# uproot.models.TGraph.Model_TGraphAsymmErrors

Defined in uproot.models.TGraph on line 759.

Inheritance order:
uproot.model.DispatchByVersion

class uproot.models.TGraph.Model_TGraphAsymmErrors

  A uproot.model.DispatchByVersion for `TGraphAsymmErrors`.

## awkward_form

Inherited from uproot.model.DispatchByVersion.

classmethod Model_TGraphAsymmErrors.awkward_form(file, context)
  Parameters:

    - cls (subclass of uproot.model.DispatchByVersion) – This class.

    - file (uproot.ReadOnlyFile) – File to use to generate uproot.Model classes from its streamers and `file_path` for error messages.

    - context (dict) – Context for the Form-generation; defaults are `{"index_format": "i64", "header": False, "tobject_header": True, "breadcrumbs": ()}`. See below for context argument descriptions.

    - index_format (str) – Format to use for indexes of the `awkward.forms.Form`; may be `"i32"`, `"u32"`, or `"i64"`.

    - header (bool) – If True, include headers in the Form’s `"uproot"` parameters.

    - tobject_header (bool) – If True, include headers for `TObject` classes in the Form’s `"uproot"` parameters.

    - breadcrumbs (tuple of class objects) – Used to check for recursion. Types that contain themselves cannot be Awkward Arrays because the depth of instances is unknown.

  The `awkward.forms.Form` to use to put objects of type type in an Awkward Array.

## strided_interpretation

Inherited from uproot.model.DispatchByVersion.

classmethod Model_TGraphAsymmErrors.strided_interpretation(file, header=False, tobject_header=True, breadcrumbs=(), original=None)
  Parameters:

    - cls (subclass of uproot.model.DispatchByVersion) – This class.

    - file (uproot.ReadOnlyFile) – File to use to generate uproot.Model classes from its streamers and `file_path` for error messages.

    - header (bool) – If True, assume the outermost object has a header.

    - tobject_header (bool) – If True, assume that `TObjects` have headers.

    - original (None, uproot.Model, or uproot.containers.Container) – The original, non-strided model or container.

    - breadcrumbs (tuple of class objects) – Used to check for recursion. Types that contain themselves cannot be strided because the depth of instances is unknown.

  Returns a list of (str, `numpy.dtype`) pairs to build a uproot.AsStridedObjects interpretation.

## class_of_version

Inherited from uproot.model.DispatchByVersion.

classmethod Model_TGraphAsymmErrors.class_of_version(version)

  Returns the class corresponding to a specified `version` if it exists.

  If not, this classmethod returns None. No attempt is made to create a missing class.

## has_version

Inherited from uproot.model.DispatchByVersion.

classmethod Model_TGraphAsymmErrors.has_version(version)

  Returns True if a class corresponding to a specified `version` currently exists; False otherwise.

## new_class

Inherited from uproot.model.DispatchByVersion.

classmethod Model_TGraphAsymmErrors.new_class(file, version)

  Uses `file` to create a new class for a specified `version`.

  As a side-effect, this new class is added to `cls.known_versions` (for class_of_version and has_version).

  If the `file` lacks a `TStreamerInfo` for the class, this function returns a uproot.model.UnknownClassVersion (adding it to `uproo4.unknown_classes` if it’s not already there).

## read

Inherited from uproot.model.DispatchByVersion.

classmethod Model_TGraphAsymmErrors.read(chunk, cursor, context, file, selffile, parent, concrete=None)
  Parameters:

    - cls (subclass of uproot.model.DispatchByVersion) – This class.

    - chunk (uproot.source.chunk.Chunk) – Buffer of contiguous data from the file uproot.source.chunk.Source.

    - cursor (uproot.Cursor) – Current position in that `chunk`.

    - context (dict) – Auxiliary data used in deserialization.

    - file (uproot.ReadOnlyFile) – An open file object, capable of generating new uproot.Model classes from its streamers.

    - selffile (uproot.reading.CommonFileMethods) – A possibly uproot.reading.DetachedFile associated with this object.

    - parent (None or calling object) – The previous `read` in the recursive descent.

    - concrete (None or uproot.Model instance) – If None, this model corresponds to the concrete (instantiated) class in C++. Otherwise, this model represents a superclass part of the object, and `concrete` points to the concrete instance.

  Reads the instance version number from the byte stream, backs up the uproot.Cursor to the starting position, and invokes the appropriate uproot.model.VersionedModel’s `read` classmethod.

  If a uproot.model.VersionedModel does not exist for the specified version, the `file`’s `TStreamerInfo` is queried to attempt to create one, and failing that, an uproot.model.UnknownClassVersion is created instead.

## postprocess

Inherited from uproot.model.DispatchByVersion.

classmethod Model_TGraphAsymmErrors.postprocess(self, chunk, cursor, context, file)
  Parameters:

    - cls (subclass of uproot.model.DispatchByVersion) – This class.

    - chunk (uproot.source.chunk.Chunk) – Buffer of contiguous data from the file uproot.source.chunk.Source.

    - cursor (uproot.Cursor) – Current position in that `chunk`.

    - context (dict) – Auxiliary data used in deserialization.

    - file (uproot.ReadOnlyFile) – An open file object, capable of generating new uproot.Model classes from its streamers.

  Called for any additional processing after the object has been fully read.

  The return value from this method is the object that actually represents the ROOT data, which might be a different instance or even a different type from this class. The default in uproot.Model is to return `self`.

  Note that for versioned models, postprocess is called first, then postprocess is called on its output, allowing a uproot.model.DispatchByVersion to refine all data of its type, regardless of version.