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get_field(vtk) function added to get FieldData from VTK #42

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get_field(vtk) function added to get FieldData from VTK #42

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131f16f
Introduced functions 'get_field' and 'field_data'
andresegido Sep 28, 2023
c4cf3c1
Introduced suggested changes in pull request
andresegido Oct 4, 2023
76e05ee
Indented docstring
andresegido Oct 4, 2023
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22 changes: 22 additions & 0 deletions src/ReadVTK.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -184,6 +184,11 @@ function piece(vtk_file::VTKFile)
return LightXML.root(vtk_file.xml_file)[vtk_file.file_type][1]["Piece"][1]
end

# Return `FieldData` XML element that contains all VTK field data
function field_data(vtk_file::VTKFile)
return LightXML.root(vtk_file.xml_file)[vtk_file.file_type][1]["FieldData"][1]
end

"""
isstructured(xml_file)

Expand Down Expand Up @@ -406,6 +411,23 @@ function get_data_section(vtk_file::VTKFile, section)
return VTKData(names, data_arrays, vtk_file)
end

# Retrieve FieldData section from the VTK file
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function get_field(vtk_file::VTKFile)
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names = String[]
data_arrays = XMLElement[]

# Iterate over XML elemens in the section
for xml_element in child_elements(field_data(vtk_file))
# We do not know how to handle anything other than `DataArray`s
@assert LightXML.name(xml_element) == "DataArray"

# Store the name and the XML element for each found data array
push!(names, attribute(xml_element, "Name", required = true))
push!(data_arrays, xml_element)
end

return VTKData(names, data_arrays, vtk_file)
end

"""
get_cell_data(vtk_file::VTKFile)
Expand Down