def test_vararray():
votable = tree.VOTableFile()
resource = tree.Resource()
votable.resources.append(resource)
table = tree.Table(votable)
resource.tables.append(table)
tabarr = []
heads = ['headA', 'headB', 'headC']
types = ["char", "double", "int"]
vals = [["A", 1.0, 2], ["B", 2.0, 3], ["C", 3.0, 4]]
for i in range(len(heads)):
tabarr.append(
tree.Field(votable,
name=heads[i],
datatype=types[i],
arraysize="*"))
table.fields.extend(tabarr)
table.create_arrays(len(vals))
for i in range(len(vals)):
values = tuple(vals[i])
table.array[i] = values
buff = io.BytesIO()
votable.to_xml(buff)
def test_make_Fields():
votable = tree.VOTableFile()
# ...with one resource...
resource = tree.Resource()
votable.resources.append(resource)
# ... with one table
table = tree.Table(votable)
resource.tables.append(table)
table.fields.extend(
[tree.Field(votable, name='Test', datatype="float", unit="mag")])
def test_build_from_scratch(tmpdir):
# Create a new VOTable file...
votable = tree.VOTableFile()
# ...with one resource...
resource = tree.Resource()
votable.resources.append(resource)
# ... with one table
table = tree.Table(votable)
resource.tables.append(table)
# Define some fields
table.fields.extend([
tree.Field(votable,
ID="filename",
name='filename',
datatype="char",
arraysize='1'),
tree.Field(votable,
ID="matrix",
name='matrix',
datatype="double",
arraysize="2x2")
])
# Now, use those field definitions to create the numpy record arrays, with
# the given number of rows
table.create_arrays(2)
# Now table.array can be filled with data
table.array[0] = ('test1.xml', [[1, 0], [0, 1]])
table.array[1] = ('test2.xml', [[0.5, 0.3], [0.2, 0.1]])
# Now write the whole thing to a file.
# Note, we have to use the top-level votable file object
votable.to_xml(str(tmpdir.join("new_votable.xml")))
votable = parse(str(tmpdir.join("new_votable.xml")))
table = votable.get_first_table()
assert_array_equal(
table.array.mask,
np.array([(False, [[False, False], [False, False]]),
(False, [[False, False], [False, False]])],
dtype=[('filename', '?'), ('matrix', '?', (2, 2))]))
def test_resource_structure():
# Based on issue #1223, as reported by @astro-friedel and @RayPlante
from astropy.io.votable import tree as vot
vtf = vot.VOTableFile()
r1 = vot.Resource()
vtf.resources.append(r1)
t1 = vot.Table(vtf)
t1.name = "t1"
t2 = vot.Table(vtf)
t2.name = 't2'
r1.tables.append(t1)
r1.tables.append(t2)
r2 = vot.Resource()
vtf.resources.append(r2)
t3 = vot.Table(vtf)
t3.name = "t3"
t4 = vot.Table(vtf)
t4.name = "t4"
r2.tables.append(t3)
r2.tables.append(t4)
r3 = vot.Resource()
vtf.resources.append(r3)
t5 = vot.Table(vtf)
t5.name = "t5"
t6 = vot.Table(vtf)
t6.name = "t6"
r3.tables.append(t5)
r3.tables.append(t6)
buff = io.BytesIO()
vtf.to_xml(buff)
buff.seek(0)
vtf2 = parse(buff)
assert len(vtf2.resources) == 3
for r in range(len(vtf2.resources)):
res = vtf2.resources[r]
assert len(res.tables) == 2
assert len(res.resources) == 0
import numpy as np
import glob
from astropy.io.votable import parse
nm = glob.glob('./*.png')[0]
imArr = misc.imread(nm).astype(np.int32)
r, c = imArr.shape
# print imArr.dtype
votable = vo.VOTableFile()
resource = vo.Resource()
votable.resources.append(resource) # appending resource into votable
table = vo.Table(votable)
resource.tables.append(table)
table.description = 'Lette A from non-MNIST set'
group = vo.Group(table)
table.groups.append(group)
para = vo.Param(votable,
name='label',
datatype='char',
arraysize='1',
value='A')
group.entries.append(para)
# table.fields.extend([ \
# vo.Field(votable, name="filename", datatype="char", arraysize="*"), \
# vo.Field(votable, name="matrix", datatype="double", arraysize="2x2")])