Contents
Where are the layers located in ArcGIS Online?
You can also have layers that reference the data in a GIS server. For example, if you register your ArcGIS Server map service as an item, a layer that contains a reference to your map service is created. The data still resides within your map service and is not copied to ArcGIS Online.
What are the different types of web layers?
Types of web layers. Layers represent geographic features such as points, lines, polygons, imagery, surface elevation, cell-based grids, or virtually any data feed that has location—for example, weather gauges, traffic conditions, security cameras, and tweets.
How do I expand the layers in a map?
Optionally check the Expand all layers by default check box. This expands all group layers by default in your app, allowing them to be shown in the layers list. Uncheck layers in the map that you don’t want to show on the list.
How to display a web map in JavaScript?
In CodePen, run your code to display the map. You should now see a scale bar displaying scale (in miles), along with a legend that displays layer information contained in the web map. What’s next? What’s next?
How are tile caches and imagery layers created in ArcGIS?
These layers are image services generated from one or more image files. If a tiled imagery layer is created using multiple images, the images are mosaicked together into a single image. Source image and raster files are converted to Cloud Raster Format (CRF) when uploaded to your ArcGIS Online organization.
What does the imagerylayer class do in ArcGIS?
The Imagerylayer class represents an image service resource as a layer. An ImageryLayer object retrieves and displays data from image services. ImageryLayer allows you to and apply server defined or client-defined rendering rules (e.g. remap, colormap), and mosaic rules.
How does ArcGIS work with raster and imagery?
The arcgis.raster module contains classes and raster analysis functions for working with raster data and imagery layers. Raster data is made up of a grid of cells, where each cell or pixel can have a value.