def test_text_symbolizer():
s = mapnik.TextSymbolizer()
eq_(s.comp_op, mapnik.CompositeOp.src_over)
eq_(s.clip, True)
eq_(s.halo_rasterizer, mapnik.halo_rasterizer.FULL)
# https://github.com/mapnik/mapnik/issues/1420
eq_(s.text_transform, mapnik.text_transform.NONE)
# https://github.com/mapnik/mapnik/issues/1427
eq_(s.wrap_char, ord(' '))
eq_(s.wrap_character, ord(' '))
s.wrap_char = ord('\n')
eq_(s.wrap_char, ord('\n'))
eq_(s.wrap_character, ord('\n'))
eq_(s.format.wrap_character, ord('\n'))
s.wrap_character = ord('\r')
eq_(s.wrap_char, ord('\r'))
eq_(s.wrap_character, ord('\r'))
eq_(s.format.wrap_character, ord('\r'))
s.format.wrap_character = ord(' ')
eq_(s.wrap_char, ord(' '))
eq_(s.wrap_character, ord(' '))
eq_(s.format.wrap_character, ord(' '))
# old args required method
ts = mapnik.TextSymbolizer(mapnik.Expression('[Field_Name]'), 'Font Name',
8, mapnik.Color('black'))
# eq_(str(ts.name), str(mapnik2.Expression('[Field_Name]'))) name field is no longer supported
eq_(ts.format.face_name, 'Font Name')
eq_(ts.format.text_size, 8)
eq_(ts.format.fill, mapnik.Color('black'))
eq_(ts.properties.label_placement, mapnik.label_placement.POINT_PLACEMENT)
eq_(ts.properties.horizontal_alignment, mapnik.horizontal_alignment.AUTO)
def labStyle(self, field, font="DejaVu Sans Book", size=10, clr="#000000"):
labelStyle = mapnik.Style()
rule = mapnik.Rule()
symbol = mapnik.TextSymbolizer(field, font, size, mapnik.Color(clr))
rule.symbols.append(symbol)
labelStyle.rules.append(rule)
return labelStyle
def text(expression, size, color, fontVariant=None, haloRadius=None, halo=mapnik.Color(255, 255, 200), transform=None,
placement=None, minPathLength=None):
font = 'DejaVu Sans Book'
if fontVariant is not None and fontVariant == 'bold':
font = 'DejaVu Sans Bold'
symbolizer = mapnik.TextSymbolizer(expression, font, size, color)
symbolizer.label_placement = mapnik.label_placement.POINT_PLACEMENT
if placement is not None and placement == 'line':
symbolizer.label_placement = mapnik.label_placement.LINE_PLACEMENT
if halo is not None:
symbolizer.halo_fill = halo
if haloRadius is not None:
symbolizer.halo_radius = haloRadius
symbolizer.placement_type = 'simple'
symbolizer.avoid_edges = True
symbolizer.allow_overlap = False
if transform is not None:
symbolizer.text_transform = transform
if minPathLength is not None:
symbolizer.minimum_distance = minPathLength
symbolizer.minimum_path_length = minPathLength
return symbolizer
def getTextStyle(fieldname):
style = mapnik.Style() # style object to hold rules
rule = mapnik.Rule() # rule object to hold symbolizers
# print(help(mapnik.TextSymbolizer))
print(mapnik.mapnik_version())
symbolizer = mapnik.TextSymbolizer(
mapnik.Expression('[' + fieldname + ']'), 'DejaVu Sans Book', 10,
mapnik.Color('black'))
# symbolizer = mapnik.TextSymbolizer()
# print(symbolizer, dir(symbolizer))
# print(symbolizer.properties.format_tree.text)
# symbolizer.face_name = mapnik.FormattingText('DejaVu Sans Book')
# symbolizer.face_name = 'DejaVu Sans Book'
# symbolizer.properties.format_tree = mapnik.FormattingText('DejaVu Sans Book')
# symbolizer.name = mapnik.Expression('['+fieldname+']')
symbolizer.halo_fill = mapnik.Color('white')
symbolizer.halo_radius = 1
symbolizer.label_placement = label_placement.LINE_PLACEMENT # POINT_PLACEMENT is default
symbolizer.allow_overlap = False
symbolizer.avoid_edges = True
rule.symbols.append(symbolizer)
style.rules.append(rule)
return style
def __add_manholes(self, layers, styles):
"Add manhole layer and styles."
# Select the manholes that are part of this sewerage.
manholes = Manhole.objects.filter(sewerage__pk=self.id)
# Define a style.
style = mapnik.Style()
# Style the `normal` manholes.
rule = mapnik.Rule()
rule.filter = mapnik.Filter("[sink] != 1")
symbol = mapnik.PointSymbolizer()
symbol.allow_overlap = True
rule.symbols.append(symbol)
style.rules.append(rule)
# Style the sink.
rule = mapnik.Rule()
rule.filter = mapnik.Filter("[sink] = 1")
symbol = mapnik.PointSymbolizer(
str(finders.find("lizard_riool/sink.png")), "png", 8, 8
)
symbol.allow_overlap = True
rule.symbols.append(symbol)
style.rules.append(rule)
# Add labels.
rule = mapnik.Rule()
rule.max_scale = 1700
symbol = mapnik.TextSymbolizer(
'code', 'DejaVu Sans Book', 10, mapnik.Color('black')
)
symbol.allow_overlap = True
symbol.label_placement = mapnik.label_placement.POINT_PLACEMENT
symbol.vertical_alignment = mapnik.vertical_alignment.TOP
symbol.displacement(0, -5) # slightly above
rule.symbols.append(symbol)
style.rules.append(rule)
# Setup datasource.
params = default_database_params()
params['table'] = "({}) data".format(manholes.query)
datasource = mapnik.PostGIS(**params)
# Define layer.
layer = mapnik.Layer('manholeLayer')
layer.datasource = datasource
layer.maxzoom = 35000
layer.styles.append('manholeStyle')
layers.append(layer)
styles['manholeStyle'] = style
def create_grid_map(width,height):
places_ds = mapnik.PointDatasource()
places_ds.add_point(143.10,-38.60,'Name','South East')
places_ds.add_point(142.48,-38.60,'Name','South West')
places_ds.add_point(142.48,-38.38,'Name','North West')
places_ds.add_point(143.10,-38.38,'Name','North East')
s = mapnik.Style()
r = mapnik.Rule()
#symb = mapnik.PointSymbolizer()
symb = mapnik.MarkersSymbolizer()
symb.allow_overlap = True
r.symbols.append(symb)
label = mapnik.TextSymbolizer(mapnik.Expression('[Name]'),
'DejaVu Sans Book',
10,
mapnik.Color('black')
)
label.allow_overlap = True
label.displacement = (0,-10)
#r.symbols.append(label)
s.rules.append(r)
lyr = mapnik.Layer('Places')
lyr.datasource = places_ds
lyr.styles.append('places_labels')
m = mapnik.Map(width,height)
m.append_style('places_labels',s)
m.layers.append(lyr)
return m
def create_map_and_append_symbolyzer(sym):
srs = '+init=epsg:32630'
lyr = mapnik.Layer('arrows')
try:
lyr.datasource = mapnik.Shapefile(file='../data/shp/arrows.shp', )
lyr.srs = srs
_map = mapnik.Map(256, 256, srs)
style = mapnik.Style()
rule = mapnik.Rule()
rule.symbols.append(sym)
# put a test symbolizer to see what is the azimuth being read
ts = mapnik.TextSymbolizer(mapnik.Expression('[azimuth]'),
"DejaVu Sans Book", 10,
mapnik.Color("black"))
ts.allow_overlap = True
rule.symbols.append(ts)
style.rules.append(rule)
_map.append_style('foo', style)
lyr.styles.append('foo')
_map.layers.append(lyr)
_map.zoom_to_box(mapnik.Box2d(0, 0, 8, 8))
return _map
except RuntimeError, e:
# only test datasources that we have installed
if not 'Could not create datasource' in str(e):
raise RuntimeError(e)
def test_render_grid():
places_ds = mapnik.PointDatasource()
places_ds.add_point(143.10,-38.60,'Name','South East')
places_ds.add_point(142.48,-38.60,'Name','South West')
places_ds.add_point(142.48,-38.38,'Name','North West')
places_ds.add_point(143.10,-38.38,'Name','North East')
s = mapnik.Style()
r = mapnik.Rule()
#symb = mapnik.PointSymbolizer()
symb = mapnik.MarkersSymbolizer()
symb.allow_overlap = True
r.symbols.append(symb)
label = mapnik.TextSymbolizer(mapnik.Expression('[Name]'),
'DejaVu Sans Book',
10,
mapnik.Color('black')
)
label.allow_overlap = True
label.displacement = (0,-10)
#r.symbols.append(label)
s.rules.append(r)
lyr = mapnik.Layer('Places')
lyr.datasource = places_ds
lyr.styles.append('places_labels')
m = mapnik.Map(256,256)
m.append_style('places_labels',s)
m.layers.append(lyr)
ul_lonlat = mapnik.Coord(142.30,-38.20)
lr_lonlat = mapnik.Coord(143.40,-38.80)
m.zoom_to_box(mapnik.Box2d(ul_lonlat,lr_lonlat))
grid = mapnik.render_grid(m,0,key='Name',resolution=4,fields=['Name'])
eq_(grid,grid_correct)
eq_(resolve(grid,0,0),None)
# check every pixel of the nw symbol
expected = {"Name": "North West"}
# top row
eq_(resolve(grid,23,9),expected)
eq_(resolve(grid,23,10),expected)
eq_(resolve(grid,23,11),expected)
# core
eq_(resolve(grid,24,8),expected)
eq_(resolve(grid,24,9),expected)
eq_(resolve(grid,24,10),expected)
eq_(resolve(grid,24,11),expected)
eq_(resolve(grid,24,12),expected)
eq_(resolve(grid,25,8),expected)
eq_(resolve(grid,25,9),expected)
eq_(resolve(grid,25,10),expected)
eq_(resolve(grid,25,11),expected)
eq_(resolve(grid,25,12),expected)
# bottom row
eq_(resolve(grid,26,9),expected)
eq_(resolve(grid,26,10),expected)
eq_(resolve(grid,26,11),expected)
def test_textsymbolizer_init():
ts = mapnik.TextSymbolizer(mapnik.Expression('[Field_Name]'), 'Font Name',
8, mapnik.Color('black'))
eq_(str(ts.name), str(mapnik.Expression('[Field_Name]')))
eq_(ts.face_name, 'Font Name')
eq_(ts.text_size, 8)
eq_(ts.fill, mapnik.Color('black'))
eq_(ts.label_placement, mapnik.label_placement.POINT_PLACEMENT)
def test_textsymbolizer_init():
ts = mapnik.TextSymbolizer(mapnik.Expression('[Field_Name]'), 'Font Name',
8, mapnik.Color('black'))
# eq_(str(ts.name), str(mapnik2.Expression('[Field_Name]'))) name field is no longer supported
eq_(ts.format.face_name, 'Font Name')
eq_(ts.format.text_size, 8)
eq_(ts.format.fill, mapnik.Color('black'))
eq_(ts.properties.label_placement, mapnik.label_placement.POINT_PLACEMENT)
eq_(ts.properties.horizontal_alignment, mapnik.horizontal_alignment.AUTO)
def render_tile(layer, z, x, y):
"""
Render the tile using mapnik.
"""
m = mapnik.Map(TILE_WIDTH, TILE_WIDTH)
s = mapnik.Style()
r = mapnik.Rule()
#line_symbolizer = mapnik.PointSymbolizer()
line_symbolizer = mapnik.PolygonSymbolizer()
line_symbolizer.fill = mapnik.Color('yellow')
line_symbolizer.fill_opacity = 0.7
#line_symbolizer.allow_overlap = True
#line_symbolizer.transform="scale(5,5)"
r.symbols.append(line_symbolizer)
label = mapnik.TextSymbolizer(mapnik.Expression('[nama]'),
'DejaVu Sans Book', 24, mapnik.Color('red'))
label.halo_radius = 1
label.avoid_edges = False
r.symbols.append(label)
s.rules.append(r)
m.append_style('My Style', s)
# Initialize layer from PostGIS table
ds = mapnik.PostGIS(**POSTGIS_TABLE)
layer2 = mapnik.Layer(LAYER_NAME)
layer2.datasource = ds
layer2.styles.append('My Style')
m.layers.append(layer2)
m.zoom_all()
# ds = mapnik.Shapefile(file='C:\Users\ICS\Documents\kuliah\gis\gis mapnik\pantai indonesia\IND_PNT_polyline.shp')
# layer = mapnik.Layer(LAYER_NAME)
# layer.datasource = ds
# layer.styles.append('My Style')
# m.layers.append(layer)
# m.zoom_all()
renderer = TiledMapRenderer(m)
im = renderer.render_tile(z, x, y)
# im = mapnik.Image(TILE_WIDTH, TILE_WIDTH)
# mapnik.render(m, im, 13, 0, 0)
# im.save('tmp/bla.png')
# mapnik.render_to_file(m,'aaa.png', 'png')
return im.tostring('png'), 200, {'Content-type': 'image/png'}
def test_textsymbolizer_pickle():
ts = mapnik.TextSymbolizer(mapnik.Expression('[Field_Name]'), 'Font Name',
8, mapnik.Color('black'))
eq_(str(ts.name), str(mapnik.Expression('[Field_Name]')))
eq_(ts.face_name, 'Font Name')
eq_(ts.text_size, 8)
eq_(ts.fill, mapnik.Color('black'))
raise Todo("text_symbolizer pickling currently disabled")
ts2 = pickle.loads(pickle.dumps(ts, pickle.HIGHEST_PROTOCOL))
eq_(ts.name, ts2.name)
eq_(ts.face_name, ts2.face_name)
eq_(ts.allow_overlap, ts2.allow_overlap)
eq_(ts.displacement, ts2.displacement)
eq_(ts.anchor, ts2.anchor)
eq_(ts.fill, ts2.fill)
eq_(ts.force_odd_labels, ts2.force_odd_labels)
eq_(ts.halo_fill, ts2.halo_fill)
eq_(ts.halo_radius, ts2.halo_radius)
eq_(ts.label_placement, ts2.label_placement)
eq_(ts.minimum_distance, ts2.minimum_distance)
eq_(ts.text_ratio, ts2.text_ratio)
eq_(ts.text_size, ts2.text_size)
eq_(ts.wrap_width, ts2.wrap_width)
eq_(ts.vertical_alignment, ts2.vertical_alignment)
eq_(ts.label_spacing, ts2.label_spacing)
eq_(ts.label_position_tolerance, ts2.label_position_tolerance)
# 22.5 * M_PI/180.0 initialized by default
assert_almost_equal(s.max_char_angle_delta, 0.39269908169872414)
eq_(ts.wrap_character, ts2.wrap_character)
eq_(ts.text_transform, ts2.text_transform)
eq_(ts.line_spacing, ts2.line_spacing)
eq_(ts.character_spacing, ts2.character_spacing)
# r1341
eq_(ts.wrap_before, ts2.wrap_before)
eq_(ts.horizontal_alignment, ts2.horizontal_alignment)
eq_(ts.justify_alignment, ts2.justify_alignment)
eq_(ts.opacity, ts2.opacity)
# r2300
eq_(s.minimum_padding, 0.0)
raise Todo(
"FontSet pickling support needed: http://trac.mapnik.org/ticket/348")
eq_(ts.fontset, ts2.fontset)
def to_mapnik(self):
# note: these match css in Mapnik2
convert_enums = {'uppercase': mapnik.text_convert.TOUPPER,
'lowercase': mapnik.text_convert.TOLOWER
}
sym = mapnik.TextSymbolizer(self.name, self.face_name, self.size,
mapnik.Color(str(self.color)))
sym.wrap_width = self.wrap_width or sym.wrap_width
sym.label_spacing = self.label_spacing or sym.label_spacing
sym.label_position_tolerance = self.label_position_tolerance or sym.label_position_tolerance
sym.max_char_angle_delta = self.max_char_angle_delta or sym.max_char_angle_delta
sym.halo_fill = mapnik.Color(str(self.halo_color)) if self.halo_color else sym.halo_fill
sym.halo_radius = self.halo_radius or sym.halo_radius
sym.character_spacing = self.character_spacing or sym.character_spacing
sym.line_spacing = self.line_spacing or sym.line_spacing
sym.avoid_edges = self.avoid_edges.value if self.avoid_edges else sym.avoid_edges
sym.force_odd_labels = self.force_odd_labels.value if self.force_odd_labels else sym.force_odd_labels
sym.minimum_distance = self.minimum_distance or sym.minimum_distance
sym.allow_overlap = self.allow_overlap.value if self.allow_overlap else sym.allow_overlap
if self.label_placement:
sym.label_placement = mapnik.label_placement.names.get(self.label_placement,mapnik.label_placement.POINT_PLACEMENT)
# note-renamed in Mapnik2 to 'text_transform'
if self.text_transform:
sym.text_convert = convert_enums.get(self.text_transform,mapnik.text_convert.NONE)
if self.vertical_alignment:
# match the logic in load_map.cpp for conditionally applying vertical_alignment default
default_vertical_alignment = mapnik.vertical_alignment.MIDDLE
if self.dx > 0.0:
default_vertical_alignment = mapnik.vertical_alignment.BOTTOM
elif self.dy < 0.0:
default_vertical_alignment = mapnik.vertical_alignment.TOP
sym.vertical_alignment = mapnik.vertical_alignment.names.get(self.vertical_alignment,
default_vertical_alignment)
if self.justify_alignment:
sym.justify_alignment = mapnik.justify_alignment.names.get(self.justify_alignment,
mapnik.justify_alignment.MIDDLE)
if self.fontset:
# sym.fontset = str(self.fontset)
# not viable via python
sys.stderr.write('\nCascadenik debug: Warning, FontSets will be ignored as they are not yet supported in Mapnik via Python...\n')
sym.displacement(self.dx or 0.0, self.dy or 0.0)
return sym
def to_mapnik(self):
sym = mapnik.TextSymbolizer(self.name, self.face_name, self.size,
mapnik.Color(str(self.color)))
sym.wrap_width = self.wrap_width or sym.wrap_width
sym.label_spacing = self.spacing or sym.label_spacing
sym.label_position_tolerance = self.label_position_tolerance or sym.label_position_tolerance
sym.max_char_angle_delta = self.max_char_angle_delta or sym.max_char_angle_delta
sym.halo_fill = self.halo_color or sym.halo_fill
sym.halo_radius = self.halo_radius or sym.halo_radius
sym.avoid_edges = self.avoid_edges or sym.avoid_edges
sym.minimum_distance = self.min_distance or sym.minimum_distance
sym.allow_overlap = self.allow_overlap or sym.allow_overlap
sym.displacement(self.dx or 0, self.dy or 0)
return sym
def mapnik_style(self):
import mapnik
polygon_style = mapnik.Style()
ps = mapnik.PolygonSymbolizer(mapnik.Color('#551A8B'))
ps.fill_opacity = 0.9
ls = mapnik.LineSymbolizer(mapnik.Color('#ffffff'),0.75)
ls.stroke_opacity = 0.9
ts = mapnik.TextSymbolizer('name','DejaVu Sans Bold',11,mapnik.Color('#555555'))
ts.displacement(15,15)
ts.halo_fill = mapnik.Color('white')
ts.halo_radius = 1
ts.opacity = 0.5
r = mapnik.Rule()
r.symbols.append(ps)
r.symbols.append(ls)
r.symbols.append(ts)
polygon_style.rules.append(r)
return polygon_style
def test_loading_fontset_from_python():
m = mapnik.Map(256, 256)
fset = mapnik.FontSet('foo')
fset.add_face_name('Comic Sans')
fset.add_face_name('Papyrus')
eq_(fset.name, 'foo')
fset.name = 'my-set'
eq_(fset.name, 'my-set')
m.append_fontset('my-set', fset)
sty = mapnik.Style()
rule = mapnik.Rule()
tsym = mapnik.TextSymbolizer()
eq_(tsym.fontset, None)
tsym.fontset = fset
rule.symbols.append(tsym)
sty.rules.append(rule)
m.append_style('Style', sty)
serialized_map = mapnik.save_map_to_string(m)
eq_('fontset-name="my-set"' in serialized_map, True)
m = mapnik.Map(600, 300)
m.background = mapnik.Color('steelblue')
s = mapnik.Style()
r = mapnik.Rule()
polygon_symbolizer = mapnik.PolygonSymbolizer()
polygon_symbolizer.fill = mapnik.Color('#fdf704')
r.symbols.append(polygon_symbolizer)
line_symbolizer = mapnik.LineSymbolizer()
line_symbolizer = mapnik.LineSymbolizer(mapnik.Color('white'), 1)
line_symbolizer.stroke_width = 10.0
r.symbols.append(line_symbolizer)
basinsLabels = mapnik.TextSymbolizer(mapnik.Expression('[NAME]'),
'DejaVu Sans Bold', 5,
mapnik.Color('black'))
basinsLabels.halo_fill = mapnik.Color('yellow')
basinsLabels.halo_radius = 2
r.symbols.append(basinsLabels)
point_sym = mapnik.PointSysmbolyzer()
point_sym.allow_overlap = TRUE
r.symbols.append(point_sym)
s.rules.append(r)
m.append_style('Yogi', s)
ds = mapnik.Shapefile(file="provinsiindonesia/INDONESIA_PROP.shp")
layer = mapnik.Layer('world')
layer.datasource = ds
def draw_district_outline(statefp, state, district, shpfeature, map_size, contextmap) :
# Create an image with district outlines and shading over the parts of the map
# in other districts or other states. Also compute our desired bounding box.
# Get bounding box of this map, which will be a little larger than the boudning box of the district.
long_min, long_max, lat_min, lat_max = shpfeature.GetGeometryRef().GetEnvelope()
margin = 0.06
if contextmap :
margin = 1.5
d_long = long_max-long_min
d_lat = lat_max-lat_min
long_min -= d_long*margin
long_max += d_long*margin
lat_min -= d_lat*margin
lat_max += d_lat*margin
# Choose an aspect ratio for the final image that is a good match for
# the shape of the district. We have two choices. We could use nice-looking
# aspect ratios or we could use aspect ratios that match common sizes of
# paper so that the map can be printed nicely.
good_aspect_ratios = [
(3.0, 3.0/1.0), # 8.5x17 tabloid landscape
(1.5, 16.0/9.0), # HD widescreen
(1.25, 11.0/8.5), # 8.5x11 letter landscape
(1/1.25, 1.0/1.0), # square
(1/1.5, 8.5/11.0), # 8.5x11 letter portrait
(0, 8.5/17.0), # 8.5x17 tabloid portrait
]
for threshold, ratio in good_aspect_ratios:
if d_long/d_lat > threshold:
if ratio > 1.0:
map_width = int(ratio * map_size)
map_height = map_size
else:
map_width = map_size
map_height = int(map_size / ratio)
break
# Create a map.
m = mapnik.Map(map_width, map_height, output_projection)
# Center to the projected coordinates.
bounds = (mapnik.Projection(output_projection).forward( mapnik.Projection(census_shapefile_projection).inverse(mapnik.Coord(long_min, lat_min)) ),
mapnik.Projection(output_projection).forward( mapnik.Projection(census_shapefile_projection).inverse(mapnik.Coord(long_max, lat_max)) ))
m.zoom_to_box(mapnik.Envelope(bounds[0].x, bounds[0].y, bounds[1].x, bounds[1].y))
if not contextmap :
# Add a layer for counties and ZCTAs.
# TODO: These should really be generated with the map tile layer
# so that the labels don't hit each other.
for layer, featurename, labelfontsize, labelcolor, border in (
("county", "NAME", map_size/40, mapnik.Color('rgb(70%,20%,20%)'), True),
("zcta510", "ZCTA5CE10", map_size/60, mapnik.Color('rgb(40%,40%,80%)'), False),
):
s = mapnik.Style()
r = mapnik.Rule()
if border:
p = mapnik.LineSymbolizer(labelcolor, map_size/300)
p.stroke.opacity = .3
p.stroke.add_dash(.1, .1)
r.symbols.append(p)
r.symbols.append(mapnik.TextSymbolizer(mapnik.Expression('[%s]' % featurename), mapnik_label_font, labelfontsize, labelcolor))
s.rules.append(r)
m.append_style('%s Style' % layer, s)
lyr = mapnik.Layer('world', census_shapefile_projection)
lyr.datasource = mapnik.Shapefile(file=sys.argv[1] + "/tl_2013_us_%s.shp" % layer)
lyr.styles.append('%s Style' % layer)
m.layers.append(lyr)
# Draw shading and numbering for the other districts.
district_outline_color = mapnik.Color('rgb(100%,75%,25%)')
s = mapnik.Style()
r = mapnik.Rule()
p = mapnik.PolygonSymbolizer(mapnik.Color('rgb(70%,70%,70%)'))
p.fill_opacity = .55
r.symbols.append(p)
r.filter = mapnik.Filter("([CD113FP] <> '" + district + "' || [STATEFP] <> '" + statefp + "') && [CD113FP] != 'ZZ'")
t = mapnik.TextSymbolizer(mapnik.Expression('[CD113FP]'), mapnik_label_font, map_size/15, district_outline_color)
t.halo_radius = map_size/120
r.symbols.append(t)
s.rules.append(r)
# Draw the outlines of districts. Use a hard thin outline to be exact plus
# a faded wider outline for strength.
r = mapnik.Rule()
p = mapnik.LineSymbolizer(district_outline_color, 2)
r.symbols.append(p)
p = mapnik.LineSymbolizer(district_outline_color, map_size/140)
p.stroke.opacity = .35
r.symbols.append(p)
s.rules.append(r)
m.append_style('Other Districts Style',s)
lyr = mapnik.Layer('world', census_shapefile_projection)
lyr.datasource = mapnik.Shapefile(file=sys.argv[1] + "/tl_2013_us_cd113.shp")
lyr.styles.append('Other Districts Style')
m.layers.append(lyr)
im = mapnik.Image(map_width, map_height)
mapnik.render(m, im)
env = m.envelope()
env = ( mapnik.Projection(output_projection).inverse(mapnik.Coord(env[0], env[1])), mapnik.Projection(output_projection).inverse(mapnik.Coord(env[2], env[3])) )
return im, env
def xml_map_config(request, zoom, x, y, basqui_map, layersMapOptions):
basqui_map.changed = False
basqui_map.save()
map = mapnik.Map(
TILE_WIDTH, TILE_HEIGHT,
"+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +no_defs +over"
)
for layer in layersMapOptions.all():
try:
layerLabel = LayerLabel.objects.get(layerMapOptions=layer)
except ObjectDoesNotExist:
layerLabel = None
for layerStyle in layer.styles.all():
shapefile = layer.layer
geometryField = utils.calcGeometryField(shapefile.geom_type)
if layerLabel:
query = '(select ' + geometryField + ', attribute_value->\'' + layerLabel.field.name + '\' as label, id_relat from "shapefile_feature" where' + ' shapefile_id in (' + str(
shapefile.id) + ')) as geom'
else:
query = '(select ' + geometryField + ', id_relat from "shapefile_feature" where' + ' shapefile_id in (' + str(
shapefile.id) + ')) as geom'
datasource = mapnik.PostGIS(user=dbSettings['USER'],
password=dbSettings['PASSWORD'],
dbname=dbSettings['NAME'],
port=5433,
table=query,
srid=3857,
geometry_field=geometryField,
geometry_table='"shapefile_feature"')
featureLayer = mapnik.Layer(
str(shapefile.filename) + str(layerStyle.id))
featureLayer.srs = "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +no_defs +over"
featureLayer.datasource = datasource
featureLayer.styles.append(
str(shapefile.filename) + '_Style' + str(layerStyle.id))
#defining the feature layer styles
style_rule = mapnik.Rule()
if shapefile.geom_type in ["Point", "MultiPoint"]:
s = mapnik.PointSymbolizer(
mapnik.PathExpression(str(layerStyle.iconName)))
s.allow_overlap = True
style_rule.symbols.append(s)
elif shapefile.geom_type in ["LineString", "MultiLineString"]:
style_rule.symbols.append(
mapnik.LineSymbolizer(
mapnik.Color(str(layerStyle.strokeColor)),
layerStyle.strokeWeight))
elif shapefile.geom_type in ["Polygon", "MultiPolygon"]:
p = mapnik.PolygonSymbolizer(
mapnik.Color(str((layerStyle.fillColor))))
p.fill_opacity = layerStyle.fillOpacity
style_rule.symbols.append(p)
style_rule.symbols.append(
mapnik.LineSymbolizer(
mapnik.Color(str(layerStyle.strokeColor)),
layerStyle.strokeWeight))
layer_style = mapnik.Style()
layer_style.rules.append(style_rule)
#defining label styles
if layerLabel:
label_rule = mapnik.Rule()
label = mapnik.TextSymbolizer(
mapnik.Expression('[label]'), 'DejaVu Sans Book',
layerLabel.font_size,
mapnik.Color(str(layerLabel.font_color)))
label.halo_fill = mapnik.Color(str(layerLabel.halo_color))
label.halo_radius = int(layerLabel.halo_radius)
#label.label_placement = mapnik.label_placement.INTERIOR_PLACEMENT
label.allow_overlap = False
label.avoid_edges = True
label_rule.symbols.append(label)
label_style = mapnik.Style()
label_style.rules.append(label_rule)
featureLayer.styles.append(
str(shapefile.filename) + '_label' + str(layerStyle.id))
#add label to the map
map.append_style(
str(shapefile.filename) + '_label' + str(layerStyle.id),
label_style)
#add new feature to the map
map.append_style(
str(shapefile.filename) + '_Style' + str(layerStyle.id),
layer_style)
map.layers.append(featureLayer)
#saving the map mapnik xml
mapnik.save_map(
map, "c:\\basqui\\tilestache\\%s\\%s.xml" %
(str(request.user), str(basqui_map.map_name)))
def __add_sewers(self, layers, styles):
"Add sewer layer and styles."
# Get all sewer pipes that constitute to this sewerage.
sewers = Sewer.objects.filter(sewerage__pk=self.id)
# Define a style.
style = mapnik.Style()
# QUALITY_UNKNOWN
rule = mapnik.Rule()
rule.filter = mapnik.Filter(
"[quality] = {}".format(Sewer.QUALITY_UNKNOWN)
)
rule.max_scale = 1700
symbol = mapnik.TextSymbolizer(
'code', 'DejaVu Sans Book', 10, mapnik.Color('blue')
)
symbol.allow_overlap = True
# symbol.label_placement = mapnik.label_placement.LINE_PLACEMENT
rule.symbols.append(symbol)
style.rules.append(rule)
# QUALITY_RELIABLE
rule = mapnik.Rule()
rule.filter = mapnik.Filter(
"[quality] = {}".format(Sewer.QUALITY_RELIABLE)
)
rule.max_scale = 1700
symbol = mapnik.TextSymbolizer(
'code', 'DejaVu Sans Book', 10, mapnik.Color('green')
)
symbol.allow_overlap = True
# symbol.label_placement = mapnik.label_placement.LINE_PLACEMENT
symbol.allow_overlap = True
symbol.opacity = 1.0
rule.symbols.append(symbol)
style.rules.append(rule)
# QUALITY_UNRELIABLE
rule = mapnik.Rule()
rule.filter = mapnik.Filter(
"[quality] = {}".format(Sewer.QUALITY_UNRELIABLE)
)
rule.max_scale = 1700
symbol = mapnik.TextSymbolizer(
'code', 'DejaVu Sans Book', 10, mapnik.Color('red')
)
symbol.allow_overlap = True
# symbol.label_placement = mapnik.label_placement.LINE_PLACEMENT
# symbol.displacement(16, 16) # slightly above
rule.symbols.append(symbol)
style.rules.append(rule)
# Setup datasource.
params = default_database_params()
params['table'] = "({}) data".format(sewers.query)
datasource = mapnik.PostGIS(**params)
# Define layer.
layer = mapnik.Layer('sewerLayer')
layer.datasource = datasource
layer.maxzoom = 35000
layer.styles.append('sewerStyle')
layers.append(layer)
styles['sewerStyle'] = style
# center of the image
label_x = xmin + ((xmax - xmin) / 2)
# bottom of the image
label_y = ymin + ((ymax - ymin) / 30)
# create PointDatasource
pds = mapnik.PointDatasource()
# place scale at the bottom-center of the map
pds.add_point(label_x, label_y, 'Name', "Scale: 1:" + str(m.scale_denominator()))
# create label symbolizers
if mapnik.mapnik_version() >= 800:
text = mapnik.TextSymbolizer(mapnik.Expression('[Name]'),'DejaVu Sans Bold',12,mapnik.Color('black'))
else:
text = mapnik.TextSymbolizer('Name','DejaVu Sans Bold',12,mapnik.Color('black'))
s3 = mapnik.Style()
r3 = mapnik.Rule()
r3.symbols.append(text)
s3.rules.append(r3)
lyr3 = mapnik.Layer('Memory Datasource')
lyr3.datasource = pds
lyr3.styles.append('Style')
m.layers.append(lyr3)
m.append_style('Style',s3)
###
criteria = mapnik.Filter("[POP2005] > 100000000")
# get features that pass criteria
queryset = [f for f in featureset if criteria.passes(f)]
for feature in queryset:
m.zoom_to_box(feature.envelope())
m.zoom(1.05)
name = str(feature.attributes['NAME'])
print 'Matched %s...' % name
feature_filter = mapnik.Filter("[NAME] = '%s'" % name)
# selected/highlighted style
s, r = mapnik.Style(), mapnik.Rule()
r.symbols.append(mapnik.LineSymbolizer(mapnik.Color('darkorange'), 3))
r.symbols.append(mapnik.LineSymbolizer(mapnik.Color('yellow'), 2))
t = mapnik.TextSymbolizer('NAME', 'DejaVu Sans Book', 30,
mapnik.Color('rgba(0,0,0,.8)'))
t.avoid_edges = True
t.halo_fill = mapnik.Color('rgba(255,255,255,.2)')
t.halo_radius = 2
r.symbols.append(t)
r.filter = feature_filter
s.rules.append(r)
m.remove_style('selected')
m.append_style('selected', s)
im = mapnik.Image(m.width, m.height)
mapnik.render(m, im)
file = name + '.png'
print 'Rendering %s...' % file
im.save(file)
os.system('open *.png')
# Populated Places
popplaces_lyr = mapnik.Layer('Populated Places')
popplaces_lyr.srs = "+proj=lcc +ellps=GRS80 +lat_0=49 +lon_0=-95 +lat+1=49 +lat_2=77 +datum=NAD83 +units=m +no_defs"
popplaces_lyr.datasource = mapnik.Shapefile(file='../data/popplaces',
encoding='latin1')
popplaces_style = mapnik.Style()
popplaces_rule = mapnik.Rule()
# And here we have a TextSymbolizer, used for labeling.
# The first parameter is the name of the attribute to use as the source of the
# text to label with. Then there is font size in points (I think?), and colour.
popplaces_text_symbolizer = mapnik.TextSymbolizer(
mapnik.Expression("[GEONAME]"), 'DejaVu Sans Book', 10,
mapnik.Color('black'))
# We set a "halo" around the text, which looks like an outline if thin enough,
# or an outright background if large enough.
popplaces_text_symbolizer.label_placement = mapnik.label_placement.POINT_PLACEMENT
popplaces_text_symbolizer.halo_fill = mapnik.Color(255, 255, 200)
popplaces_text_symbolizer.halo_radius = 1
popplaces_text_symbolizer.avoid_edges = True
#popplaces_text_symbolizer.minimum_padding = 30
popplaces_rule.symbols.append(popplaces_text_symbolizer)
popplaces_style.rules.append(popplaces_rule)
m.append_style('popplaces', popplaces_style)
def tileMap(request, version, ezmap_id, zoom, x, y):
try:
if version != "1.0":
raise Http404
try:
ezmap = EzMap.objects.get(id=ezmap_id)
layersMapOptions = LayerMapOptions.objects.filter(
ezmap=ezmap, visible=True).order_by('-position')
except Shapefile.DoesNotExist or Feature.DoesNotExist:
raise Http404
zoom = int(zoom)
x = int(x)
y = int(y)
if zoom < 0 or zoom > MAX_ZOOM_LEVEL:
raise Http404
xExtent = _unitsPerPixel(zoom)
yExtent = _unitsPerPixel(zoom)
minLong = x * xExtent - 20037508.34
minLat = y * yExtent - 20037508.34
maxLong = minLong + xExtent
maxLat = minLat + yExtent
if (minLong < -20037508.34 or maxLong > 20037508.34
or minLat < -20037508.34 or maxLat > 20037508.34):
raise Http404
if ezmap.changed:
#create de mapnik.map object
ezmap.changed = False
ezmap.save()
map = mapnik.Map(
TILE_WIDTH, TILE_HEIGHT,
"+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +no_defs +over"
)
#map.background = mapnik.Color("#ffffff")
#defining the feature layer
for layer in layersMapOptions.all():
label = LayerLabel.objects.get(layerMapOptions=layer)
for layerStyle in layer.styles.all():
shapefile = layer.layer
geometryField = utils.calcGeometryField(
shapefile.geom_type)
query = '(select ' + geometryField + ', attribute_value->\'' + label.field.name + '\' as label, id_relat from "shapefile_feature" where' + ' shapefile_id in (' + str(
shapefile.id) + ')) as geom'
## datasource = mapnik.SQLite(file='C:\mygeosite\sqlite3\sql3.db',
## table=query,
## srid=3857,
## geometry_field=geometryField,
## use_spatial_index=False)
datasource = mapnik.PostGIS(
user=dbSettings['USER'],
password=dbSettings['PASSWORD'],
dbname=dbSettings['NAME'],
table=query,
srid=3857,
geometry_field=geometryField,
geometry_table='"shapefile_feature"')
featureLayer = mapnik.Layer(
str(shapefile.filename) + str(layerStyle.id))
featureLayer.srs = "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +no_defs +over"
featureLayer.datasource = datasource
featureLayer.styles.append(
str(shapefile.filename) + '_Style' +
str(layerStyle.id))
#defining the feature layer styles
rule = mapnik.Rule()
if shapefile.geom_type in ["Point", "MultiPoint"]:
s = mapnik.PointSymbolizer(
mapnik.PathExpression(str(layerStyle.iconName)))
s.allow_overlap = True
rule.symbols.append(s)
elif shapefile.geom_type in [
"LineString", "MultiLineString"
]:
rule.symbols.append(
mapnik.LineSymbolizer(
mapnik.Color(str(layerStyle.strokeColor)),
layerStyle.strokeWeight))
elif shapefile.geom_type in ["Polygon", "MultiPolygon"]:
p = mapnik.PolygonSymbolizer(
mapnik.Color(str((layerStyle.fillColor))))
p.fill_opacity = layerStyle.fillOpacity
rule.symbols.append(p)
rule.symbols.append(
mapnik.LineSymbolizer(
mapnik.Color(str(layerStyle.strokeColor)),
layerStyle.strokeWeight))
label = mapnik.TextSymbolizer(
mapnik.Expression('[label]'), 'DejaVu Sans Book',
label.font_size, mapnik.Color(str(label.font_color)))
label.halo_fill = mapnik.Color(str(label.halo_color))
label.halo_radius = int(label.halo_radius)
label.label_placement = mapnik.label_placement.INTERIOR_PLACEMENT
label.allow_overlap = False
label.avoid_edges = True
rule.symbols.append(label)
style = mapnik.Style()
style.rules.append(rule)
#add new feature to the map
map.append_style(
str(shapefile.filename) + '_Style' +
str(layerStyle.id), style)
map.layers.append(featureLayer)
#saving the map mapnik xml
mapnik.save_map(
map, "c:\\mygeosite\\tilestache\\%s\\%s.xml" %
(str(request.user), str(ezmap.map_name)))
config = {
"cache": {
"name": "test",
"path": "../tilestache/%s" % (request.user),
"umask": "0000",
"dirs": "portable"
},
"layers": {
ezmap.map_name: {
"provider": {
"name":
"mapnik",
"mapfile":
"../tilestache/%s/%s.xml" %
(request.user, ezmap.map_name)
},
"projection": "spherical mercator"
}
}
}
# like http://tile.openstreetmap.org/1/0/0.png
#coord = ModestMaps.Core.Coordinate(y, x, zoom)
path = "/%s/%s/%s/%s.png" % (ezmap.map_name, zoom, x, y)
config = TileStache.Config.buildConfiguration(config)
#type, bytes = TileStache.getTile(config.layers[shapefile.filename], coord, 'png')
type, bytes = TileStache.requestHandler(config, path)
return HttpResponse(bytes, mimetype="image/png")
except:
traceback.print_exc()
return HttpResponse("")
def tileFeature(request, version, shapefile_id, feature_id, zoom, x, y):
try:
if version != "1.0":
raise Http404
try:
shapefile = Shapefile.objects.get(id=shapefile_id,
created_by=request.user)
except Shapefile.DoesNotExist:
raise Http404
zoom = int(zoom)
x = int(x)
y = int(y)
if zoom < 0 or zoom > MAX_ZOOM_LEVEL:
raise Http404
xExtent = _unitsPerPixel(zoom)
yExtent = _unitsPerPixel(zoom)
minLong = x * xExtent - 20037508.34
minLat = y * yExtent - 20037508.34
maxLong = minLong + xExtent
maxLat = minLat + yExtent
if (minLong < -20037508.34 or maxLong > 20037508.34
or minLat < -20037508.34 or maxLat > 20037508.34):
raise Http404
#create mapnik.map object
map = mapnik.Map(
TILE_WIDTH, TILE_HEIGHT,
"+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +no_defs +over"
)
map.background = mapnik.Color("#fff")
#defining the feature layer
geometryField = utils.calcGeometryField(shapefile.geom_type)
query = '(select ' + geometryField + ', id, id_relat as label from "layers_feature" WHERE shapefile_id = ' + str(
shapefile.id) + ' AND id = ' + str(feature_id) + ') as geom'
datasource = mapnik.PostGIS(host=dbSettings['HOST'],
user=dbSettings['USER'],
password=dbSettings['PASSWORD'],
dbname=dbSettings['NAME'],
port=dbSettings['PORT'],
table=query,
srid=3857,
geometry_field=geometryField,
simplify_geometries=True,
geometry_table='"layers_feature"')
featureLayer = mapnik.Layer("featureLayer")
featureLayer.srs = "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +no_defs +over"
featureLayer.datasource = datasource
featureLayer.styles.append("featureLayerStyle")
#defining the feature layer styles
rule = mapnik.Rule()
if shapefile.geom_type in [
"Point", "3D Point", "MultiPoint", "3D MultiPoint"
]:
rule.symbols.append(mapnik.PointSymbolizer())
elif shapefile.geom_type in [
"LineString", "3D LineString", "MultiLineString",
"3D MultiLineString"
]:
rule.symbols.append(
mapnik.LineSymbolizer(mapnik.Color("#000000"), 0.5))
elif shapefile.geom_type in [
"Polygon", "3D Polygon", "MultiPolygon", "3D MultiPolygon"
]:
rule.symbols.append(
mapnik.PolygonSymbolizer(mapnik.Color("#f7edee")))
rule.symbols.append(
mapnik.LineSymbolizer(mapnik.Color("#000000"), 0.5))
style = mapnik.Style()
style.rules.append(rule)
map.append_style("featureLayerStyle", style)
label_rule = mapnik.Rule()
label = mapnik.TextSymbolizer(mapnik.Expression('[label]'),
'DejaVu Sans Book', 10,
mapnik.Color('black'))
label.halo_radius = 4
label.allow_overlap = False
label.avoid_edges = True
label_rule.symbols.append(label)
label_style = mapnik.Style()
label_style.rules.append(label_rule)
featureLayer.styles.append("featureLayerStyle_label")
#add label to the map
map.append_style("featureLayerStyle_label", label_style)
#add new feature to the map
map.layers.append(featureLayer)
#rendering the map tile
mapnik_xml_path = "../tilestache/%s/layers/vector/lightViewer/%s.xml" % (
str(request.user), str(shapefile.name))
mapnik.save_map(map, mapnik_xml_path)
config = {
"cache": {
"name": "Test",
"path": "../tilestache/%s" % (request.user),
"umask": "0000",
"dirs": "portable"
},
"layers": {
shapefile.name: {
"provider": {
"name": "mapnik",
"mapfile": mapnik_xml_path
},
"metatile": {
"rows": 2,
"columns": 2,
"buffer": 64
},
"projection": "spherical mercator",
"write cache": False
}
}
}
path = "/%s/%s/%s/%s.png" % (shapefile.name, zoom, x, y)
config = TileStache.Config.buildConfiguration(config)
type, bytes = TileStache.requestHandler(config, path)
return HttpResponse(bytes, content_type="image/png")
except:
traceback.print_exc()
return HttpResponse("")
studySiteDS = mapnik.Shapefile(file='StudySiteRegion.shp')
studySiteLyr = mapnik.Layer('Study Site', '+init=epsg:4326')
studySiteLyr.datasource = studySiteDS
peruDS = mapnik.Shapefile(file='GRC_adm1.shp')
peruLyr = mapnik.Layer('Peru', '+init=epsg:4326')
peruLyr.datasource = peruDS
cityNames = mapnik.Shapefile(file='places.shp')
citiesLyr = mapnik.Layer('Cities', '+init=epsg:4326')
citiesLyr.datasource = cityNames
#point_symbolizer_cities = mapnik.PointSymbolizer()#mapnik.Color('#000000'))
#citiesRules.symbols.append(point_symbolizer_cities)
t = mapnik.TextSymbolizer(mapnik.Expression('[name]'), 'DejaVu Sans Book', 12,
mapnik.Color('#000000'))
#t.halo_fill = mapnik.Color('#FFFFFF')
t.fill = mapnik.Color('#000000')
t.avoid_edges = True
#t.halo_radius = 0.5
t.label_placement = mapnik.label_placement.POINT_PLACEMENT #is default
#dir(t)
citiesRules.symbols.append(t)
citiesStyles.rules.append(citiesRules)
# to fill a polygon we create a PolygonSymbolizer
polygon_symbolizer_peru = mapnik.PolygonSymbolizer(mapnik.Color('#F0FFF0'))
pRules.symbols.append(
polygon_symbolizer_peru) # add the symbolizer to the rule object
# to add outlines to a polygon we create a LineSymbolizer
# s = mapnik.Style()
# r = mapnik.Rule()
# line_symbolizer = mapnik.LineSymbolizer(mapnik.Color('red'),1)
# r.symbols.append(line_symbolizer)
# s.rules.append(r)
# point_sym = mapnik.PointSymbolizer()
# point_sym.allow_overlap = True
# point_sym = mapnik.MarkersSymbolizer()
# r.symbols.append(point_sym)
# s.rules.append(r)
basinsLabels = mapnik.TextSymbolizer(mapnik.Expression('[qgis]'),
'DejaVu Sans Bold', 3,
mapnik.Color('yellow'))
basinsLabels.halo_fill = mapnik.Color('Purple')
basinsLabels.halo_radius = 1
r.symbols.append(basinsLabels)
# point_sym = mapnik.PointSymbolizer()
# point_sym.allow_overlap = True
# point_sym = mapnik.MarkersSymbolizer()
# r.symbols.append(point_sym)
# s.rules.append(r)
s.rules.append(r)
m.append_style('Mellyn2', s)
ds = mapnik.Shapefile(file="titik.shp")
layer = mapnik.Layer('indonesia2')
r.symbols.append(polygon_symbolizer)
s.rules.append(r)
m.append_style('Sancaka1', s)
ds = mapnik.Shapefile(file="propinsi/INDONESIA_PROP.shp")
layer = mapnik.Layer('indonesia')
layer.datasource = ds
layer.styles.append('Sancaka1')
m.layers.append(layer)
#test
s = mapnik.Style()
r = mapnik.Rule()
basinsLabels = mapnik.TextSymbolizer(mapnik.Expression('[nama]'),
'DejaVu Sans Bold', 3,
mapnik.Color('red'))
basinsLabels.halo_fill = mapnik.Color('yellow')
basinsLabels.halo_radius = 1
r.symbols.append(basinsLabels)
point_sym = mapnik.PointSymbolizer()
point_sym.allow_overlap = True
point_sym.opacity = 0.5
point_sym.file = ()
r.symbols.append(point_sym)
point = mapnik.PointSymbolizer()
r.symbols.append(point)
s.rules.append(r)
def school_sheds_results(request=None,
school_id=None,
bbox=None,
width=816,
height=1056,
srid=3857,
format='png'):
'''
Default height and width are 'Letter' ratio
'''
format = format.encode('ascii')
school = School.objects.get(pk=school_id)
point = school.geometry
circle = point.buffer(3400.0)
m = mapnik.Map(int(width), int(height), "+init=epsg:" + str(srid))
mapnik.load_map(m, os.path.dirname(__file__) + "/basemap/basemap.xml")
if bbox is None:
circle.transform(srid)
bbox = mapnik.Box2d(*circle.extent)
m.zoom_to_box(bbox)
#m.background = mapnik.Color('steelblue')
# styles for sheds
s = mapnik.Style()
for name, color in (('0.5', VIOLET), ('1.0', PURPLE), ('1.5', LAVENDER),
('2.0', LIGHTCYAN)):
r = mapnik.Rule()
r.filter = mapnik.Expression("[name] = " + name)
c = mapnik.Color(color)
c.a = 80
line_symbolizer = mapnik.LineSymbolizer(mapnik.Color("gray"), 1)
poly_symbolizer = mapnik.PolygonSymbolizer(c)
r.symbols.append(line_symbolizer)
r.symbols.append(poly_symbolizer)
s.rules.append(r)
# styles for schools
school_colors = SCHOOL_COLORS
for name, color in school_colors:
r = mapnik.Rule()
r.filter = mapnik.Expression("[name] = '" + name + "'")
line_symbolizer = mapnik.LineSymbolizer()
poly_symbolizer = mapnik.PolygonSymbolizer(mapnik.Color(color))
r.symbols.append(line_symbolizer)
r.symbols.append(poly_symbolizer)
s.rules.append(r)
r = mapnik.Rule()
r.filter = mapnik.Expression(
"[name] != 'map_title' and [name] != 'map_subtitle' and [name] != 'legend_title' and [name] != 'school'"
)
text_symbolizer = mapnik.TextSymbolizer(mapnik.Expression('[label]'),
'DejaVu Sans Book', 9,
mapnik.Color('black'))
text_symbolizer.halo_fill = mapnik.Color('white')
text_symbolizer.halo_radius = 1
text_symbolizer.horizontal_alignment = mapnik.horizontal_alignment.RIGHT
#text_symbolizer.label_placement = mapnik.label_placement.VERTEX_PLACEMENT
text_symbolizer.allow_overlap = True
text_symbolizer.displacement = (12, 0)
r.symbols.append(text_symbolizer)
s.rules.append(r)
r = mapnik.Rule()
r.filter = mapnik.Expression("[name] = 'map_title'")
text_symbolizer = mapnik.TextSymbolizer(mapnik.Expression('[label]'),
'DejaVu Sans Book', 15,
mapnik.Color('black'))
text_symbolizer.horizontal_alignment = mapnik.horizontal_alignment.RIGHT
text_symbolizer.halo_fill = mapnik.Color('white')
text_symbolizer.allow_overlap = True
r.symbols.append(text_symbolizer)
s.rules.append(r)
r = mapnik.Rule()
r.filter = mapnik.Expression("[name] = 'map_subtitle'")
text_symbolizer = mapnik.TextSymbolizer(mapnik.Expression('[label]'),
'DejaVu Sans Book', 12,
mapnik.Color('black'))
text_symbolizer.horizontal_alignment = mapnik.horizontal_alignment.RIGHT
text_symbolizer.halo_fill = mapnik.Color('white')
text_symbolizer.allow_overlap = True
r.symbols.append(text_symbolizer)
s.rules.append(r)
r = mapnik.Rule()
r.filter = mapnik.Expression("[name] = 'legend_title'")
text_symbolizer = mapnik.TextSymbolizer(mapnik.Expression('[label]'),
'DejaVu Sans Condensed Bold', 11,
mapnik.Color('black'))
text_symbolizer.horizontal_alignment = mapnik.horizontal_alignment.RIGHT
text_symbolizer.halo_fill = mapnik.Color('white')
text_symbolizer.halo_radius = 1
text_symbolizer.allow_overlap = True
r.symbols.append(text_symbolizer)
s.rules.append(r)
r = mapnik.Rule()
r.filter = mapnik.Expression("[name] = 'legend_box'")
poly_symbolizer = mapnik.PolygonSymbolizer(mapnik.Color("white"))
line_symbolizer = mapnik.LineSymbolizer(mapnik.Color("black"), 0.5)
poly_symbolizer.fill_opacity = 0.8
r.symbols.append(line_symbolizer)
r.symbols.append(poly_symbolizer)
s.rules.append(r)
r = mapnik.Rule()
r.filter = mapnik.Expression("[name] = 'school'")
ps = mapnik.PointSymbolizer(
mapnik.PathExpression(
os.path.dirname(__file__) + '/static/img/School.svg'))
ps.transform = 'scale(0.06)'
ps.allow_overlap = True
#shield.label_placement = mapnik.label_placement.POINT_PLACEMENT
r.symbols.append(ps)
s.rules.append(r)
m.append_style("surveys", s)
def p2l(pct_x, pct_y):
loc_x = bbox.minx + (bbox.maxx - bbox.minx) * pct_x / 100.0
loc_y = bbox.miny + (bbox.maxy - bbox.miny) * pct_y / 100.0
return (loc_x, loc_y)
sheds = {
0.5: school.shed_05,
1.0: school.shed_10,
1.5: school.shed_15,
2.0: school.shed_20
}
csv_string = 'wkt,name,label\n'
for key, g in reversed(sorted(sheds.items(), key=lambda a: a[0])):
if g is None:
continue
g.srid = 26986
g.transform(srid)
csv_string += '"%s","%s",""\n' % (g.wkt, str(key))
surveys = Survey.objects.filter(school=school)
for survey in surveys:
survey.location.transform(srid)
children = list(survey.child_set.all())
if len(children) > 0:
for c in children:
name = str(c.to_school)
point = survey.location
point.x += random.randint(-50, 50)
point.y += random.randint(-50, 50)
school_circle = point.buffer(50)
csv_string += '"%s","%s",""\n' % (school_circle.wkt, name)
else:
name = "o"
point = survey.location
point.x += random.randint(-50, 50)
point.y += random.randint(-50, 50)
school_circle = point.buffer(50)
csv_string += '"%s","%s",""\n' % (school_circle.wkt, name)
#Add School geometry
school.geometry.transform(srid)
csv_string += '"%s","school","%s"\n' % (school.geometry.wkt, school.name)
def box(minx, miny, maxx, maxy):
lmin = Point(p2l(minx, miny))
lmax = Point(p2l(maxx, maxy))
lr = LinearRing((lmin.x, lmin.y), (lmax.x, lmin.y), (lmax.x, lmax.y),
(lmin.x, lmax.y), (lmin.x, lmin.y))
poly = Polygon(lr)
return poly
legend = box(2, 108, 50, 113.5)
csv_string += '"%s","%s","%s"\n' % (legend.wkt, "legend_box", "")
xy = p2l(3.5, 112)
point = Point(*xy)
csv_string += '"%s","%s","School Commute Survey Results"\n' % (point.wkt,
"map_title")
xy = p2l(3.5, 109.5)
point = Point(*xy)
csv_string += '"%s","%s","%s, %s"\n' % (point.wkt, "map_subtitle", school,
school.districtid)
legend_x = 53
legend = box(legend_x, 97, 97.5, 113.5)
csv_string += '"%s","%s","%s"\n' % (legend.wkt, "legend_box", "")
xy = p2l(legend_x + 1.5, 112)
point = Point(*xy)
csv_string += '"%s","legend_title","Approx. home locations and travel to school mode"\n' % (
point.wkt, )
walksheds_x = 88
xy = p2l(walksheds_x, 112)
point = Point(*xy)
csv_string += '"%s","legend_title","Walksheds"\n' % (point.wkt, )
y = 111.5
for name, label in school_colors:
y -= 1.8
xy = p2l(legend_x + 2, y)
point = Point(*xy)
circle = point.buffer(50)
csv_string += '"%s","%s","%s"\n' % (circle.wkt, name, MODE_DICT[name])
y = 110
for name in (
'0.5',
'1.0',
'1.5',
'2.0',
):
y -= 2.4
ws = box(walksheds_x, y, walksheds_x + 2, y + 1.5)
csv_string += '"%s","%s","%s Mile"\n' % (ws.wkt, name, name)
layer = mapnik.Layer('surveys', "+init=epsg:" + str(srid))
ds = mapnik.Datasource(type="csv", inline=csv_string.encode('ascii'))
layer.datasource = ds
layer.styles.append('surveys')
m.layers.append(layer)
# Render to image
if format == 'pdf':
tmp_file = tempfile.NamedTemporaryFile()
surface = cairo.PDFSurface(tmp_file.name, m.width, m.height)
mapnik.render(m, surface)
surface.finish()
tmp_file.seek(0)
im = tmp_file.read()
else:
im = mapnik.Image(m.width, m.height)
mapnik.render(m, im)
im = im.tostring(format)
response = HttpResponse()
response['Content-length'] = str(len(im))
response['Content-Type'] = mimetypes.types_map['.' + format]
response.write(im)
return response
def getMapImage(osmFile, map_output):
'''Uses the data from the osmFile to out a .png image
of the area depicted by the input file'''
if not HAS_MAPNIK:
print('Error: Mapnik module is missing. ' +
'Please install for getting the image functionality.')
return -2
print('Has Mapnik.')
if osmFile == '':
print 'Error: getMapImage::No File Recieved'
return -1
else:
print('OSM File: ' + osmFile)
highwayList = dict({
"motorway": {
'width': 4,
'color': 'green',
'fontSize': 12
},
"trunk": {
'width': 3,
'color': 'green',
'fontSize': 11
},
"primary": {
'width': 1.5,
'color': '#0090ff',
'fontSize': 10
},
"secondary": {
'width': 0.8,
'color': '#ff00ff',
'fontSize': 8
},
"tertiary": {
'width': 0.42,
'color': '#000000',
'fontSize': 8
},
"residential": {
'width': 0.21,
'color': 'black',
'fontSize': 8
},
"living_street": {
'width': 0.21,
'color': 'black',
'fontSize': 8
},
"pedestrian": {
'width': 0.21,
'color': 'brown',
'fontSize': 8
},
"footway": {
'width': 0.21,
'color': 'brown',
'fontSize': 8
}
})
m = mapnik.Map(1024, 1024)
m.background = mapnik.Color('white')
for highwayType in highwayList.keys():
styleType = mapnik.Style()
print(styleType)
rule = mapnik.Rule()
rule.filter = mapnik.Expression('[highway]=' + "'" + highwayType + "'")
stk = mapnik.Stroke()
stk.color = mapnik.Color(highwayList[highwayType]['color'])
stk.line_cap = mapnik.line_cap.ROUND_CAP
stk.width = highwayList[highwayType]['width']
line_symbolizer = mapnik.LineSymbolizer(stk)
rule.symbols.append(line_symbolizer)
rule2 = mapnik.Rule()
rule2.filter = mapnik.Expression('[highway]=' + "'" + highwayType +
"'")
text_symbolizer = mapnik.TextSymbolizer(
mapnik.Expression("[name]"), "DejaVu Sans Book",
highwayList[highwayType]['fontSize'], mapnik.Color('black'))
text_symbolizer.halo_fill = mapnik.Color('white')
rule2.symbols.append(text_symbolizer)
styleType.rules.append(rule)
styleType.rules.append(rule2)
m.append_style(highwayType, styleType)
ds = mapnik.Osm(file=osmFile)
layer = mapnik.Layer('world')
layer.datasource = ds
for highwayType in highwayList.keys():
layer.styles.append(highwayType)
m.layers.append(layer)
m.zoom_all()
mapnik.render_to_file(m, map_output, 'png')
return os.system('xdg-open ' + map_output)