Introduction

Export a grid frame to ESRI Shapefile

The format and content of this export is equivalent to exporting a grid frame from the spatial display window using the debug menu (F12)

The ID of this serializer is 'grid2shp'. 

Example module configuration

<timeSeriesExportRun xmlns="http://www.wldelft.nl/fews" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.wldelft.nl/fews http://fews.wldelft.nl/schemas/version1.0/timeSeriesExportRun.xsd">
	<export>
		<general>
			<exportType>grid2shp</exportType>
			<folder>$EXPORT_FOLDER$</folder>
			<exportFileName>
				<name>PQPF_GRIB2</name>
				<prefix>
					<currentTimeFormattingString>yyyyMMddHHmmss</currentTimeFormattingString>
				</prefix>
			</exportFileName>
			<exportMissingValue>-999</exportMissingValue>
			<geoDatum>WGS 1984</geoDatum>
		</general>
		<timeSeriesSet>
			<moduleInstanceId>ImportGrids_PQPF</moduleInstanceId>
			<valueType>grid</valueType>
			<parameterId>QPF</parameterId>
			<qualifierId>PQPF50</qualifierId>
			<locationId>PQPF_GRIB2</locationId>
			<timeSeriesType>external forecasting</timeSeriesType>
			<timeStep multiplier="6" unit="hour"/>
			<relativeViewPeriod end="6" start="6" unit="hour"/>
			<readWriteMode>read only</readWriteMode>
		</timeSeriesSet>
	</export>
</timeSeriesExportRun>

Attributes/dbf columns

You can add meta data to the exported shape file.  The custom strings attributes of the export meta data are exported as text columns to the dbf file. Every row has the same attribute values.

see Export module#metadata



Notes:

1) The 'grid2shp' serializer can only output one time step so in case the grid is part of a timeseries the relativeViewperiod needs to be set to select a range of which only the first timestep will be used.

2) A prefix or suffix can be added to the filename using a time formatting string as in the given example using either the <currentTimeFormattingString> or <timeZeroFormattingString>.

3) The exportMissingValue can be used to replace the given missing values by NaN (Not A Number) values to indicate that there is no valid data, ArcGIS will display such records as '0' instead of -999 in this example.


  • No labels

Disclaimer