Buffer (TQL Param): Difference between revisions
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{{Param TQL|suppresscategory=true|allowselflinks=true| | {{Param TQL|suppresscategory=true|allowselflinks=true| | ||
<onlyinclude> | <onlyinclude> | ||
{{Param TQL| | {{Param TQL|tabletype=row|attribute=BUFFER|type=decimal|description=Buffer the limiting search polygon with this value.|polygon=true|}} | ||
</onlyinclude> | </onlyinclude> | ||
}} | }} | ||
<gallery widths=200px > | <gallery widths=200px > | ||
File:buffer_function_1.png | A [[Building]] and visualized Grid Overlay cells with different values. | File:buffer_function_1.png | A [[Building]] and visualized Grid Overlay cells with different values. | ||
File:buffer_function_2.png | A TQL Query with [[Grid (TQL | File:buffer_function_2.png | A TQL Query with [[Grid (TQL Param)]] and [[Mingridvalue (TQL Param)]] create a limiting search polygon. | ||
File:buffer_function_3.png | By adding a [[Buffer (TQL Param)]], the limit search polygon is expanded. | File:buffer_function_3.png | By adding a [[Buffer (TQL Param)]], the limit search polygon is expanded. | ||
File:buffer_function_4.png | | File:buffer_function_4.png | Now a [[Select lotsize (TQL)]] query provides the lot size of [[building]]s within distance of specific [[grid]] cell values. | ||
</gallery> | </gallery> | ||
{{article end | {{article end | ||
|notes= | |notes= | ||
* This clause parameter allows you to include | * This clause parameter allows you to include [[building]]s within the buffer distance of the limiting search polygons | ||
|howtos= | |||
* [[How to use buffers (TQL)]] | |||
}} | }} | ||
{{TQL param nav}} | {{TQL param nav}} | ||
Latest revision as of 14:30, 28 February 2023
| Param | Type | Description | Limits search polygon |
|---|---|---|---|
| BUFFER | decimal | Buffer the limiting search polygon with this value. | true |
A Building and visualized Grid Overlay cells with different values.
A TQL Query with Grid (TQL Param) and Mingridvalue (TQL Param) create a limiting search polygon.
By adding a Buffer (TQL Param), the limit search polygon is expanded.
Now a Select lotsize (TQL) query provides the lot size of buildings within distance of specific grid cell values.
Notes
- This clause parameter allows you to include buildings within the buffer distance of the limiting search polygons
How-to's