def to_rect_png(inp, date=None):
"""
Convert *inp* into a PNG file. Input file can be a step5mask
file (produces greyscale PNG), or if *date* is supplied it can be a
subbox file.
"""
# http://code.google.com/p/pypng/
import png
values = cells(inp, date)
# :todo: move into proper module.
from landmask import centrein
resolution = 0.25
width = 360 / resolution
height = 180 / resolution
assert int(width) == width
assert int(height) == height
width = int(width)
height = int(height)
if not date:
colour = greyscale
else:
colour = colourscale
if colour == greyscale:
black = 0
else:
black = (0, 0, 0)
# an array of rows:
a = [[black] * width for _ in range(height)]
for v, box in values:
v = colour(v)
for x, y in centrein(box, resolution):
a[y][x] = v
# For colour images each row of *a* is of the form:
# [(R,G,B), (R,G,B), ...] we want to flatten it to:
# [R,G,B,R,G,B,...]
if colour != greyscale:
a = [list(itertools.chain(*row)) for row in a]
try:
outpath = inp.name + '.png'
except ValueError:
outpath = 'out.png'
w = png.Writer(width=width,
height=height,
greyscale=(colour == greyscale),
alpha=False,
bitdepth=8)
w.write(open(outpath, 'wb'), a)
def topng(inp, date=None):
"""Convert *inp* into a PNG file. Input file can be a step5mask
file (produces greyscale PNG), or if *date* is supplied it can be a
subbox file."""
# :todo: move into proper module.
from landmask import centrein
resolution = 0.25
width = 360 / resolution
height = 180 / resolution
assert int(width) == width
assert int(height) == height
width = int(width)
height = int(height)
cells = eqarea.grid8k()
if not date:
# Mask file in text format.
values = gio.maskboxes(inp, cells)
colour = greyscale
isgrey = True
else:
values = extractdate(inp, cells, date)
colour = colourscale
isgrey = False
if isgrey:
black = 0
else:
black = (0, 0, 0)
# an array of rows:
a = [[black] * width for _ in range(height)]
for v, box in values:
v = colour(v)
for x, y in centrein(box, resolution):
a[y][x] = v
# For colour images each row of *a* is of the form:
# [(R,G,B), (R,G,B), ...] we want to flatten it to:
# [R,G,B,R,G,B,...]
if not isgrey:
a = [list(itertools.chain(*row)) for row in a]
try:
outpath = inp.name + '.png'
except:
outpath = 'out.png'
w = png.Writer(width=width,
height=height,
greyscale=isgrey,
alpha=False,
bitdepth=8)
w.write(open(outpath, 'wb'), a)
def to_rect_png(inp, date=None):
"""
Convert *inp* into a PNG file. Input file can be a step5mask
file (produces greyscale PNG), or if *date* is supplied it can be a
subbox file.
"""
# http://code.google.com/p/pypng/
import png
values = cells(inp, date)
# :todo: move into proper module.
from landmask import centrein
resolution = 0.25
width = 360/resolution
height = 180/resolution
assert int(width) == width
assert int(height) == height
width = int(width)
height = int(height)
if not date:
colour = greyscale
else:
colour = colourscale
if colour == greyscale:
black = 0
else:
black = (0,0,0)
# an array of rows:
a = [[black]*width for _ in range(height)]
for v,box in values:
v = colour(v)
for x,y in centrein(box, resolution):
a[y][x] = v
# For colour images each row of *a* is of the form:
# [(R,G,B), (R,G,B), ...] we want to flatten it to:
# [R,G,B,R,G,B,...]
if colour != greyscale:
a = [list(itertools.chain(*row)) for row in a]
try:
outpath = inp.name + '.png'
except:
outpath = 'out.png'
w = png.Writer(width=width, height=height,
greyscale=(colour == greyscale), alpha=False,
bitdepth=8)
w.write(open(outpath, 'wb'), a)
def topng(inp, date=None):
"""Convert *inp* into a PNG file. Input file can be a step5mask
file (produces greyscale PNG), or if *date* is supplied it can be a
subbox file."""
# :todo: move into proper module.
from landmask import centrein
resolution = 0.25
width = 360 / resolution
height = 180 / resolution
assert int(width) == width
assert int(height) == height
width = int(width)
height = int(height)
cells = eqarea.grid8k()
if not date:
# Mask file in text format.
values = gio.maskboxes(inp, cells)
colour = greyscale
isgrey = True
else:
values = extractdate(inp, cells, date)
colour = colourscale
isgrey = False
if isgrey:
black = 0
else:
black = (0, 0, 0)
# an array of rows:
a = [[black] * width for _ in range(height)]
for v, box in values:
v = colour(v)
for x, y in centrein(box, resolution):
a[y][x] = v
# For colour images each row of *a* is of the form:
# [(R,G,B), (R,G,B), ...] we want to flatten it to:
# [R,G,B,R,G,B,...]
if not isgrey:
a = [list(itertools.chain(*row)) for row in a]
try:
outpath = inp.name + ".png"
except:
outpath = "out.png"
w = png.Writer(width=width, height=height, greyscale=isgrey, alpha=False, bitdepth=8)
w.write(open(outpath, "wb"), a)
