def shaperead(fn, encoding=None):
'''
Returns a layer readed from a shape file.
:param fn: (*string*) The shape file name (.shp).
:param encoding: (*string*) Encoding
:returns: (*MILayer*) The created layer.
'''
if not fn.endswith('.shp'):
fn = fn + '.shp'
if not os.path.exists(fn):
fn = os.path.join(migl.get_map_folder(), fn)
if os.path.exists(fn):
try:
if encoding is None:
encoding = IOUtil.encodingDetectShp(fn)
if encoding == 'ISO8859_1':
encoding = 'UTF-8'
layer = MILayer(MapDataManage.readMapFile_ShapeFile(fn, encoding))
if not layer.legend() is None:
lb = layer.legend().getLegendBreaks()[0]
if lb.getBreakType() == BreakTypes.PolygonBreak:
lb.setDrawFill(False)
return layer
except:
raise
else:
print 'File not exists: ' + fn
raise
def geoshow(self, layer, **kwargs):
'''
Plot a layer in 3D axes.
:param layer: (*MILayer*) The layer to be plotted.
:returns: Graphics.
'''
ls = kwargs.pop('symbolspec', None)
offset = kwargs.pop('offset', 0)
xshift = kwargs.pop('xshift', 0)
if isinstance(layer, basestring):
fn = layer
if not fn.endswith('.shp'):
fn = fn + '.shp'
if not os.path.exists(fn):
fn = os.path.join(migl.get_map_folder(), fn)
if os.path.exists(fn):
encoding = kwargs.pop('encoding', None)
layer = migeo.shaperead(fn, encoding)
else:
raise IOError('File not exists: ' + fn)
layer = layer.layer
if layer.getLayerType() == LayerTypes.VectorLayer:
if ls is None:
ls = layer.getLegendScheme()
if layer.getLegendScheme().getBreakNum() == 1:
lb = layer.getLegendScheme().getLegendBreaks().get(0)
btype = lb.getBreakType()
geometry = 'point'
if btype == BreakTypes.PolylineBreak:
geometry = 'line'
elif btype == BreakTypes.PolygonBreak:
geometry = 'polygon'
if not kwargs.has_key('facecolor'):
kwargs['facecolor'] = None
if not kwargs.has_key('edgecolor'):
kwargs['edgecolor'] = 'k'
lb, isunique = plotutil.getlegendbreak(geometry, **kwargs)
ls.getLegendBreaks().set(0, lb)
else:
plotutil.setlegendscheme(ls, **kwargs)
layer.setLegendScheme(ls)
graphics = GraphicFactory.createGraphicsFromLayer(
layer, offset, xshift)
else:
interpolation = kwargs.pop('interpolation', None)
graphics = JOGLUtil.createTexture(self.figure.getGL2(), layer,
offset, xshift, interpolation)
visible = kwargs.pop('visible', True)
if visible:
self.add_graphic(graphics)
return graphics
def georead(fn):
'''
Returns a layer readed from a supported geo-data file.
:param fn: (*string*) The supported geo-data file name (shape file, wmp, geotiff, image, bil...).
:returns: (*MILayer*) The created layer.
'''
if not os.path.exists(fn):
fn = os.path.join(migl.get_map_folder(), fn)
if os.path.exists(fn):
try:
layer = MILayer(MapDataManage.loadLayer(fn))
if not layer.legend() is None:
lb = layer.legend().getLegendBreaks()[0]
if lb.getBreakType() == BreakTypes.PolygonBreak:
lb.setDrawFill(False)
return layer
except:
raise
else:
print 'File not exists: ' + fn
raise IOError
