resqpy.surface.PointSet

class resqpy.surface.PointSet(parent_model, uuid=None, load_hdf5=False, points_array=None, crs_uuid=None, polyset=None, polyline=None, random_point_count=None, charisma_file=None, irap_file=None, title=None, originator=None, extra_metadata=None, remove_trailing_999=True)

Bases: BaseSurface

Class for RESQML Point Set Representation within resqpy model object.

Public Data Attributes:

resqml_type

Inherited from BaseResqpy

resqml_type
part	Standard part name corresponding to self.uuid.
root	XML node corresponding to self.uuid.
citation_title	Citation block title equivalent to self.title.

Commonly Used Methods:

__init__(parent_model[, uuid, load_hdf5, ...])	Creates an empty Point Set object and optionally populates from xml or other source.
full_array_ref()	Return a single numpy float array of shape (N, 3) containing all points from all patches.
write_hdf5([file_name, mode])	Create or append to an hdf5 file, writing datasets for the point set patches after caching arrays.
create_xml([ext_uuid, add_as_part, ...])	Creates a point set representation xml node from this point set object and optionally adds as part of model.

Methods:

from_charisma(charisma_file)	Instantiate a pointset using points from an input charisma file
from_irap(irap_file[, remove_trailing_999])	Instantiate a pointset using points from an input irap file.
from_polyline(polyline[, random_point_count])	Instantiates a pointset using points from an input polyline (PolylineRepresentation) object
from_polyset(polyset)	Instantiates a pointset using points from an input polylineset (PolylineSetRepresentation) object
check_crs_match(crs_uuid)	Checks if the point set's crs_uuid matches a given crs_uuid.
set_represented_interpretation_root(interp_root)	Makes a note of the xml root of the represented interpretation.
single_patch_array_ref(patch_index)	Load numpy array for one patch of the point set from hdf5, cache and return it.
load_all_patches()	Load hdf5 data for all patches and cache as separate numpy arrays; not usually called directly.
change_crs(required_crs)	Changes the crs of the point set, also sets a new uuid if crs changed.
trim_to_xyz_box(xyz_box)	Converts point set to a single patch, holding only those points within the xyz box.
trim_to_xy_polygon(xy_polygon)	Converts point set to a single patch, holding only those points within the polygon when projected in xy.
minimum_xy_area_rectangle([delta_theta])	Returns the xy projection rectangle of minimum area that contains the points.
add_patch(points_array)	Extend the current point set with a new patch of points.
extract_property_collection([refresh])	Returns a property collection for the point set.
convert_to_charisma(file_name)	Output to Charisma 3D interpretation format from a pointset.
convert_to_irap(file_name)	Output to IRAP simple points format from a pointset.

Inherited from BaseSurface

create_interpretation_and_feature([kind, ...])

Creates xml and objects for a represented interpretaion and interpreted feature, if not already present.

Inherited from BaseResqpy

__init__(parent_model[, uuid, load_hdf5, ...])	Creates an empty Point Set object and optionally populates from xml or other source.
try_reuse()	Look for an equivalent existing RESQML object and modify the uuid of this object if found.
create_xml([ext_uuid, add_as_part, ...])	Creates a point set representation xml node from this point set object and optionally adds as part of model.
append_extra_metadata(meta_dict)	Append a given dictionary of metadata to the existing metadata.
__eq__(other)	Implements equals operator; uses is_equivalent() otherwise compares class type and uuid.
__ne__(other)	Implements not equal operator.
__repr__()	String representation.

---

__init__(parent_model, uuid=None, load_hdf5=False, points_array=None, crs_uuid=None, polyset=None, polyline=None, random_point_count=None, charisma_file=None, irap_file=None, title=None, originator=None, extra_metadata=None, remove_trailing_999=True)

Creates an empty Point Set object and optionally populates from xml or other source.

Parameters

• parent_model (model.Model object) – the model to which the new point set belongs

• uuid (uuid.UUID, optional) – if present, the object is populated from the RESQML PointSetRepresentation with this uuid

• load_hdf5 (boolean, default False) – if True and uuid is present, the actual points are pre-loaded into a numpy array; otherwise the points will be loaded on demand

• points_array (numpy float array of shape (..., 2 or 3), optional) – if present, the xy(&z) data which will constitute the point set; missing z will be set to zero; ignored if uuid is not None

• crs_uuid (uuid.UUID, optional) – if present, identifies the coordinate reference system for the points; ignored if uuid is not None; if None, ‘imported’ points will be associated with the default crs of the parent model

• polyset (optional) – if present, creates a pointset from points in a polylineset

• polyline (optional) – if present and random_point_count is None or zero, creates a pointset from points in a polyline; if present and random_point_count is set, creates random points within the (closed, convex) polyline

• random_point_count (int, optional) – if present and polyline is present then the number of random points to generate within the (closed) polyline in the xy plane, with z set to 0.0

• charisma_file (optional) – if present, creates a pointset from a charisma 3d interpretation file

• irap_file (optional) – if present, creates a pointset from an IRAP classic points format file

• title (str, optional) – the citation title to use for a new point set; ignored if uuid is not None

• originator (str, optional) – the name of the person creating the point set, defaults to login id; ignored if uuid is not None

• extra_metadata (dict, optional) – string key, value pairs to add as extra metadata for the point set; ignored if uuid is not None

• remove_trailing_999 (bool, default True) – if True, when loading from an irap_file, if the last point in the file is triple 999.0, then it is excluded from the point set

Returns

newly created PointSet object

add_patch(points_array)

Extend the current point set with a new patch of points.

append_extra_metadata(meta_dict)

Append a given dictionary of metadata to the existing metadata.

change_crs(required_crs)

Changes the crs of the point set, also sets a new uuid if crs changed.

Notes

this method is usually used to change the coordinate system for a temporary resqpy object; to add as a new part, call write_hdf5() and create_xml() methods

check_crs_match(crs_uuid)

Checks if the point set’s crs_uuid matches a given crs_uuid.

Notes

if the current model crs_uuid is None, the new crs_uuid is used as the model crs_uuid; if a mismatch is found an assertion error is raised

property citation_title

Citation block title equivalent to self.title.

convert_to_charisma(file_name)

Output to Charisma 3D interpretation format from a pointset.

If file_name exists, it will be overwritten.

Parameters

file_name – output file name to save to

convert_to_irap(file_name)

Output to IRAP simple points format from a pointset.

If file_name exists, it will be overwritten.

Parameters

file_name – output file name to save to

create_interpretation_and_feature(kind='horizon', name=None, interp_title_suffix=None, is_normal=True)

Creates xml and objects for a represented interpretaion and interpreted feature, if not already present.

create_xml(ext_uuid=None, add_as_part=True, add_relationships=True, title=None, originator=None)

Creates a point set representation xml node from this point set object and optionally adds as part of model.

Parameters

• ext_uuid (uuid.UUID) – the uuid of the hdf5 external part holding the points array(s)

• add_as_part (boolean, default True) – if True, the newly created xml node is added as a part in the model

• add_relationships (boolean, default True) – if True, a relationship xml part is created relating the new point set part to the crs part (and optional interpretation part)

• title (string) – used as the citation Title text; should be meaningful to a human

• originator (string, optional) – the name of the human being who created the point set representation part; default is to use the login name

Returns

the newly created point set representation xml node

extract_property_collection(refresh=False)

Returns a property collection for the point set.

Parameters

refresh (bool, default False) – if True, the property collection is refreshed from the current state of the model; if False and the property collection has already been cached for the point set, then the cached copy is used

Returns

a PropertyCollection holding those properties in the model where this point set is the supporting representation

Note

point set properties have indexable element of ‘nodes’

from_charisma(charisma_file)

Instantiate a pointset using points from an input charisma file

Parameters

charisma_file – a charisma 3d interpretation file

from_irap(irap_file, remove_trailing_999=True)

Instantiate a pointset using points from an input irap file.

Parameters

• irap_file (str) – an existing IRAP classic points format file

• remove_trailing_999 (bool, default True) – if True, and the last point in the irap file is triple 999.0, then it is excluded

from_polyline(polyline, random_point_count=None)

Instantiates a pointset using points from an input polyline (PolylineRepresentation) object

Parameters

polyline – if random_point_count is None or zero, creates a pointset from points in a polyline; if present and random_point_count is set, creates random points within the (closed, convex) polyline

from_polyset(polyset)

Instantiates a pointset using points from an input polylineset (PolylineSetRepresentation) object

Parameters

polyset (resqpy.lines.PolylineSet object) – a polylineset object to generate the pointset from

full_array_ref()

Return a single numpy float array of shape (N, 3) containing all points from all patches.

load_all_patches()

Load hdf5 data for all patches and cache as separate numpy arrays; not usually called directly.

minimum_xy_area_rectangle(delta_theta=5.0)

Returns the xy projection rectangle of minimum area that contains the points.

Parameters

delta_theta (float, default 5.0) – the incremental angle in degrees to test against

Returns

(d1, d2, r) where d1 and d2 are lengths of sides of an xy plane rectangle that just contains the points, and d1 <= d2, and r is a bearing in degrees of a d2 (longer) side between 0.0 and 180.0

property part

Standard part name corresponding to self.uuid.

property root

XML node corresponding to self.uuid.

set_represented_interpretation_root(interp_root)

Makes a note of the xml root of the represented interpretation.

single_patch_array_ref(patch_index)

Load numpy array for one patch of the point set from hdf5, cache and return it.

trim_to_xy_polygon(xy_polygon)

Converts point set to a single patch, holding only those points within the polygon when projected in xy.

Parameters

xy_polygon (closed convex resqpy.lines.Polyline) – the polygon outlining the area in xy within which points are kept

Notes

usually used to reduce the point set volume for a temprary object; a new uuid is assigned; to add as a new part, call write_hdf5() and create_xml() methods

trim_to_xyz_box(xyz_box)

Converts point set to a single patch, holding only those points within the xyz box.

Parameters

xyz_box (numpy float array of shape (2, 3)) – the minimum and maximum range to keep in x,y,z

Notes

usually used to reduce the point set volume for a temprary object; a new uuid is assigned; to add as a new part, call write_hdf5() and create_xml() methods

try_reuse()

Look for an equivalent existing RESQML object and modify the uuid of this object if found.

Returns

boolean – True if an equivalent object was found, False if not

Note

by design this method may change this object’s uuid as a side effect

write_hdf5(file_name=None, mode='a')

Create or append to an hdf5 file, writing datasets for the point set patches after caching arrays.

title

Citation title

originator

Creator of object. By default, user id.

uuid

Unique identifier