def write(self, bbox, size):
scx, scy = bbox.width / size[0], -1 * bbox.height / size[1]
at = AffineTransform(scx, 0, 0, scy, bbox.west + scx / 2.0,
bbox.north + scy / 2.0)
f = util.toFile(self.file)
WorldFileWriter(f, at)
def __init__(self, file, schema=None):
f = util.toFile(file)
name = path.splitext(path.basename(file))[0]
from geoscript.workspace import Directory
Layer.__init__(self,
name,
Directory(f.canonicalFile.parent),
schema=schema)
def write(self, raster):
"""
Replaces the content of this raster.
The *raster* parameter is a :class:`Raster` to write out.
"""
if self.mode != 'w':
raise Exception('Raster not created in write mode')
w = self._format.getWriter(util.toFile(self.file))
w.write(raster._coverage, None)
w.dispose()
def write(self, raster):
"""
Replaces the content of this raster.
The *raster* parameter is a :class:`Raster` to write out.
"""
if self.mode != 'w':
raise Exception('Raster not created in write mode')
w = self._format.getWriter(util.toFile(self.file))
w.write(raster._coverage, None)
w.dispose()
def animated(images, file=None, delay=300, loop=False):
"""
Generates an anmiated GIF.
The *images* parameter is a sequence of objects that can be read as
GIF images, such as an array of bytes.
The *file* parameter specifies the file to generate. When omitted the
resulting animated GIF is returned from this function as an array byte.
The *delay* specifies the frame rate in milliseconds.
The *loop* parameter specifies whether the animated GIF should loop
continously.
"""
from com.sun.media.imageioimpl.plugins.gif import GIFImageWriter
from com.sun.media.imageioimpl.plugins.gif import GIFImageWriterSpi
out = ByteArrayOutputStream() if file is None else util.toFile(file)
ios = ImageIO.createImageOutputStream(out)
w = GIFImageWriter(GIFImageWriterSpi())
w.setOutput(ios)
w.prepareWriteSequence(None)
wp = w.getDefaultWriteParam()
wp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT)
wp.setCompressionType('LZW')
wp.setCompressionQuality(0.75)
for img in images:
iis = ImageIO.createImageInputStream(util.toInputStream(img))
ri = ImageIO.read(iis)
md = w.getDefaultImageMetadata(ImageTypeSpecifier(ri), wp)
t = IIOMetadataTree(md)
t.set('GraphicControlExtension', delayTime=delay / 10)
if loop is True:
n = t.set('ApplicationExtensions',
'ApplicationExtension',
applicationID='NETSCAPE',
authenticationCode='2.0')
n.setUserObject(jarray.array([0x1, 0, 0], 'b'))
t.commit()
w.writeToSequence(IIOImage(ri, None, md), wp)
w.endWriteSequence()
ios.flush()
ios.close()
if file is None:
return out.toByteArray()
def animated(images, file=None, delay=300, loop=False):
"""
Generates an anmiated GIF.
The *images* parameter is a sequence of objects that can be read as
GIF images, such as an array of bytes.
The *file* parameter specifies the file to generate. When omitted the
resulting animated GIF is returned from this function as an array byte.
The *delay* specifies the frame rate in milliseconds.
The *loop* parameter specifies whether the animated GIF should loop
continously.
"""
from com.sun.media.imageioimpl.plugins.gif import GIFImageWriter
from com.sun.media.imageioimpl.plugins.gif import GIFImageWriterSpi
out = ByteArrayOutputStream() if file is None else util.toFile(file)
ios = ImageIO.createImageOutputStream(out)
w = GIFImageWriter(GIFImageWriterSpi())
w.setOutput(ios)
w.prepareWriteSequence(None)
wp = w.getDefaultWriteParam()
wp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT)
wp.setCompressionType('LZW')
wp.setCompressionQuality(0.75)
for img in images:
iis = ImageIO.createImageInputStream(util.toInputStream(img))
ri = ImageIO.read(iis)
md = w.getDefaultImageMetadata(ImageTypeSpecifier(ri),wp)
t = IIOMetadataTree(md)
t.set('GraphicControlExtension', delayTime=delay/10)
if loop is True:
n = t.set('ApplicationExtensions', 'ApplicationExtension',
applicationID='NETSCAPE', authenticationCode='2.0')
n.setUserObject(jarray.array([0x1,0, 0], 'b'))
t.commit()
w.writeToSequence(IIOImage(ri, None, md), wp)
w.endWriteSequence()
ios.flush()
ios.close()
if file is None:
return out.toByteArray()
def _encode(self, img, g, size, **opts):
file = opts['file'] if opts.has_key('file') else None
if file:
# write out to file
ImageIO.write(img, self.format, util.toFile(file))
else:
# write to byte array
out = ByteArrayOutputStream()
ImageIO.write(img, self.format, out)
bytes = out.toByteArray()
# check for strencode flag to check whether to return result as raw
# bytes or as string
if opts.has_key('strencode'):
return str(String(bytes, 0, 0, len(bytes)))
return out.toByteArray()
def _encode(self, img, g, size, **opts):
file = opts['file'] if opts.has_key('file') else None
if file:
# write out to file
ImageIO.write(img, self.format, util.toFile(file))
else:
# write to byte array
out = ByteArrayOutputStream()
ImageIO.write(img, self.format, out)
bytes = out.toByteArray()
# check for strencode flag to check whether to return result as raw
# bytes or as string
if opts.has_key('strencode'):
return str(String(bytes, 0, 0, len(bytes)))
return out.toByteArray()
def __init__(self, format, file=None, proj=None, coverage=None, reader=None,
mode='r'):
self.file = file
self._format = format
self._coverage = coverage
self._reader = reader
self.mode = mode
if mode == 'r':
if not coverage:
if not reader:
hints = Hints()
if proj:
proj = Projection(proj)
hints.put(Hints.DEFAULT_COORDINATE_REFERENCE_SYSTEM, proj._crs)
self._reader = format.getReader(util.toFile(file), hints)
self._coverage = self._reader.read(None)
def __init__(self,
format,
file=None,
proj=None,
coverage=None,
reader=None,
mode='r'):
self.file = file
self._format = format
self._coverage = coverage
self._reader = reader
self.mode = mode
if mode == 'r':
if not coverage:
if not reader:
hints = Hints()
if proj:
proj = Projection(proj)
hints.put(Hints.DEFAULT_COORDINATE_REFERENCE_SYSTEM,
proj._crs)
self._reader = format.getReader(util.toFile(file), hints)
self._coverage = self._reader.read(None)
def savepng(self, filename, size=(500, 500)):
ChartUtilities.saveChartAsPNG(util.toFile(filename), self.chart, *size)
def __init__(self, dir=None):
dir = dir or os.getcwd()
params = {'directory': util.toFile(dir)}
Workspace.__init__(self, PropertyDataStoreFactory(), params)
def savepng(self, filename, size=(500,500)): ChartUtilities.saveChartAsPNG(util.toFile(filename), self.chart, *size)
def __init__(self, file):
f = util.toFile(file)
name = path.splitext(path.basename(file))[0]
from geoscript.workspace import Directory
Layer.__init__(self, name, Directory(f.canonicalFile.parent))
def write(self, bbox, size): scx, scy = bbox.width / size[0], -1*bbox.height / size[1] at = AffineTransform(scx, 0, 0, scy, bbox.west+scx/2.0, bbox.north+scy/2.0) f = util.toFile(self.file) WorldFileWriter(f, at)
def read(self):
f = util.toFile(self.file)
if f is None or not f.exists():
raise Exception('No such file %s' % self.file)
return WorldFileReader(f)
def __init__(self, dir=None):
dir = dir or os.getcwd()
params = {'directory': util.toFile(dir)}
Workspace.__init__(self, PropertyDataStoreFactory(), params)
def read(self):
f = util.toFile(self.file)
if f is None or not f.exists():
raise Exception('No such file %s' % self.file)
return WorldFileReader(f)
