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SOC 4650/5650 - Definition Query Example
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Christopher Prener
February 17, 2019
Education
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SOC 4650/5650 - Definition Query Example
Workflow for executing definition queries in ArcGIS Pro. Created by Branson Fox.
Christopher Prener
February 17, 2019
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Transcript
Definition Queries in ArcGIS Pro
When you have data that you would like to filter
by some criteria, you can use a definition query in ArcGIS Pro. It is useful to start by looking at the attribute table.
In this example, we will filter for Schools in the
Zipcode 65101.
Navigate to the definition query tab in properties.
Navigate to the definition query tab in properties.
Click add clause.
Select the variable you want to filter by.
Select the relationship of this field to a value. In
this case, we select “is Equal to”
Select the value you would like the variable to be
equal to in this case.
You can add multiple clauses to the same data, but
for now we’ll just use one. Click ok when you’re finished.
The data are now filtered to match your criteria.
Here is another example using Fire Stations. We will filter
for Fire Stations in Jefferson City.
Navigate to definition query.
Add clause.
“City is Equal to Jefferson City”
Click ok.
The data are now filtered to your criteria.
We’ll go through another example, and explain a common error
that occurs. Imagine you want to filter for Trees after the year 2000.
When you get to the definition query, you may realize
that there is no option for “is Greater Than or Equal to”
The reason for this is because the year variable in
this case is a text value rather than numeric. We will eventually discuss ways to solve this issue.
Here is one more example that shows what a definition
query for numeric data looks like.
In this example, we will filter for Greenways that are
greater than 0 feet wide. (0 likely indicates greenways that haven’t been developed yet)
Navigate to defintion query.
As you will notice, the options for your definition query
are different because these data are numeric.
In this case, we can filter so that the Width
is greater than 0.
And now our data are filtered by our definition query.