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Refactor code in plotting

pull/153/head
Frh 2020-04-21 13:57:12 -07:00
parent 1ccaa0630d
commit 310a8cd80a
1 changed files with 27 additions and 36 deletions
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63
camelot/plotting.py
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@ -9,6 +9,23 @@ else:
_HAS_MPL = True _HAS_MPL = True
def draw_pdf(table, ax, to_pdf_scale=True):
"""Draw the content of the table's source pdf into the passed subplot
Parameters
----------
table : camelot.core.Table
fig : matplotlib.axes.Axes
"""
img = table.get_pdf_image()
if to_pdf_scale:
ax.imshow(img, extent=(0, table.pdf_size[0], 0, table.pdf_size[1]))
else:
ax.imshow(img)
class PlotMethods(object): class PlotMethods(object):
def __call__(self, table, kind="text", filename=None): def __call__(self, table, kind="text", filename=None):
"""Plot elements found on PDF page based on kind """Plot elements found on PDF page based on kind
@ -61,6 +78,7 @@ class PlotMethods(object):
""" """
fig = plt.figure() fig = plt.figure()
ax = fig.add_subplot(111, aspect="equal") ax = fig.add_subplot(111, aspect="equal")
draw_pdf(table, ax)
xs, ys = [], [] xs, ys = [], []
for t in table._text: for t in table._text:
xs.extend([t[0], t[2]]) xs.extend([t[0], t[2]])
@ -75,8 +93,6 @@ class PlotMethods(object):
) )
ax.set_xlim(min(xs) - 10, max(xs) + 10) ax.set_xlim(min(xs) - 10, max(xs) + 10)
ax.set_ylim(min(ys) - 10, max(ys) + 10) ax.set_ylim(min(ys) - 10, max(ys) + 10)
img = table.get_pdf_image()
ax.imshow(img, extent=(0, table.pdf_size[0], 0, table.pdf_size[1]))
return fig return fig
@staticmethod @staticmethod
@ -95,6 +111,7 @@ class PlotMethods(object):
""" """
fig = plt.figure() fig = plt.figure()
ax = fig.add_subplot(111, aspect="equal") ax = fig.add_subplot(111, aspect="equal")
draw_pdf(table, ax)
for row in table.cells: for row in table.cells:
for cell in row: for cell in row:
if cell.left: if cell.left:
@ -105,9 +122,6 @@ class PlotMethods(object):
ax.plot([cell.lt[0], cell.rt[0]], [cell.lt[1], cell.rt[1]]) ax.plot([cell.lt[0], cell.rt[0]], [cell.lt[1], cell.rt[1]])
if cell.bottom: if cell.bottom:
ax.plot([cell.lb[0], cell.rb[0]], [cell.lb[1], cell.rb[1]]) ax.plot([cell.lb[0], cell.rb[0]], [cell.lb[1], cell.rb[1]])
img = table.get_pdf_image()
ax.imshow(img, extent=(0, table.pdf_size[0], 0, table.pdf_size[1]))
return fig return fig
@staticmethod @staticmethod
@ -124,15 +138,15 @@ class PlotMethods(object):
fig : matplotlib.fig.Figure fig : matplotlib.fig.Figure
""" """
fig = plt.figure()
img = table.get_pdf_image() ax = fig.add_subplot(111, aspect="equal")
_FOR_LATTICE = table.flavor == "lattice" _FOR_LATTICE = table.flavor == "lattice"
draw_pdf(table, ax, to_pdf_scale=not _FOR_LATTICE)
if _FOR_LATTICE: if _FOR_LATTICE:
table_bbox = table._bbox_unscaled table_bbox = table._bbox_unscaled
else: else:
table_bbox = {table._bbox: None} table_bbox = {table._bbox: None}
fig = plt.figure()
ax = fig.add_subplot(111, aspect="equal")
xs, ys = [], [] xs, ys = [], []
if not _FOR_LATTICE: if not _FOR_LATTICE:
@ -157,27 +171,8 @@ class PlotMethods(object):
ys.extend([t[1], t[3]]) ys.extend([t[1], t[3]])
ax.set_xlim(min(xs) - 10, max(xs) + 10) ax.set_xlim(min(xs) - 10, max(xs) + 10)
ax.set_ylim(min(ys) - 10, max(ys) + 10) ax.set_ylim(min(ys) - 10, max(ys) + 10)
if _FOR_LATTICE:
ax.imshow(img)
else:
ax.imshow(img, extent=(0, table.pdf_size[0], 0, table.pdf_size[1]))
return fig return fig
@staticmethod
def draw_pdf(table, ax):
"""Draw the content of the table's source pdf into the passed subplot
Parameters
----------
table : camelot.core.Table
fig : matplotlib.axes.Axes
"""
img = table.get_pdf_image()
ax.imshow(img, extent=(0, table.pdf_size[0], 0, table.pdf_size[1]))
@staticmethod @staticmethod
def textedge(table): def textedge(table):
"""Generates a plot for relevant textedges. """Generates a plot for relevant textedges.
@ -193,7 +188,7 @@ class PlotMethods(object):
""" """
fig = plt.figure() fig = plt.figure()
ax = fig.add_subplot(111, aspect="equal") ax = fig.add_subplot(111, aspect="equal")
PlotMethods.draw_pdf(table, ax) draw_pdf(table, ax)
xs, ys = [], [] xs, ys = [], []
for t in table._text: for t in table._text:
xs.extend([t[0], t[2]]) xs.extend([t[0], t[2]])
@ -214,7 +209,6 @@ class PlotMethods(object):
else: else:
for te in table._textedges: for te in table._textedges:
ax.plot([te.x, te.x], [te.y0, te.y1]) ax.plot([te.x, te.x], [te.y0, te.y1])
return fig return fig
@staticmethod @staticmethod
@ -231,10 +225,10 @@ class PlotMethods(object):
fig : matplotlib.fig.Figure fig : matplotlib.fig.Figure
""" """
img = table.get_pdf_image()
table_bbox = table._bbox_unscaled
fig = plt.figure() fig = plt.figure()
ax = fig.add_subplot(111, aspect="equal") ax = fig.add_subplot(111, aspect="equal")
draw_pdf(table, ax, to_pdf_scale=False)
table_bbox = table._bbox_unscaled
x_coord = [] x_coord = []
y_coord = [] y_coord = []
for k in table_bbox.keys(): for k in table_bbox.keys():
@ -242,7 +236,6 @@ class PlotMethods(object):
x_coord.append(coord[0]) x_coord.append(coord[0])
y_coord.append(coord[1]) y_coord.append(coord[1])
ax.plot(x_coord, y_coord, "ro") ax.plot(x_coord, y_coord, "ro")
ax.imshow(img)
return fig return fig
@staticmethod @staticmethod
@ -261,12 +254,10 @@ class PlotMethods(object):
""" """
fig = plt.figure() fig = plt.figure()
ax = fig.add_subplot(111, aspect="equal") ax = fig.add_subplot(111, aspect="equal")
draw_pdf(table, ax)
vertical, horizontal = table._segments vertical, horizontal = table._segments
for v in vertical: for v in vertical:
ax.plot([v[0], v[2]], [v[1], v[3]]) ax.plot([v[0], v[2]], [v[1], v[3]])
for h in horizontal: for h in horizontal:
ax.plot([h[0], h[2]], [h[1], h[3]]) ax.plot([h[0], h[2]], [h[1], h[3]])
img = table.get_pdf_image()
ax.imshow(img, extent=(0, table.pdf_size[0], 0, table.pdf_size[1]))
return fig return fig