VRS

class caris.coverage.VRS

CSAR VRS

add_band()

New in version 5.4.0.

Adds a new band

Any iterators or gridders will be invalidated after this is invoked.

Parameters

band_info (BandInfo) – The band info describing the band to be added

begin_transaction()

Begin a new transaction

commit_transaction()

Commit a transaction

create_copy()

Save a copy of this cloud

Either uri or path must be specified.

Keyword Arguments
  • path (str) – The file path of the destination CSAR file”

  • uri (str) – The file uri of the destination CSAR file.”

find_closest_point()

Find the attribute closest to a given point

Parameters
  • position ((x, y) of double) – tile to query

  • band_name (str) – Name of the band to query

query()

New in version 5.2.0: Added flags parameter.

Query values in the VRS

When specifying flags, if any skipped flags exists in the specified band for a sounding, that sounding is skipped. For required flags, all specified flags must exist for that sounding to be returned. The user may specify flag option for any number of flagset bands by reapeating the flag options in a containing tuple.

Parameters
  • bands (list(str), optional) – List of band names to query. If None all bands will be available.

  • box (((x1, y1), (x2, y2))) – Optional box to query

  • flags – Optional tuple of (BandName, SkippedFlags, RequiredFlags).

Returns

Iterator that returns dict(str: numpy.ndarray)

Return type

BlockIterator

Example

To offer full flexbility, single flags may be specified without a tuple and required flags may be omitted if not used. The following are equivalent. This will skip any rejected soundings. flags=(‘Status’,(‘Rejected’,),()) flags=(‘Status’,’Rejected’)

This means for single flags, there is no need to include it in its own tuple.

For specifying multiple flag setting on multiple bands, here is an example of skipping all rejected flags while returning only soundings that have the Overlap LAS flag. In other words, only non-rejected Overlap soundings will be returned. flags=((‘Status’,’Rejected’),(‘LAS_Flags’,(),’Overlap’))

query_box()

Query points within a box

Parameters

box (((x1, y1), (x2, y2)) of double) – area to query

query_tile()

Query points within a tile

Parameters

tile (VRSTile) – tile to query

remove_band()

New in version 5.4.0.

Removes a band

Any iterators or gridders will be invalidated after this is invoked.

Parameters

band_name (str) – The name of the band to be removed

tiles()

Query all leaf tiles

property band_info

The dictionary of (key=band_name, value= BandInfo)

Type

dict

property bounding_polygon

New in version 5.1.0.

str: The bounding polygon of the VRS.

property extents

The geographic extents of the VRS

Type

((x1, y1),(x2, y2)) of float

property uri

The uri of the opened csar file

Type

uri (str)