The ArcGIS JavaScript, Flex and Silverlight Web APIs offer a feature layer class for working with client-side graphic features. Feature layers are also used in various forms in ArcGIS Desktop, ArcGIS Explorer and other APIs.

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28
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5answers
20k views

What is difference between map layer and spatial dataset (e.g. feature class, shapefile)?

What is the difference between feature class and feature layer? To me they seems very similar in concept.
9
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1answer
2k views

Difference between Make Feature Layer (Data Management) and using in_memory workspace?

I was wondering the difference is between Make Feature Layer (Data Management) and using an in_memory workspace? To me, one can use either to do some steps in memory, instead of writing data to a ...
9
votes
4answers
2k views

what is the right way to delete all features from featureLayer

I have a featureLayer and I don't want to kill it and create another one. I want to delete all features from the current featureLayer. I found that I can use applyEdits method but in order to use it I ...
8
votes
3answers
5k views

Why is it important to use feature layers in ModelBuilder?

I am trying to understand creation of a geoprocess with ModelBuilder, but I don't know why it's important to use feature layers instead of feature classes when creating a geoprocess with ModelBuilder. ...
8
votes
1answer
375 views

Will hundreds of attributes cause performance problems in an ArcGIS Server layer?

This relates to ArcGIS Server 10.0 SP1, with data served from a file geodatabase polygon featureclass. 1) For performance reasons, is it a bad idea to have a featureclass with hundreds of attributes? ...
6
votes
2answers
243 views

Difference between CoordinateSystem and CoordinateReferenceSystem

What is the concept of Coordinate Reference System. You know GeoTools has a FeatureType class having getCoordinateReferenceSystem() function and also a CoordinateReferenceSystem class having ...
6
votes
2answers
9k views

Adding a FeatureLayer ARCGIS JavaScript API

Hi I am currently exploring ARCGIS Javascript API. I have my own map services and feature services up on my local server. I would want to use the FeatuerLayer to select and highlight feature on the ...
6
votes
1answer
3k views

How to handle add feature event in the FeatureLayer/Editor

I use a FeatureLayer created from the featureCollection. I also use esri.dijit.editing.Editor to add a feature to the map. Every time feature has been added to this layer I want to send it to my ...
5
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1answer
3k views

How to change a FeatureLayer's symbols?

I did this: dojo.connect(featureLayer, "onUpdateEnd", function() { var defaultSymbol = new esri.symbol.SimpleMarkerSymbol().setColor(new dojo.Color([0,0,255])); ...
5
votes
3answers
925 views

How to visually sort the order of Points with QGIS, GDAL, …?

The following Points layer is the basis of a rendering in a Android application. Android allows to draw a shape from the provided points. I cannot use LineStrings. However, the order of points ...
5
votes
1answer
2k views

How do I use a toggle button with the ESRI javascript api

I am trying to use two toggle buttons which have been added to a map to toggle layers on and off in my simple web application. I am having problems getting the toggle button to respond when clicked or ...
5
votes
1answer
218 views

ESRI Javascript FeatureLayer Select by Attributes

I am trying to select a group of features in an ESRI javascript API featureLayer by attribute. The call errors out. My code is as follows. Here is the layer definition: var fieldDefs = [{ ...
5
votes
2answers
170 views

How to select behind feature which is overlapped with the same layer on QGIS 1.8.0

My issue: I received data which was created without "Avoid intersection of new polygon". There a few overlapped feature with the same layer. I could fine overlapped feature by the spatial query. But ...
4
votes
2answers
4k views

“TypeError: Unable to draw graphic (geometry:null, symbol:null)” after adding tiled and feature layers

I'm seeing the following error when attempting to add a tiled and feature layer to the same map when using the ArcGIS Server JS API 3.1: TypeError: Unable to draw graphic (geometry:null, ...
4
votes
3answers
9k views

FeatureLayer creating in javascript ArcGIS API

I got the sample called "Feature Layer with ONDEMAND mode" in the ArcGIS for js resource center. This example just adds layer with rivers to the map. I want to use my own features instead of using ...
4
votes
1answer
1k views

Feature Service layer issues

What is the maximum number of records returned by WFS protocol? What is maximum number of records returned by a Feature Layer in ArcGIS Server 10.1? What is maximum number of records the ArcGIS ...
4
votes
1answer
953 views

Selecting several disseminate features with ArcGIS API for JavaScript?

I have a cadastral map similar to this one from an ArcGIS Javascript API example: Cadastral map What I would like to do is selecting several parcels clicking on them and show the information related ...
4
votes
1answer
5k views

automatic zoom to layer in arcgis js api

I'm trying to zoom to layer automatically as soon as the map finishes loading using the guide here. To be clear, I'm only loading one layer and just want to zoom in on one of the layers provided by ...
4
votes
2answers
2k views

ARCGIS Javascript API Feature Layer retrieval

I would want to develop an application where we could query the layer based on a result set of certain attributes of the features and highlight features. Approach Currently I tried using the feature ...
4
votes
1answer
10k views

How to Zoom to a FeatureLayer Using ArcGIS Javascript API

I am making a web application using the Javascript API and am trying to zoom to a feature layer from a row click in a dojo data grid. I have this working for a dynamic layer, but am having issues with ...
4
votes
0answers
25 views

How to synch a FeatureTable with a FeatureLayer's selection set?

The ArcGIS Server JS API contains a new FeatureTable class, which shows the attribute table corresponding to a FeatureLayer. There is an option syncSelection which: Enables an interaction between ...
4
votes
0answers
5k views

Populate an existing popup with an AttributeInspector after RelationshipQuery returns results

Here's the workflow: A user selects a feature layer polygon, views a popup. A link added to the popup will run a RelationshipQuery to view related records. How can I get the RelationshipQuery results ...
3
votes
3answers
2k views

How to count point features in polygon using ArcGIS API for JavaScript?

I have published in my ArcGIS Server two layers: A polygon one and a point feature one. Points are contained in polygons. I would like to know how to count the number of points belonging/contained to ...
3
votes
2answers
240 views

Can MakeFeatureLayer Object be Passed into ExportReport Function Layer Parameter?

I'm trying to pass an in memory layer object created from a feature class using Code: arcpy.MakeFeatureLayer_management() into the Code: arcpy.mapping.ExportReport() function. It's erroring out, ...
3
votes
1answer
163 views

Using Update Cursor, populate field

I am trying to write a script where you preemptively select features and then go to the tool which calls for the feature layer and it populates fields based on certain criteria which I will design of ...
3
votes
4answers
565 views

How to perform relational queries against an ArcSDE geodatabase using the ArcGIS API for JavaScript?

I have a geospatial database which contains both spatial and not-spatial tables I would like to publish my data on ArcGis for server and perform both simple and spatial queries. Also, foreign key ...
3
votes
1answer
206 views

Updating fields of feature layer and reflecting changes in original data

I am trying to write a script that will select points from a feature class that are within a polygon and update the fields within the original point feature class. The problem I'm running into is ...
3
votes
1answer
821 views

How to control the rendering priority/order of feature layers?

I am displaying polygon, line and point feature layers on a button click event and adding layers in order based on their geometry type, e.g.: polygon -> line -> point. In certain cases layers are ...
3
votes
2answers
2k views

Is there any way to set polygon features fill color and outline programmatically?

By some process I am creating a polygon feature layer. Before adding the layer in the map, I want to set polygon's fill color to no color and set polygon's outline color and width. I am working with ...
3
votes
1answer
1k views

Feature Layer is not showing the points on the map

I have a simple feature layer. The points will show up if I put the URL in a DynamicMapServiceLayer, but I need to use maptips, so that will not work. Below is my relevant XAML. <esri:Map ...
3
votes
2answers
2k views

Populating a Dojo widget with country names based on an ESRI hosted layer

Wow, Javascript is not that easy - can someone help me make a simple breakthrough just to understand some basic concepts. Does anyone know how to populate a filteringSelect Dojo dijit with the names ...
3
votes
1answer
111 views

Can't retrieve data from featureLayer

I can't get any value from featurelayer. This is the code: function testarvin1() { require([ "esri/Map", "esri/layers/FeatureLayer"], function (FeatureLayer) { ...
3
votes
1answer
43 views

Label can't access added attribute

I have a layer that gets created with a couple of attributes, one of which is NAME. Then I create a LabelLayer and add a feature layer like so: layerLabel.addFeatureLayer(layerDisplay, rendererLbl, ...
3
votes
0answers
145 views

Filtered SimpleFeatureCollection really slow on Map and other operations

I'm working with a shapefile having about 85.000 features. I need to select some of these using a filter and then showing these on a map. Now... If I draw the entire shapefile's features the creation ...
3
votes
0answers
3k views

Choosing between Dynamic layers and Feature layers [closed]

I'm building a client using the ArcGIS WPF libraries, that's displaying my entities on a world map. I'm using an ArcGISDynamicMapServiceLayer to display the geographic and topographic base map, and ...
2
votes
2answers
260 views

Proper syntax for Select Feature Layer by Location

Can someone let me know how I can use a single feature from one layer as the "Select Features" when using the Make Feature Layer by Location tool with another layer as the input? In the code below ...
2
votes
1answer
287 views

ArcObjects 10/10.1 Get rid of Invalid layer symbol in TOC

I've written an add-in (VS2010, C#) that finds specific invalid feature layers in ArcMap and fixes them. After the layer is fixed, the red invalid symbol still appears in the TOC. An ...
2
votes
1answer
328 views

Feature Layer (Polygon) Rendering issue in ArcGIS Server 10.1

I have a feature layer consisting of 96,000 features, but we are displaying a maximum of 13,000 features in our map application. There is an issue that for some zoom levels the features are visible ...
2
votes
1answer
3k views

Can Arcmap 10 do change detection?

I have an assignment to find out changed areas of the two different layers ( let's say 2000 and 2010).the layers are vector. Is it possible to detect the changed areas by using Arcgis?
2
votes
1answer
241 views

Do FeatureLayers reproject their features to adapt them to the map projection?

I'm working with the ArcGIS Flex API. For example, ArcGISDynamicMapLayers do reproject their data in order to make it in the same projection as the map. Do FeatureLayers have the same behaviour?
2
votes
1answer
3k views

Adding layers using ArcGISDynamicMapServiceLayer

I am right now adding individual layers using FeatureLayer but it takes quite some time to load as the map is for US Counties (3076 count). I tried to load it using ArcGISDynamicMapServiceLayer but I ...
2
votes
1answer
69 views

Putting features (IFeature) into ifeatureclass with ArcGIS Engine?

I am trying to get the selected features from axMapControl and put them in a new feature class. I can get the selected features but when i'm trying to put them in a IFeatureClass and then cast it as ...
2
votes
2answers
238 views

how can we save vector layer as a file in openlayers

Im using mapserver + openlayer for GIS API and im new to GIS. I'm done with drawing line, point and polygon features in openlayer. but not being able to save it in some shapefile afterwards i got to ...
2
votes
1answer
334 views

ArcPy inconsistently accepts SQL queries for MakeFeatureLayer or SelectLayerByAttribute

I need to buffer a subset of features in a particular feature class. To do this, I am first creating a feature layer (using a SQL query to select only what I want), and then running Buffer. So my ...
2
votes
2answers
971 views

Get IFeatureLayer from ILayer using ArcGIS Engine?

I try to select object from layer by name. I think i found sollution here. First problem i got is that i use GroupLayer. So i made research how to get subLayer from GroupLayer. Sollution is here. Now ...
2
votes
1answer
462 views

Using more than one graphics layer with a FeatureDataGrid

I am wanting to use the FeatureDataGrid to display data. The problem is I have more than one layer that contains data that needs to be displayed. This is how you use the DataGrid for one layer: ...
2
votes
1answer
2k views

How to vary the infoWindow size for different feature layers

I have multiple feature layers on the map, and I wish to display a different sized infoWindow for each layer. As far as I can tell, the map has one infoWindow, which can be resized using: ...
2
votes
1answer
39 views

How do I create a layer with popups that has hundreds of unique markers/symbols?

I am creating a layer in ArcGIS JavaScript API. I am looking for the best way to have a feature layer with popups and unique markers. This layer has hundreds of markers at a time. The markers are ...
2
votes
1answer
41 views

JAVA GIS create shapefile from FeatureLayer

The title kind of saids it all. I am attempting to export a featurelayer to a shapefile and am not having any luck finding a library which includes this functionality or relevant code to see where to ...
2
votes
1answer
119 views

Get feature data from lat long input QGIS

In QGIS, I have a polygon dataset with feature data. I would like to extract data from this dataset using a latitude and longitude. To be more clear, I have a list of 1000 coordinates. I would like ...