lib/toxi/geom/mesh/meshCommon.js
function(x,z,h){
				var index = this._getIndex(x,z);
				this.elevation[index] = h;
				this.vertices[index].y = h;
				return this;
			}
function(x,z,h){
				var index = this._getIndex(x,z);
				this.elevation[index] = h;
				this.vertices[index].y = h;
				return this;
			}
function ( x , z , h ) { var index = this . _getIndex ( x , z ) ; this . elevation [ index ] = h ; this . vertices [ index ] . y = h ; return this ; }
Sets the elevation for a single given grid cell.
@param {Number} x
@param {Number} z
@param {Number} h new elevation value
@return itself
Sets the elevation for a single given grid cell .