The ArcGIS Online Map Viewer allows you to filter your data by multiple criteria. This allows you to limit which features draw and focus on only certain subsets of your data that are of interest to you. In addition, Analysis Tools take note of current filters when generating their output.
In this lab you will focus in on Rail Stops on the Blue Line and generate buffers around only those stops.
Go to www.arcgis.com and login.
Use Search
> Search for Layers
to find the PDX_Rail_Stops
layer by al_geodev
.
Click Open
> Add layer to new map
.
NOTE: If you are having difficulty finding it, just click this link.
Click PDX Rail Stops
> Filter
. Note you have two dropdowns and a text field. The text field has 3 radio buttons below it.
Pick LINE
in the first dropdown.
Pick contains
in the second dropdown.
Type B
into the text field (this is how the data is encoded for the Blue Line).
Click Apply Filter
.
Click PDX Rail Stops
> Perform Analysis
> Use Proximity
> Create Buffers
.
Choose to buffer by Distance
and set the size to 1
Miles
.
Expand the Options
and select Dissolve
.
Set the Result layer name
to 1 Mile Radius from Rail Stops
.
Clear the Use current map extent
checkbox.
Click Run Analysis
.
Drag the PDX Rail Stops
layer to the top of the layers list.
Your map should look something like this map. See how buffers were only calculated for stations on the B (Blue) line.
TYPE
, is
and selecting Unique
from the Value radio buttons. What happens to the text box?STATUS
is not
Existing
).LINE
contains
R
combined with either:
STATUS
is
Existing
, orSTATUS
is not
Existing
.Details
> PDX Rail Stops
> Save Layer
to save this filtered “view” on the layer to your My Content
space in your account. Perhaps name it PDX Blue Line Stops
. This new item will point to the same unfiltered data source, but when added to the ArcGIS Online Map Viewer, will automatically filter according to the saved definitions. You can share these items with colleagues and users as a great way for them to bring focused content from a larger dataset into their own maps.