I am trying to add FEMA map service
FEMA: Mapping Information Platform: NOPAGETAB_NFHLWMS
Index number 28 from above link.
I am doing this:
I know there is an scale of 50,000 but no matter my zoom it does not render in my map. I dont see any errors associated with this in the console
Thoughts?
var FloodZonelayer = new FeatureLayer("https://hazards.fema.gov/gis/nfhl/rest/services/public/NFHL/MapServer/28", {
mode: FeatureLayer.MODE_SNAPSHOT,
visible: true
});
legendLayers.push({ layer: FloodZonelayer, title: 'Flood Zones' });
map.addLayers([FloodZonelayer]);
Solved! Go to Solution.
Jay,
Well you had a couple of issues in your code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<title>FeatureLayer</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.23/esri/css/esri.css">
<script src="https://js.arcgis.com/3.23/"></script>
<style>
html, body, #map {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}
</style>
<script>
require([
"esri/map",
"esri/layers/ArcGISDynamicMapServiceLayer",
"esri/layers/ImageParameters",
"dojo/domReady!"
],
function(
Map,
ArcGISDynamicMapServiceLayer,
ImageParameters
) {
var map = new Map("map", {
basemap: "gray",
center: [-82.44109, 35.6122],
zoom: 17
});
var imageParameters = new ImageParameters();
imageParameters.format = "PNG32"; //set the image type to PNG24, note default is PNG8.
imageParameters.layerIds = [28];
imageParameters.layerOption = ImageParameters.LAYER_OPTION_SHOW;
var FloodZonelayer = new ArcGISDynamicMapServiceLayer("https://hazards.fema.gov/gis/nfhl/rest/services/public/NFHL/MapServer", {
"opacity" : 0.5,
"imageParameters" : imageParameters
});
map.addLayer(FloodZonelayer)
});
</script>
</head>
<body>
<div id="map"></div>
</body>
</html>
Jay,
FEMA seems to be having issue with that Map Service. All requests to it are failing.
OK thank you....was confused because I could open the Rest Endpoint in Chrome and query it and return data in the browser
Jay,
My queries have all failed and the links on the REST page to view the Map Service in the JS Viewer fail as well.
Yea my query attempts are failing now as well....hmmmm..
OK at least I am not going crazy here...lol...Patience I guess
Confused because I can view the layers here....I am copying the Rest EndPoint from this app and putting it in my JS app and it does not render.
Specifically Flood Hazard Zones - index 28
https://fema.maps.arcgis.com/home/webmap/viewer.html?webmap=cbe088e7c8704464aa0fc34eb99e7f30
Jay,
Which layer in that web map?..
index 28
Layer: Flood Hazard Zones (ID: 28)
it shows up in their app but fails when queried via the link above.
It renders here: https://fema.maps.arcgis.com/home/webmap/viewer.html?webmap=cbe088e7c8704464aa0fc34eb99e7f30
Jay,
Here is a sample that shows the layer does work it is just slo.....w:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<title>FeatureLayer</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.23/esri/css/esri.css">
<script src="https://js.arcgis.com/3.23/"></script>
<style>
html, body, #map {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}
</style>
<script>
require([
"esri/map",
"esri/layers/FeatureLayer",
"dojo/domReady!"
],
function(
Map,
FeatureLayer
) {
var map = new Map("map", {
basemap: "gray",
center: [-82.44109, 35.6122],
zoom: 17
});
var featureLayer = new FeatureLayer("https://hazards.fema.gov/gis/nfhl/rest/services/public/NFHL/MapServer/28");
map.addLayer(featureLayer);
});
</script>
</head>
<body>
<div id="map"></div>
</body>
</html>
OK it seems to be working sort of...missing all the blue area in the water...
Are you seeing the blue in your app?
My App
FEMA's App