def layer(self, layer_ids=None, request=None):
"""Return a layer with all stickies or stickies with selected
tags
"""
start_end = current_start_end_dates(request)
layers = []
styles = {}
layer = mapnik.Layer("Stickies", WGS84)
layer.datasource = mapnik.MemoryDatasource()
stickies = self.stickies.exclude(time__gte=start_end[1]
).filter(time__gte=start_end[0])
for _id, sticky in enumerate(stickies):
add_datasource_point(layer.datasource,
sticky.geom.x,
sticky.geom.y,
'Name',
'hssd',
_id)
# generate "unique" point style name and append to layer
style_name = "StickyTweets"
styles[style_name] = self.style()
layer.styles.append(style_name)
layers = [layer, ]
return layers, styles
def layer(self, layer_ids=None, webcolor=None, request=None):
"""Return layer and styles that render points.
"""
layers = []
styles = {}
layer = mapnik.Layer("FEWS JDBC points layer", coordinates.WGS84)
layer.datasource = mapnik.PointDatasource()
try:
named_locations = self._locations()
except FewsJdbcQueryError:
logger.exception('Problem querying locations from jdbc2ei.')
return [], {}
fews_styles, fews_style_lookup = IconStyle._styles_lookup()
logger.debug("Number of point objects: %d" % len(named_locations))
for named_location in named_locations:
#logger.debug('layer coordinates %s %s %s' % (
# named_location['locationid'],
# named_location['longitude'],
# named_location['latitude']))
point_style_name, point_style = fews_point_style(
self.jdbc_source,
self.filterkey,
named_location['locationid'],
self.parameterkey,
nodata=False,
styles=fews_styles,
lookup=fews_style_lookup)
# Put style in point, filters work on these styles.
add_datasource_point(
layer.datasource, named_location['longitude'],
named_location['latitude'], 'style', str(point_style_name))
# generate "unique" point style name and append to layer
# if the same style occurs multiple times, it will overwrite old.
style_name = str("Lizard-FewsJdbc::%s" % (point_style_name))
styles[style_name] = point_style
# Add all style names to the layer styles.
for style_name in styles.keys():
layer.styles.append(style_name)
layers = [layer, ]
return layers, styles
def layer(self, layer_ids=None, webcolor=None, request=None):
logger.debug("In lizard_fancylayers.layer")
# We only do point layers right now
if not self.datasource.has_property(properties.LAYER_POINTS):
logger.debug("Datasource is not a point layer.")
return [], {}
layers = []
styles = {}
locations = list(self.datasource.locations())
colors = {"default": html_to_mapnik('0000ff')}
logger.debug("1")
for location in locations:
if location.color is not None:
colors[location.color] = html_to_mapnik(location.color)
style = mapnik.Style()
logger.debug("2")
for colorname, color in colors.iteritems():
rule = mapnik.Rule()
symbol = mapnik.PointSymbolizer(
symbol_filename(color), 'png', 16, 16)
symbol.allow_overlap = True
rule.symbols.append(symbol)
rule.filter = mapnik.Filter("[Color] = '{0}'".format(colorname))
style.rules.append(rule)
styles['trivialStyle'] = style
logger.debug("3")
layer = mapnik.Layer("Fancy Layers layer", coordinates.WGS84)
layer.datasource = mapnik.PointDatasource()
layer.styles.append('trivialStyle')
logger.debug("4 - {0}".format(locations))
for location in locations:
color = location.color or 'default'
logger.debug('{0}: {1}'.format(location, color))
add_datasource_point(
layer.datasource, location.longitude,
location.latitude,
'Color', str(color))
logger.debug("5")
layers.append(layer)
return layers, styles
def layer(self, layer_ids=None, request=None):
"Return Mapnik layers and styles."
layers, styles = [], {}
styles["pointsStyle"] = self.style()
layer = mapnik.Layer("Geodin points layer", coordinates.WGS84)
layer.datasource = mapnik.PointDatasource()
layer.styles.append("pointsStyle")
for point in self.measurement.points.all():
add_datasource_point(
layer.datasource,
point.location.x,
point.location.y,
'style',
'pointsStyle')
layers.append(layer)
return layers, styles
def layer(self, layer_ids=None, webcolor=None, request=None):
# We only do point layers right now
if not self.datasource.has_property(properties.LAYER_POINTS):
return [], {}
layers = []
styles = {}
locations = list(self.datasource.locations())
colors = {"default": html_to_mapnik(default_color())}
for location in locations:
if location.color is not None:
colors[location.color] = html_to_mapnik(location.color)
style = mapnik.Style()
for colorname, color in colors.iteritems():
rule = mapnik.Rule()
symbol = mapnik.PointSymbolizer()
symbol.filename = symbol_pathname(color)
symbol.allow_overlap = True
rule.symbols.append(symbol)
rule.filter = mapnik.Filter("[Color] = '{0}'".format(colorname))
style.rules.append(rule)
styles['trivialStyle'] = style
layer = mapnik.Layer("Fancy Layers layer", coordinates.WGS84)
layer.datasource = mapnik.MemoryDatasource()
layer.styles.append('trivialStyle')
for _id, location in enumerate(locations):
color = location.color or 'default'
add_datasource_point(
layer.datasource, location.longitude,
location.latitude,
'Color', str(color), _id)
layers.append(layer)
return layers, styles
def layer(self, layer_ids=None, request=None):
"""Return a layer with all stickies or stickies with selected
tags
"""
start_end = current_start_end_dates(request)
layers = []
styles = {}
layer = mapnik.Layer("Stickies", WGS84)
layer.datasource = mapnik.MemoryDatasource()
stickies = self.stickies.exclude(time__gte=start_end[1]).filter(
time__gte=start_end[0])
for _id, sticky in enumerate(stickies):
add_datasource_point(layer.datasource, sticky.geom.x,
sticky.geom.y, 'Name', 'hssd', _id)
# generate "unique" point style name and append to layer
style_name = "StickyTweets"
styles[style_name] = self.style()
layer.styles.append(style_name)
layers = [
layer,
]
return layers, styles
def layer(self, layer_ids=None, webcolor=None, request=None):
"""Return layer and styles that render points."""
layers = []
styles = {}
styles_nodata = {}
styles_data = {}
layer = mapnik.Layer("FEWS points layer", coordinates.WGS84)
layer_nodata = mapnik.Layer("FEWS points layer (no data)",
coordinates.WGS84)
#filterkey = self.filterkey
#parameterkey = self.parameterkey
#fews_filter = Filter.objects.get(pk=filterkey)
#fews_parameter = Parameter.objects.get(pk=parameterkey)
layer.datasource = mapnik.PointDatasource()
layer_nodata.datasource = mapnik.PointDatasource()
fews_styles, fews_style_lookup = IconStyle._styles_lookup()
for info in self._timeseries():
# Due to mapnik bug, we render the very same point 10cm to the top
# right, bottom left, etc.
add_datasource_point(
layer.datasource, info['longitude'], info['latitude'],
'Name', info['location_name'])
if not info['has_data']:
add_datasource_point(
layer_nodata.datasource,
info['longitude'], info['latitude'],
'Name', info['location_name'])
point_style_name, point_style = fews_point_style(
info['object'].filterkey, info['object'].locationkey,
info['object'].parameterkey, nodata=False, styles=fews_styles,
lookup=fews_style_lookup)
# generate "unique" point style name and append to layer
style_name = "fews-unblobbed::%s" % point_style_name
styles_data[style_name] = point_style
point_style_nodata_name, point_style_nodata = fews_point_style(
info['object'].filterkey, info['object'].locationkey,
info['object'].parameterkey, nodata=True, styles=fews_styles,
lookup=fews_style_lookup)
# generate "unique" point style name and append to layer
style_name_nodata = "fews-unblobbed-nodata::%s" % (
point_style_nodata_name)
styles[style_name_nodata] = point_style_nodata # to return
styles_nodata[style_name_nodata] = point_style_nodata # for layer
for style_name in styles_data.keys():
layer.styles.append(style_name)
for style_name_nodata in styles_nodata.keys():
layer_nodata.styles.append(style_name_nodata)
styles = styles_data
styles.update(styles_nodata)
layers = [layer_nodata, layer] # TODO: the layer WITH data on top
return layers, styles
