diff options
Diffstat (limited to 'resources')
| -rw-r--r-- | resources/map.js | 81 |
1 files changed, 58 insertions, 23 deletions
diff --git a/resources/map.js b/resources/map.js index acb1322..3369656 100644 --- a/resources/map.js +++ b/resources/map.js @@ -1,36 +1,49 @@ function getDataURIForRegion(self, region) { var dataURI = "data:text/csv,"; - dataURI += "Name,Size of Catchment Area,Population of Catchment Area%0A"; + dataURI += "Name,Size of Catchment Area,Population of Catchment Area,Average Distance to Health Post,Max Distance to the Health Post%0A"; _.each(self.amenities["hospital"], function(amenity) { - var catchmentArea = self.catchmentAreas[amenity.id]; - var settlements = catchmentArea.settlements; + var catchmentArea = self.catchmentAreas[amenity.id]; + var settlements = catchmentArea.settlements; - var format = new OpenLayers.Format.GeoJSON; + var format = new OpenLayers.Format.GeoJSON; - var sumOfDistances = 0; - var maxDistance = 0; + var sumOfDistances = 0; + var maxDistance = 0; - var healthCenterGeo = format.parseGeometry(catchmentArea.geometry); + var Geographic = new OpenLayers.Projection("EPSG:4326"); + var Mercator = new OpenLayers.Projection("EPSG:900913"); - _.each(catchmentArea.settlements, function (settlement) { - var settlementGeo = format.parseGeometry(catchmentArea.geometry); - }); + var amenityPoint = format.parseGeometry(amenity.geometry); + if (amenity.geometry.type == "Point") { + //amenityPoint = new OpenLayers.Geometry.Point(amenity.geometry.coordinates[0], amenity.geometry.coordinates[1]).transform(Geographic, Mercator); + } else { // Its a polygon + amenityPoint = amenityPoint.getCentroid(); + } + + _.each(catchmentArea.settlements, function (settlement) { + var settlementGeo = format.parseGeometry(settlement.geometry); - var openLayersGeo = format.parseGeometry(catchmentArea.geometry); + var distance = settlementGeo.distanceTo(amenityPoint); + sumOfDistances += distance; + if (distance > maxDistance) + maxDistance = distance; + }); - var areaInSquareMeters = openLayersGeo.getGeodesicArea(); + var openLayersGeo = format.parseGeometry(catchmentArea.geometry); - var population = 0; - var numberOfSettlementsWithoutPopulation = 0; + var areaInSquareMeters = openLayersGeo.getGeodesicArea(); - _.each(settlements, function(settlement) { - if (typeof settlement.properties.population != "undefined") { - population += parseInt(settlement.properties.population); - }}); + var population = 0; + var numberOfSettlementsWithoutPopulation = 0; - dataURI += amenity.properties["name"] + "," + areaInSquareMeters +"," + population +"%0A"; - }); + _.each(settlements, function(settlement) { + if (typeof settlement.properties.population != "undefined") { + population += parseInt(settlement.properties.population); + }}); + + dataURI += amenity.properties["name"] + "," + areaInSquareMeters +"," + population + "," + (sumOfDistances/settlements.length) + "," + maxDistance + "%0A"; + }); return dataURI; } @@ -201,6 +214,28 @@ function displayMap(self, map) { var format = new OpenLayers.Format.GeoJSON; var openLayersGeo = format.parseGeometry(catchmentArea.geometry); + var sumOfDistances = 0; + var maxDistance = 0; + + var Geographic = new OpenLayers.Projection("EPSG:4326"); + var Mercator = new OpenLayers.Projection("EPSG:900913"); + + var featurePoint = format.parseGeometry(feature.geometry); + if (feature.geometry.type == "Point") { + //amenityPoint = new OpenLayers.Geometry.Point(amenity.geometry.coordinates[0], amenity.geometry.coordinates[1]).transform(Geographic, Mercator); + } else { // Its a polygon + featurePoint = featurePoint.getCentroid(); + } + + _.each(catchmentArea.settlements, function (settlement) { + var settlementGeo = format.parseGeometry(settlement.geometry); + + var distance = settlementGeo.distanceTo(featurePoint); + sumOfDistances += distance; + if (distance > maxDistance) + maxDistance = distance; + }); + var areaInSquareMeters = openLayersGeo.getGeodesicArea(); var areaString = areaInSquareMeters.toFixed(2) + "m" + "2".sup(); if (areaInSquareMeters > 1000000) { @@ -213,7 +248,7 @@ function displayMap(self, map) { number_of_settlements: "Unknown", population: "Unknown", greatest_settlement_dist: "Unknown", - average_settlement_dist: "Unknown" + average_settlement_dist: "Unknown" } } else { var population = 0; @@ -237,8 +272,8 @@ function displayMap(self, map) { areaProperties = { area: areaString, number_of_settlements: settlements.length, population: population, - greatest_settlement_dist: "Unknown", - average_settlement_dist: "Unknown" + greatest_settlement_dist: maxDistance, + average_settlement_dist: (sumOfDistances/catchmentArea.settlements.length) } } |