466,15 @@ function fixWkt (inWkt, wkid) {
   return wkt
 }
 
+/**
+ * Gets a set of OGR Paramters for an export
+
+ * @param {string} format - the output format
+ * @param {string} inFile - the geojson or vrt to use as a source
+ * @param {string} outFile - the file to write
+ * @param {object} geojson - a geojson object used in the xform
+ * @param {object} options - potentially contains a fields object
+ */
 function getOgrParams (format, inFile, outFile, geojson, options, callback) {
   // escape quotes in file names
   inFile = inFile.replace(/"/g, '"')
@@ -501,6 +510,14 @@ function getOgrParams (format, inFile, outFile, geojson, options, callback) {
   }
 }
 
+/**
+ * Add parameters specific to a csv export
+ *
+ * @param {array} cmd - an array of OGR command parts to modify
+ * @param {object} options - may contain fields
+ * @return {array}
+ * @private
+ */
 function csvParams (cmd, options) {
   var hasPointGeom = options.geometryType === 'Point'
   var fields = options.fields.join('|').toLowerCase().split('|')
@@ -512,6 +529,14 @@ function csvParams (cmd, options) {
   return cmd
 }
 
+/**
+ * Add parameters specific to a csv export
+ *
+ * @param {string} cmd - an array of OGR command parts to modify
+ * @param {object} options - may contain a wkid or wkt
+ * @param {function} callback - calls back back with a modified command array or an error
+ * @private
+ */
 function shapefileParams (cmd, options, callback) {
   // make sure geometries are still written even if the first is null
   cmd.push('-nlt ' + options.geometryType.toUpperCase())
@@ -530,6 +555,11 @@ function shapefileParams (cmd, options, callback) {
   }
 }
 
+/**
+ * Adds final parameters to the OGR function call
+ * @param {array} cmd - an array of OGR command parts to modify
+ * @return {string} the final OGR command
+ */
 function finishOgrParams (cmd) {
   cmd.push('-update')
   cmd.push('-append')
@@ -539,6 +569,12 @@ function finishOgrParams (cmd) {
   return cmd.join(' ')
 }
 
+/**
+ * Gets projection information for a shapefile exprot
+ * @param {object} options - contains info on spatial reference, wkid and wkt
+ * @param {function} callback - calls back with an error or wkt
+ * @private
+ */
 function addProjection (options, callback) {
   // if there is a passed in WKT just use that
   if (!options.sr) options.sr = {}