def legend_shapedata(request):
"""Draws a ShapeDataLegend
input: GET['object_id']: ShapeDataLegend.id
output: png image of the legend
"""
## FIRST check if this is a new style grid, with dynamic legend
presentationlayer_id = request.GET.get('presentationlayer_id')
# Hack -- object_id really means legend id, but sometimes the
# presentationlayer_id is passed in that way (because I do that
# explictly in NPyramidOverlay.js, but I don't know why
# presentationlayer_id isn't passed in in the first place)
if presentationlayer_id is None:
presentationlayer_id = request.GET.get('object_id')
if presentationlayer_id:
try:
presentationlayer = PresentationLayer.objects.get(
pk=presentationlayer_id)
result = pyramids.get_result_by_presentationlayer(
presentationlayer)
if result:
# Handle these elsewhere, dynamic
template_variables = pyramids.result_legend(
result, presentationlayer, request.GET.get('colormap'),
request.GET.get('maxvalue'))
return render_to_response(
'visualization/legend_shapedata_grid.html',
template_variables)
except PresentationLayer.DoesNotExist:
pass
# No, it's not, continue in the old way
shapedatalegend = get_object_or_404(ShapeDataLegend,
pk=request.GET['object_id'])
geo_type = shapedatalegend.presentationtype.geo_type
if geo_type == PresentationType.GEO_TYPE_POINT:
sm = SymbolManager(settings.SYMBOLS_DIR)
mpl = MapnikPointLegend(shapedatalegend, sm)
title, blocks = mpl.get_legend_data()
return render_to_response('visualization/legend_shapedata_point.html',
{
'title': title,
'blocks': blocks
})
elif geo_type == PresentationType.GEO_TYPE_LINE:
if shapedatalegend.id in [20]:
legend_data = [(100, '005bff'), (500, '00ebff'), (1000, '4dff00'),
(5000, 'fff100'), (20000, 'ff4100')]
return render_to_response(
'visualization/legend_shapedata_grid.html', {
'title': shapedatalegend.name,
'content': legend_data
})
else:
sm = SymbolManager(settings.SYMBOLS_DIR)
mpl = MapnikPointLegend(shapedatalegend, sm)
title, blocks = mpl.get_legend_data()
return render_to_response(
'visualization/legend_shapedata_point.html', {
'title': title,
'blocks': blocks
})
elif geo_type == PresentationType.GEO_TYPE_POLYGON:
sm = SymbolManager(settings.SYMBOLS_DIR)
mpl = MapnikPointLegend(shapedatalegend, sm)
title, blocks = mpl.get_legend_data()
return render_to_response('visualization/legend_shapedata_point.html',
{
'title': title,
'blocks': blocks
})
elif geo_type in (PresentationType.GEO_TYPE_GRID,
PresentationType.GEO_TYPE_PYRAMID):
try:
pl = get_object_or_404(PresentationLayer,
pk=request.GET['presentationlayer_id'])
file_location = (
pl.presentationgrid.png_default_legend.file_location)
file_folder = file_location[:file_location.rfind('\\')]
color_mapping = file_folder + '\colormapping.csv'
f = open(external_file_location(color_mapping), 'rb')
try:
reader = list(csv.DictReader(f))
legend_data = [(float(r['leftbound']), r['colour'])
for r in reader]
finally:
f.close()
except:
legend_data = []
return render_to_response('visualization/legend_shapedata_grid.html', {
'title': shapedatalegend.name,
'content': legend_data
})
def legend_shapedata(request):
"""Draws a ShapeDataLegend
input: GET['object_id']: ShapeDataLegend.id
output: png image of the legend
"""
## FIRST check if this is a new style grid, with dynamic legend
presentationlayer_id = request.GET.get('presentationlayer_id')
# Hack -- object_id really means legend id, but sometimes the
# presentationlayer_id is passed in that way (because I do that
# explictly in NPyramidOverlay.js, but I don't know why
# presentationlayer_id isn't passed in in the first place)
if presentationlayer_id is None:
presentationlayer_id = request.GET.get('object_id')
if presentationlayer_id:
try:
presentationlayer = PresentationLayer.objects.get(
pk=presentationlayer_id)
result = pyramids.get_result_by_presentationlayer(
presentationlayer)
if result:
# Handle these elsewhere, dynamic
template_variables = pyramids.result_legend(
result, presentationlayer,
request.GET.get('colormap'), request.GET.get('maxvalue'))
return render_to_response(
'visualization/legend_shapedata_grid.html',
template_variables)
except PresentationLayer.DoesNotExist:
pass
# No, it's not, continue in the old way
shapedatalegend = get_object_or_404(
ShapeDataLegend, pk=request.GET['object_id'])
geo_type = shapedatalegend.presentationtype.geo_type
if geo_type == PresentationType.GEO_TYPE_POINT:
sm = SymbolManager(settings.SYMBOLS_DIR)
mpl = MapnikPointLegend(shapedatalegend, sm)
title, blocks = mpl.get_legend_data()
return render_to_response('visualization/legend_shapedata_point.html',
{'title': title, 'blocks': blocks})
elif geo_type == PresentationType.GEO_TYPE_LINE:
if shapedatalegend.id in [20]:
legend_data = [(100, '005bff'),
(500, '00ebff'),
(1000, '4dff00'),
(5000, 'fff100'),
(20000, 'ff4100')]
return render_to_response(
'visualization/legend_shapedata_grid.html',
{'title': shapedatalegend.name,
'content': legend_data})
else:
sm = SymbolManager(settings.SYMBOLS_DIR)
mpl = MapnikPointLegend(shapedatalegend, sm)
title, blocks = mpl.get_legend_data()
return render_to_response(
'visualization/legend_shapedata_point.html',
{'title': title, 'blocks': blocks})
elif geo_type == PresentationType.GEO_TYPE_POLYGON:
sm = SymbolManager(settings.SYMBOLS_DIR)
mpl = MapnikPointLegend(shapedatalegend, sm)
title, blocks = mpl.get_legend_data()
return render_to_response('visualization/legend_shapedata_point.html',
{'title': title, 'blocks': blocks})
elif geo_type in (PresentationType.GEO_TYPE_GRID,
PresentationType.GEO_TYPE_PYRAMID):
try:
pl = get_object_or_404(
PresentationLayer, pk=request.GET['presentationlayer_id'])
file_location = (
pl.presentationgrid.png_default_legend.file_location)
file_folder = file_location[:file_location.rfind('\\')]
color_mapping = file_folder + '\colormapping.csv'
f = open(external_file_location(color_mapping), 'rb')
try:
reader = list(csv.DictReader(f))
legend_data = [
(float(r['leftbound']), r['colour']) for r in reader]
finally:
f.close()
except:
legend_data = []
return render_to_response('visualization/legend_shapedata_grid.html',
{'title': shapedatalegend.name,
'content': legend_data})
def legend_shapedata(request):
"""Draws a ShapeDataLegend
input: GET['object_id']: ShapeDataLegend.id
output: png image of the legend
"""
shapedatalegend = get_object_or_404(
ShapeDataLegend, pk=request.GET['object_id'])
geo_type = shapedatalegend.presentationtype.geo_type
if geo_type == PresentationType.GEO_TYPE_POINT:
sm = SymbolManager(settings.SYMBOLS_DIR)
mpl = MapnikPointLegend(shapedatalegend, sm)
title, blocks = mpl.get_legend_data()
return render_to_response('visualization/legend_shapedata_point.html',
{'title': title, 'blocks': blocks})
elif geo_type == PresentationType.GEO_TYPE_LINE:
if shapedatalegend.id in [20]:
legend_data = [(100, '005bff'),
(500, '00ebff'),
(1000, '4dff00'),
(5000, 'fff100'),
(20000, 'ff4100')]
return render_to_response(
'visualization/legend_shapedata_grid.html',
{'title': shapedatalegend.name,
'content': legend_data})
else:
sm = SymbolManager(settings.SYMBOLS_DIR)
mpl = MapnikPointLegend(shapedatalegend, sm)
title, blocks = mpl.get_legend_data()
return render_to_response(
'visualization/legend_shapedata_point.html',
{'title': title, 'blocks': blocks})
elif geo_type == PresentationType.GEO_TYPE_POLYGON:
sm = SymbolManager(settings.SYMBOLS_DIR)
mpl = MapnikPointLegend(shapedatalegend, sm)
title, blocks = mpl.get_legend_data()
return render_to_response('visualization/legend_shapedata_point.html',
{'title': title, 'blocks': blocks})
elif geo_type == PresentationType.GEO_TYPE_GRID:
try:
pl = get_object_or_404(
PresentationLayer, pk=request.GET['presentationlayer_id'])
file_location = (
pl.presentationgrid.png_default_legend.file_location)
file_folder = file_location[:file_location.rfind('\\')]
color_mapping = file_folder + '\colormapping.csv'
f = open(external_file_location(color_mapping), 'rb')
try:
reader = list(csv.DictReader(f))
legend_data = [
(float(r['leftbound']), r['colour']) for r in reader]
finally:
f.close()
except:
legend_data = []
return render_to_response('visualization/legend_shapedata_grid.html',
{'title': shapedatalegend.name,
'content': legend_data})
