Ok. But it isn't converting lat\long values to expected path data coordinates I believe.
On Wed, Jan 13, 2016 at 5:37 PM, OmPrakash Muppirala <bigosma...@gmail.com> wrote: > Yes, it is lat and long. Out is the output point which should get updated > during the projection. > > Thanks, > Om > On Jan 13, 2016 3:10 AM, "Deepak MS" <megharajdee...@gmail.com> wrote: > > > Thanks Om. > > > > I tried that library with following code: > > var mc:MercatorProjection = new MercatorProjection(); > > for(var i:int = 0; i < a.length; i++) // a here is array of > > arrays - [ [ 151.25, -33.74 ],[ 151.25, -33.74 ] ......] > > { > > var ltlg:Array = a[i]; > > var p:Point = mc.project(ltlg[0],ltlg[1], new Point()); > > //p.x will always be same as lat value - 151.25 and p.y > > will always be NaN > > > > } > > > > I looked at MercatorProjection.project() method: > > override public function project(lam:Number, phi:Number, out:Point):Point > > { > > if (spherical) { //spherical = false > > out.x = scaleFactor * lam; //scaleFactor = 1 > > out.y = scaleFactor * > Math.log(Math.tan(MapMath.QUARTERPI + > > 0.5 * phi)); > > } else { > > out.x = scaleFactor * lam; > > out.y = -scaleFactor * Math.log(MapMath.tsfn(phi, > > Math.sin(phi), e)); > > } > > return out; > > } > > > > I'm not sure what Iam, phi and out parameters are. I assumed Iam is lat > and > > phi would be lng. out is used to return the value. I don't know why is it > > an input parameter here as out itself is the return value. > > > > Am I passing lat, lng values correctly to project() ? > > > > > > > > > > On Wed, Jan 13, 2016 at 1:09 PM, OmPrakash Muppirala < > bigosma...@gmail.com > > > > > wrote: > > > > > Moving thread to dev@. Users@ in bcc in case someone else is > interested > > > in > > > this. > > > > > > The d in the path node is a stringified set of points which are > connected > > > by lines. M is for moveTo, L is for lineTo and Z signifies closing the > > > path back to the first point. > > > > > > Each country (or region) has its own shape which is denoted by the d > > > string. The series of path objects is sufficient to draw all the > > countries > > > using a stroke and a fill. > > > > > > Looking at your coordinates, it looks like a closed polygon. > > > You might want to try to use Mercator projection to project the lat > long > > > coordinates to cartesian coordinates. > > > Here is a very straightforward implementation of this in AS3: > > > * > > > > > > https://bitbucket.org/gka/as3-proj/src/ec91cdd098a15ab1e2cbf5bbd3a3221a36507685/net/vis4/map/proj/MercatorProjection.as?at=default&fileviewer=file-view-default > > > < > > > > > > https://bitbucket.org/gka/as3-proj/src/ec91cdd098a15ab1e2cbf5bbd3a3221a36507685/net/vis4/map/proj/MercatorProjection.as?at=default&fileviewer=file-view-default > > > >* > > > > > > Basically for each lat/long co-ordinate in your 'coordinates' array, > call > > > MercatorProjection.project(), which should give you a Point object. > Use > > > these series of Points to draw a shape, which represents your > > State/region. > > > > > > Do let me know if you need any further help > > > > > > Thanks, > > > Om > > > On Jan 12, 2016 10:06 PM, "Deepak MS" <megharajdee...@gmail.com> > wrote: > > > > > > > Moving following conversation to this separate thread. > > > > > > > > > > > > > > > > > > http://apache-flex-development.2333347.n4.nabble.com/FlexJS-US-States-Map-example-pure-AS3-td48006.html > > > > > > > > Hi Om, > > > > I had one question. > > > > I could see the following path in the worldmap.xml file: > > > > <path fill="#CEE3F5" stroke="#6E6E6E" stroke-width="0.4" id="UM" > > > > d="M25.4,206.4 L25.4,206.4 L25.3,206.4 L25.4,206.4 Z"> > > > > <desc> > > > > <name>United States Minor Outlying Islands</name> > > > > <labelrank>5</labelrank> > > > > <country-abbrev>U.S. MOI</country-abbrev> > > > > <subregion>Seven seas (open ocean)</subregion> > > > > <region-wb>East Asia & Pacific</region-wb> > > > > <iso-a3>UMI</iso-a3> > > > > <iso-a2>UM</iso-a2> > > > > <woe-id>28289407</woe-id> > > > > <continent>North America</continent> > > > > <hc-middle-x>0.57</hc-middle-x> > > > > <hc-middle-y>0.58</hc-middle-y> > > > > <hc-key>um</hc-key> > > > > <hc-a2>UM</hc-a2> > > > > </desc> > > > > </path> > > > > > > > > What is the path data in there? > > > > > > > > I would be getting the boundary data in form of geojson which would > > have > > > > latitude\longitude points. Something like this: > > > > > > > > { "type": "Feature", "properties": { "BrickCode_": "21000", "State": > > > "NSW", > > > > "ML_Code": "ML108" }, "geometry": { "type": "Polygon", > "coordinates": [ > > > [ [ > > > > 151.25715360000004, -33.743317043500042 ], [ 151.25985827199997, > > > > -33.743840223500001 ], [ 151.26121619200012, -33.74746011849993 ], [ > > > > 151.269228, -33.74990100849999 ], [ 151.26887100800002, > > > -33.757243991500047 > > > > ], [ 151.27524460799998, -33.756977721 ], [ 151.28052790400011, > > > > -33.75872719199981 ], [ 151.27875936, -33.768415808499981 ], [ > > > > 151.27282256000012, -33.767621917999975 ], [ 151.27024985600008, > > > > -33.77462350199994 ], [ 151.27552054400007, -33.779516363499738 ], [ > > > > 151.27530051200017, -33.781854430499834 ], [ 151.26530544000002, > > > > -33.780174667499921 ], [ 151.26095520000001, -33.777029796999898 ], [ > > > > 151.259648416, -33.779054695999776 ], [ 151.25597475200004, > > > > -33.779087477999894 ], [ 151.25556144000006, -33.783829046499761 ], [ > > > > 151.24337900800003, -33.781951999499825 ], [ 151.23829500800002, > > > > -33.778761008499828 ], [ 151.23245721600017, -33.762912705999895 ], [ > > > > 151.23388588800003, -33.754605225500029 ], [ 151.24911699200015, > > > > -33.756704993999904 ], [ 151.24983971200004, -33.752049450499953 ], [ > > > > 151.24830732800024, -33.751826433000019 ], [ 151.24833936000005, > > > > -33.748172997499921 ], [ 151.25159628799997, -33.74994213399998 ], [ > > > > 151.25054374400008, -33.746457899499944 ], [ 151.25377328000013, > > > > -33.746925597999962 ], [ 151.25369952000005, -33.74283635799992 ], [ > > > > 151.25715360000004, -33.743317043500042 ] ] ] } } > > > > > > > > I'm sure that we cannot use lat\lng points directly in path data. > But I > > > > want to know based on what can we convert these data points to path > > data. > > > > > > > > > >