Renames the keyword table_area to table_areas (#171)

`table_areas` sounds more apt since it is a list and there can be
multiple table areas on a page.

Closes #165

camelot/cli.py

@@ -48,7 +48,7 @@ def cli(ctx, *args, **kwargs):
 
 
 @cli.command('lattice')
-@click.option('-T', '--table_area', default=[], multiple=True,
+@click.option('-T', '--table_areas', default=[], multiple=True,
               help='Table areas to process. Example: x1,y1,x2,y2'
               ' where x1, y1 -> left-top and x2, y2 -> right-bottom.')
 @click.option('-back', '--process_background', is_flag=True,
@@ -95,8 +95,8 @@ def lattice(c, *args, **kwargs):
     filepath = kwargs.pop('filepath')
     kwargs.update(conf)
 
-    table_area = list(kwargs['table_area'])
-    kwargs['table_area'] = None if not table_area else table_area
+    table_areas = list(kwargs['table_areas'])
+    kwargs['table_areas'] = None if not table_areas else table_areas
     copy_text = list(kwargs['copy_text'])
     kwargs['copy_text'] = None if not copy_text else copy_text
     kwargs['shift_text'] = list(kwargs['shift_text'])
@@ -116,7 +116,7 @@ def lattice(c, *args, **kwargs):
 
 
 @cli.command('stream')
-@click.option('-T', '--table_area', default=[], multiple=True,
+@click.option('-T', '--table_areas', default=[], multiple=True,
               help='Table areas to process. Example: x1,y1,x2,y2'
               ' where x1, y1 -> left-top and x2, y2 -> right-bottom.')
 @click.option('-C', '--columns', default=[], multiple=True,
@@ -142,8 +142,8 @@ def stream(c, *args, **kwargs):
     filepath = kwargs.pop('filepath')
     kwargs.update(conf)
 
-    table_area = list(kwargs['table_area'])
-    kwargs['table_area'] = None if not table_area else table_area
+    table_areas = list(kwargs['table_areas'])
+    kwargs['table_areas'] = None if not table_areas else table_areas
     columns = list(kwargs['columns'])
     kwargs['columns'] = None if not columns else columns
 

camelot/io.py

@@ -24,7 +24,7 @@ def read_pdf(filepath, pages='1', flavor='lattice', suppress_warnings=False,
         Lattice is used by default.
     suppress_warnings : bool, optional (default: False)
         Prevent warnings from being emitted by Camelot.
-    table_area : list, optional (default: None)
+    table_areas : list, optional (default: None)
         List of table area strings of the form x1,y1,x2,y2
         where (x1, y1) -> left-top and (x2, y2) -> right-bottom
         in PDF coordinate space.

camelot/parsers/lattice.py

@@ -28,7 +28,7 @@ class Lattice(BaseParser):
 
     Parameters
     ----------
-    table_area : list, optional (default: None)
+    table_areas : list, optional (default: None)
         List of table area strings of the form x1,y1,x2,y2
         where (x1, y1) -> left-top and (x2, y2) -> right-bottom
         in PDF coordinate space.
@@ -76,12 +76,12 @@ class Lattice(BaseParser):
         For more information, refer `PDFMiner docs <https://euske.github.io/pdfminer/>`_.
 
     """
-    def __init__(self, table_area=None, process_background=False,
+    def __init__(self, table_areas=None, process_background=False,
                  line_size_scaling=15, copy_text=None, shift_text=['l', 't'],
                  split_text=False, flag_size=False, line_close_tol=2,
                  joint_close_tol=2, threshold_blocksize=15, threshold_constant=-2,
                  iterations=0, margins=(1.0, 0.5, 0.1), **kwargs):
-        self.table_area = table_area
+        self.table_areas = table_areas
         self.process_background = process_background
         self.line_size_scaling = line_size_scaling
         self.copy_text = copy_text
@@ -244,9 +244,9 @@ def _generate_table_bbox(self):
             self.threshold, direction='horizontal',
             line_size_scaling=self.line_size_scaling, iterations=self.iterations)
 
-        if self.table_area is not None:
+        if self.table_areas is not None:
             areas = []
-            for area in self.table_area:
+            for area in self.table_areas:
                 x1, y1, x2, y2 = area.split(",")
                 x1 = float(x1)
                 y1 = float(y1)

camelot/parsers/stream.py

@@ -26,7 +26,7 @@ class Stream(BaseParser):
 
     Parameters
     ----------
-    table_area : list, optional (default: None)
+    table_areas : list, optional (default: None)
         List of table area strings of the form x1,y1,x2,y2
         where (x1, y1) -> left-top and (x2, y2) -> right-bottom
         in PDF coordinate space.
@@ -50,10 +50,10 @@ class Stream(BaseParser):
         For more information, refer `PDFMiner docs <https://euske.github.io/pdfminer/>`_.
 
     """
-    def __init__(self, table_area=None, columns=None, split_text=False,
+    def __init__(self, table_areas=None, columns=None, split_text=False,
                  flag_size=False, row_close_tol=2, col_close_tol=0,
                  margins=(1.0, 0.5, 0.1), **kwargs):
-        self.table_area = table_area
+        self.table_areas = table_areas
         self.columns = columns
         self._validate_columns()
         self.split_text = split_text
@@ -241,15 +241,15 @@ def _join_columns(cols, text_x_min, text_x_max):
         return cols
 
     def _validate_columns(self):
-        if self.table_area is not None and self.columns is not None:
-            if len(self.table_area) != len(self.columns):
-                raise ValueError("Length of table_area and columns"
+        if self.table_areas is not None and self.columns is not None:
+            if len(self.table_areas) != len(self.columns):
+                raise ValueError("Length of table_areas and columns"
                                  " should be equal")
 
     def _generate_table_bbox(self):
-        if self.table_area is not None:
+        if self.table_areas is not None:
             table_bbox = {}
-            for area in self.table_area:
+            for area in self.table_areas:
                 x1, y1, x2, y2 = area.split(",")
                 x1 = float(x1)
                 y1 = float(y1)

docs/user/advanced.rst

@@ -151,13 +151,13 @@ Specify table areas
 
 Since :ref:`Stream <stream>` treats the whole page as a table, `for now`_, it's useful to specify table boundaries in cases such as `these <../_static/pdf/table_areas.pdf>`__. You can :ref:`plot the text <geometry_text>` on this page and note the top left and bottom right coordinates of the table.
 
-Table areas that you want Camelot to analyze can be passed as a list of comma-separated strings to :meth:`read_pdf() <camelot.read_pdf>`, using the ``table_area`` keyword argument.
+Table areas that you want Camelot to analyze can be passed as a list of comma-separated strings to :meth:`read_pdf() <camelot.read_pdf>`, using the ``table_areas`` keyword argument.
 
 .. _for now: https://github.com/socialcopsdev/camelot/issues/102
 
 ::
 
-    >>> tables = camelot.read_pdf('table_areas.pdf', flavor='stream', table_area=['316,499,566,337'])
+    >>> tables = camelot.read_pdf('table_areas.pdf', flavor='stream', table_areas=['316,499,566,337'])
     >>> tables[0].df
 
 .. csv-table::
@@ -172,7 +172,7 @@ You can pass the column separators as a list of comma-separated strings to :meth
 
 In case you passed a single column separators string list, and no table area is specified, the separators will be applied to the whole page. When a list of table areas is specified and you need to specify column separators as well, **the length of both lists should be equal**. Each table area will be mapped to each column separators' string using their indices.
 
-For example, if you have specified two table areas, ``table_area=['12,23,43,54', '20,33,55,67']``, and only want to specify column separators for the first table, you can pass an empty string for the second table in the column separators' list like this, ``columns=['10,120,200,400', '']``.
+For example, if you have specified two table areas, ``table_areas=['12,23,43,54', '20,33,55,67']``, and only want to specify column separators for the first table, you can pass an empty string for the second table in the column separators' list like this, ``columns=['10,120,200,400', '']``.
 
 Let's get back to the *x* coordinates we got from :ref:`plotting text <geometry_text>` that exists on this `PDF <../_static/pdf/column_separators.pdf>`__, and get the table out!
 

tests/data.py

@@ -81,7 +81,7 @@
     ["", "", "", "", "", "", "", "", "54", "", "", "", "", "", "", "", "", ""]
 ]
 
-data_stream_table_area = [
+data_stream_table_areas = [
     ["", "One Withholding"],
     ["Payroll Period", "Allowance"],
     ["Weekly", "$71.15"],
@@ -261,7 +261,7 @@
     ["Pooled", "38742", "53618", "60601", "86898", "4459", "21918", "27041", "14312", "18519"]
 ]
 
-data_lattice_table_area = [
+data_lattice_table_areas = [
     ["", "", "", "", "", "", "", "", ""],
     ["State", "n", "Literacy Status", "", "", "", "", "", ""],
     ["", "", "Illiterate", "Read & Write", "1-4 std.", "5-8 std.", "9-12 std.", "College", ""],

tests/test_common.py

@@ -45,11 +45,11 @@ def test_stream_table_rotated():
     assert df.equals(tables[0].df)
 
 
-def test_stream_table_area():
-    df = pd.DataFrame(data_stream_table_area)
+def test_stream_table_areas():
+    df = pd.DataFrame(data_stream_table_areas)
 
     filename = os.path.join(testdir, "tabula/us-007.pdf")
-    tables = camelot.read_pdf(filename, flavor="stream", table_area=["320,500,573,335"])
+    tables = camelot.read_pdf(filename, flavor="stream", table_areas=["320,500,573,335"])
     assert df.equals(tables[0].df)
 
 
@@ -100,11 +100,11 @@ def test_lattice_table_rotated():
     assert df.equals(tables[0].df)
 
 
-def test_lattice_table_area():
-    df = pd.DataFrame(data_lattice_table_area)
+def test_lattice_table_areas():
+    df = pd.DataFrame(data_lattice_table_areas)
 
     filename = os.path.join(testdir, "twotables_2.pdf")
-    tables = camelot.read_pdf(filename, table_area=["80,693,535,448"])
+    tables = camelot.read_pdf(filename, table_areas=["80,693,535,448"])
     assert df.equals(tables[0].df)
 
 

tests/test_errors.py

@@ -34,11 +34,11 @@ def test_unsupported_format():
 
 
 def test_stream_equal_length():
-    message = ("Length of table_area and columns"
+    message = ("Length of table_areas and columns"
                " should be equal")
     with pytest.raises(ValueError, message=message):
         tables = camelot.read_pdf(filename, flavor='stream',
-            table_area=['10,20,30,40'], columns=['10,20,30,40', '10,20,30,40'])
+            table_areas=['10,20,30,40'], columns=['10,20,30,40', '10,20,30,40'])
 
 
 def test_no_tables_found():