why feature hides in map after move it?

Question

I have a function that allows move a point by angle and distance

The problem is that after move the point, this doesn't show in map:

Sometimes the line also disappears

This is a summary of the code to update the coordinates of the point:

loFL = goMap.getLayer("points_layer");
//take the first graphic (The point) and update            
loFL.graphics[0].geometry.x = newX;
loFL.graphics[0].geometry.y = newY;                   
loFL.redraw();

PD: 'loFL' it's a FeatureLayer created with a FeatureCollection

Answer 1

It looks like your code:

loFL = goMap.getLayer("points_layer");
//take the first graphic (The point) and update            
loFL.graphics[0].geometry.x = newX;
loFL.graphics[0].geometry.y = newY;                   
loFL.redraw();

Should indeed work fine for Feature Layers created with a FeatureCollection. Code example here.