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Add polygon coordinates via dynamic variables

Question asked by jonczerniak on Oct 21, 2015

Hi everybody!

 

I have a function which takes the XY coordinates from a point layer and then passes those coordinates to a couple of variables.  Those values are then assigned to other values which compute 4 coordinate pairs which are meant to be used as a list of coordinates to a create polygon via the esri/geometry/Polygon module.

 

Passing the values works like a charm and the additional variables are all defined.  In fact the entire code runs, but it doesn't produce the desired results which is a square. 

 

Side note: I know it's the variables because if I assign some hard numeric values to the addPoly function and not the variables the desired polygon will be produced.  Thanks for your time!

 

Cz

 

function addPoly(){

        //assign values to the square coordinates

        var x1 = Number(xpoint + 201.168);

        var y1 = Number(ypoint + 201.168);

        var x2 = Number(xpoint + 201.168);

        var y2 = Number(ypoint - 201.168);

        var x3 = Number(xpoint - 201.168);

        var y3 = Number(ypoint - 201.168);

        var x4 = Number(xpoint - 201.168);

        var y4 = Number(ypoint + 201.168);

         

     //check to see if values were assigned  

     alert("Your values are " + x1 + " " + y1);

      

       

        //add polygon symbology

        var polySymbol = new SimpleFillSymbol().setColor(null).outline.setColor("blue");

        var polyLineSymbol = new SimpleLineSymbol();

       

     

        var polygon = new Polygon({

            "rings": [

              [

                [y1, x1],

                [y2, x2],

                [y3, x3],

                [y4, x4],

                [y1, x1]

               

              ]

            ],

            "spatialReference": {

              "wkid": 102100

            }

          });

          alert("graphic should add next");

        map.graphics.add(new Graphic(polygon, polySymbol));

      };

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