def rgn_pie_charts(request):
"""
rgn_pie_charts(request)
Display pie charts at four years.
"""
smrylogger.debug("REGION PIE CHARTS VIEW")
# Set attributes to session values.
attr_dct = site_attr.get_session_attr(request)
# 1
smrylogger.debug("1 rgn_pie_charts( )|attr_dct: %s", attr_dct)
if request.method == "POST":
# Create an instance of class Region_Year_Form and populate
# with request data.
rgn_form = RegionYearForm_MODIS_LandCover(request.POST)
if rgn_form.is_valid():
# Update attributes.
for key in rgn_form.cleaned_data.keys():
attr_dct[key] = rgn_form.cleaned_data[key]
# 2
smrylogger.debug("2 rgn_pie_charts( )|attr_dct: %s", attr_dct)
# Set attributes in session to dictionary items.
site_attr.set_session_attr(request, attr_dct)
else:
# Create an instance of class RegionForm.
rgn_form = RegionYearForm_MODIS_LandCover(
initial={"region": attr_dct["region"], "year": attr_dct["year"], "dscrpt_txt": attr_dct["dscrpt_txt"]}
)
# 3
smrylogger.debug("3 rgn_pie_charts( )|attr_dct: %s", attr_dct)
# Create year list for pie charts.
chart_year_list = create_year_list(int(attr_dct["year"]), 2001, 2012, 2)
# Create an instance of class RegionImages for access to
# pie chart attributes.
rgn_img = RegionImages(img_size="500px")
# Get pie chart file names.
# Expand USA48 to full region name.
if attr_dct["region"] == "USA48":
region_name = name_dcts.abbrv_to_rgn[attr_dct["region"]]
else:
region_name = attr_dct["region"]
filenames = []
# Iterate over year list.
for year in chart_year_list:
filename = rgn_img.chart_filter(region_name, year, "LC", rgn_img.img_size, "piechart")
filenames.append(filename)
# Create request context from attributes.
dct = {}
for key in attr_dct.keys():
dct[key] = attr_dct[key]
dct["width"] = "1030"
dct["rgn_name"] = attr_dct["region"]
dct["chart_year_list"] = chart_year_list
dct["filenames"] = filenames
dct["form"] = rgn_form
dct["form_help"] = rgn_form.form_help
rgn_img = None
# Load the region map template.
template = loader.get_template("smry/rgn_pie_charts.html")
# Create context and render.
context = RequestContext(request, dct)
response = HttpResponse(template.render(context))
return response
def rgn_map(request):
"""
rgn_map(request)
Display a single map image for the specified region and year.
"""
smrylogger.debug("REGIONAL MAP VIEW")
# Set attributes to session values.
attr_dct = site_attr.get_session_attr(request)
rgn_form = RegionYearForm_MODIS_LandCover(
request.POST,
initial={"region": attr_dct["region"], "year": attr_dct["year"], "dscrpt_txt": attr_dct["dscrpt_txt"]},
)
# 1
smrylogger.debug("1 rgn_map( )|rgn_form.initial: %s", rgn_form.initial)
if request.method == "POST":
# Create an instance of class RegionYearForm and populate
# with request data.
rgn_form = RegionYearForm_MODIS_LandCover(request.POST)
if rgn_form.is_valid():
# Update attributes.
for key in rgn_form.cleaned_data.keys():
attr_dct[key] = rgn_form.cleaned_data[key]
# Set attributes in session to dictionary items.
site_attr.set_session_attr(request, attr_dct)
# 2
smrylogger.debug("2 rgn_map( )|attr_dct: %s", attr_dct)
else:
# 3
smrylogger.debug("3 rgn_map( )|Warning: rgn_form is invalid")
else:
# Create an instance of class RegionYearForm.
rgn_form = RegionYearForm_MODIS_LandCover(
initial={"region": attr_dct["region"], "year": attr_dct["year"], "dscrpt_txt": attr_dct["dscrpt_txt"]}
)
# Get file name attributes from the database.
# Expand USA48 to full region name.
if attr_dct["region"] == "USA48":
region_name = name_dcts.abbrv_to_rgn[attr_dct["region"]]
else:
region_name = attr_dct["region"]
img = RegionImages()
img.rgn_map_images(region_name, attr_dct["year"])
# Create request context from attributes.
dct = img.attr.dct
for key in attr_dct.keys():
dct[key] = attr_dct[key]
dct["width"] = "1030"
dct["rgn_name"] = region_name
dct["form"] = rgn_form
dct["form_help"] = rgn_form.form_help
img = None
# Load the region map template.
template = loader.get_template("smry/rgn_map.html")
# Create context and render.
context = RequestContext(request, dct)
response = HttpResponse(template.render(context))
return response