`OceanColorLevel3SMIFileSearcher` Class

A DatasetCollection that queries NASA GSFC for Level 3 Standard Mapped Images (SMI).

Module:	`GeoEco.DataProducts.NASA.OceanColor`
Intended use:	Some properties are intended for GeoEco internal use only and are not recommended for external callers
COM:	Not exposed as a COM class
ArcGIS:	Not exposed to ArcGIS

Constructor

class OceanColorLevel3SMIFileSearcher( [sensor[, temporalResolution[, product[, startDate[, endDate[, timeout[, maxRetryTime[, cacheDirectory]]]]]]]]): OceanColorLevel3SMIFileSearcher constructor.

Properties

CacheDirectory: Directory for caching local copies of remote datasets.

Read-only properties

DisplayName: Informal name of this object.

ParentCollection: DatasetCollection that is the parent of this object (if any).

Instance methods

GetAllQueryableAttributes( ): Returns a list of all queryable attributes.

GetNewestDataset( [expression[, **options]]): Queries the collection and returns the newest Dataset that matches the search expression.

GetOldestDataset( [expression[, **options]]): Queries the collection and returns the oldest Dataset that matches the search expression.

GetQueryableAttribute( name): Returns the queryable attribute with the specified name.

GetQueryableAttributeValue( name): Returns the value of the queryable attribute with the specified name.

GetQueryableAttributesWithDataType( typeMetadata): Returns a list queryable attributes having the specified data type.

QueryDatasets( [expression[, reportProgress[, **options]]]): Queries the collection for Datasets that match a search expression.

Classmethods

TestCapability( capability): Tests whether a capability is supported by this class or an instance of it.

Remarks

The NASA Goddard Space Flight Center (GSFC) OceanColor Group publishes a variety of satellite image products derived from ocean color observations made by polar-orbiting sensors such as MODIS, SeaWiFS, OCTS, and CZCS. The most popular product is an estimate of chlorophyll-a concentration.

This class accesses the Level 3 Standard Mapped Image (SMI) products, which have global spatial extent, use a geographic coordinate system with the WGS 1984 datum, and have square cells with either 1/12 or 1/24 degree resolution (about 9.3 km or 4.6 km at the equator).

NASA publishes the SMI products as collections of compressed HDF version 4 files that are downloadable from the OceanColor web site. This class automatically downloads, decompresses, and reads HDF files as they are needed. Unless you specify a directory to cache the files, they will be stored in your user TEMP directory and deleted when processing is finished.

References

To cite the use of NASA OceanColor data in a publication, please see these instructions.

For a list of publications from the NASA OceanColor Group, see this page.