topic Re: how to remove graphic from view using attribute in 4.6 in ArcGIS JavaScript Maps SDK Questions

how to remove graphic from view using attribute in 4.6

LoriEmerson_McCormack — Tue, 16 Jan 2018 17:00:45 GMT

How can I remove a graphic using an attribute? I am able to add the graphic.

view.graphics.graphics.length is invalid. I am having a hard time finding what I need in the view object because of all the _proto_ levels.

//*************************************************//

//** show Graphic for selected feature **//

//*************************************************//

function showGraphic(myID) {

if (arrayIdFeatures.length) {

for (i = 0; i < arrayIdFeatures.length; i++) {

if (arrayIdFeatures.attributes['Legend ID'] == myID) {

var pointAtt = {

"LegendID": arrayIdFeatures.attributes['Legend ID']

};

var pointGeography = arrayIdFeatures.geometry;

var pointGraphic = new Graphic({

geometry: arrayIdFeatures.geometry,

symbol: pointSymbol,

attributes: pointAtt

});

view.graphics.add(pointGraphic);

} // end if stmt

} // end for stmt

} //end if stmt

} // end function showGraphic()

//*************************************************//

//** remove Graphic for selected feature **//

//*************************************************//

function removeGraphic(myID) {

if (view.graphics.graphics.length) {

for (i = 0; i < view.graphics.graphics.length; i++) {

if (view.graphics.graphics.attributes.LegendID == myID) {

view.graphics.remove(view.graphics.graphics);

} // end if stmt

} // end for stmt

} //end if stmt

} // end function removeGraphic()

Re: how to remove graphic from view using attribute in 4.6

RobertScheitlin__GISP — Sat, 11 Dec 2021 13:36:56 GMT

Lori,

They way you are working with collections is incorrect. Collections are a bit different than arrays.

//*************************************************//
//** remove Graphic for selected feature **//
//*************************************************//
function removeGraphic(myID) {
   if (view.graphics.graphics.length) {
      for (i = 0; i < view.graphics.length; i++) {
         if (view.graphics.getItemAt(i).attributes.LegendID == myID) {
             view.graphics.remove(view.graphics.getItemAt(i));
         } // end if stmt
      } // end for stmt
   } //end if stmt
} // end function removeGraphic()‍‍‍‍‍‍‍‍‍‍‍‍

Re: how to remove graphic from view using attribute in 4.6

LoriEmerson_McCormack — Tue, 16 Jan 2018 17:22:02 GMT

Robert,

Thanks for the insight about Collections. I will learn more about it.

Using view.graphics.length worked. Also, using view.graphics.getItemAt(I).attributes.<custom attribute> worked. Brilliant. Thanks!!