quadbinQuerySource
You can use quadbinQuerySource to build layers and widgets using custom SQL queries powered by your data warehouse that contain:
Quadbin-based data: a column containing a Quadbin cell identifier
Point-based vector data
When you use point-based vector data in your quadbinQuerySource, CARTO will dynamically aggregate it into Quadbin cells, using an aggregation expression of your choice.
Usage
Options
tableName: The fully qualified name (FQN) of the table you want to retrieve from your data warehouse. For example, for a BigQuery connection,
carto-demo-data.demo_tables.quadbin_sample
would be a valid table name.aggregationExp: A valid SQL expression that will define how this source aggregates quadbin cells starting from the base resolution into each parent quadbin cell in lower zoom levels. For example, for an
aggregationExp
containingAVG(income)
, each parent quadbin cell will contain the average income from all its children.For point-based, this defines the aggregation of the points for every zoom level.
aggregationResLevel (optional): A number that expresses the resolution detail that will be used for each zoom level. By default this value is
6
.Numbers lower than 6 will produce a less detailed visualization, with better performance.
Numbers higher than 6 will product a more detailed visualization, with worse performance.
spatialDataColumn (optional): The name of the column that contains the geospatial information (geometries/geographies) that will be used for visualization and etc. By default, CARTO assumes this column is named
geom
.filters (optional): A valid CARTO Filters object, used to perform server-side filtering of this data source with column-based filters.
filtersLogicalOperator (optional): Indicates whether
filters
are applied following anAND
logic or anOR
logic.queryParameters (optional): If your
sqlQuery
contains query parameters, pass the values for each parameter in this field, following your data warehouse mechanism for query parameters, like named or positional parameters.
Response
The response of quadbinQuerySource
is a promise that can be resolved and used in layers and widgets.
Connection compatibility
Layer compatibility
quadbinQuerySource
is compatible with the following layers from the @deck.gl/carto
module:
Widget model compatibility
quadbinQuerySource
is compatible with the following widget models:
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