turf - npm Package Compare versions

Comparing version 0.0.79 to 0.0.80

lib/union.js

 // look here for help http://svn.osgeo.org/grass/grass/branches/releasebranch_6_4/vector/v.overlay/main.c
 //must be array of polygons
+
+// depend on jsts for now https://github.com/bjornharrtell/jsts/blob/master/examples/overlay.html
+
+var jsts = require('jsts')
+var t = {}
+t.featurecollection = require('./featurecollection')
+
+module.exports = function(polys1, polys2, done){
+  var reader = new jsts.io.GeoJSONReader()
+  var a = reader.read(JSON.stringify(polys1.features[0].geometry))
+  var b = reader.read(JSON.stringify(polys2.features[0].geometry))
+  var union = a.union(b);
+  var parser = new jsts.io.GeoJSONParser()
+  union = parser.write(union)
+  union = t.featurecollection([union])
+  done(null, union)
+}

package.json

 {
   "name": "turf",
-  "version": "0.0.79",
+  "version": "0.0.80",
   "description": "a node.js library for performing geospatial operations with geojson",
@@ -5,0 +5,0 @@ "main": "index.js",

README.md

@@ -72,2 +72,4 @@ turf
 - [aggregate](#aggregate)
+- [union](#union)
+- [intersect](#intersect)
 
@@ -83,4 +85,2 @@ **Planned Features**
 - area
-- intersect
-- union
 - erase
@@ -832,2 +832,38 @@ - smooth
 
+###union
+
+Calculates the union of two polygon features or feature collections.
+
+```javascript
+var t = require('turf')
+
+t.load(__dirname + '/testIn/Intersect1.geojson', function(err, polys1){
+  t.load(__dirname + '/testIn/Intersect2.geojson', function(err, polys2){
+    t.union(polys1, polys2, function(err, unioned){
+      if(err) throw err
+      console.log(unioned)
+    })
+  })
+})
+```
+
+
+###intersect
+
+Calculates the intersection of two polygon features or feature collections.
+
+```javascript
+var t = require('turf')
+
+t.load(__dirname + '/testIn/Intersect1.geojson', function(err, polys1){
+  t.load(__dirname + '/testIn/Intersect2.geojson', function(err, polys2){
+    t.intersect(polys1, polys2, function(err, intersected){
+      if(err) throw err
+      console.log(intersected)
+    })
+  })
+})
+```
+
+
 - - -
@@ -834,0 +870,0 @@

test/intersect.js

@@ -1,8 +0,30 @@
-var t = require('../lib/intersect')
+var t = require('../index'),
+    should = require('should'),
+    fs = require('fs')
 
 describe('intersect', function(){
-  xit('should ', function(done){
-    throw new Error('not implemented')
-    done()
+  it('should return the overlap of two polygons', function(done){
+    t.load(__dirname + '/testIn/Intersect1.geojson', function(err, polys1){
+      t.load(__dirname + '/testIn/Intersect2.geojson', function(err, polys2){
+        t.intersect(polys1, polys2, function(err, intersected){
+          if(err) throw err
+          intersected.features[0].should.be.ok
+          fs.writeFileSync(__dirname + '/testOut/intersected1.geojson', JSON.stringify(intersected))
+          done()
+        })
+      })
+    })
   })
+  it('should return the overlap of two polygons', function(done){
+    t.load(__dirname + '/testIn/Intersect1.geojson', function(err, polys1){
+      t.load(__dirname + '/testIn/Intersect3.geojson', function(err, polys2){
+        t.intersect(polys1, polys2, function(err, intersected){
+          if(err) throw err
+          intersected.features[0].should.be.ok
+          fs.writeFileSync(__dirname + '/testOut/intersected2.geojson', JSON.stringify(intersected))
+          done()
+        })
+      })
+    })
+  })
 }) 

test/union.js

@@ -1,8 +0,18 @@
-var t = require('../lib/union')
+var t = require('../index'),
+    should = require('should'),
+    fs = require('fs')
 
 describe('union', function(){
-  xit('should ', function(done){
-    throw new Error('not implemented')
-    done()
+  it('should return the union of two polygons', function(done){
+    t.load(__dirname + '/testIn/Intersect1.geojson', function(err, polys1){
+      t.load(__dirname + '/testIn/Intersect2.geojson', function(err, polys2){
+        t.union(polys1, polys2, function(err, unioned){
+          if(err) throw err
+          unioned.features[0].should.be.ok
+          fs.writeFileSync(__dirname + '/testOut/unioned.geojson', JSON.stringify(unioned))
+          done()
+        })
+      })
+    })
   })
-})
+}) 

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Improved metrics

Total package byte prevSize

3248541

increased by47.6%

Number of package files

216

increased by3.35%

Lines of code

21407

increased by38.32%

Number of lines in readme file

874

increased by4.3%

Worsened metrics

Number of low supply chain risk alerts

28

increased by7.69%

No dependency changes