def summarize_by_huc12(geometries):
"""Calculate current and projected urbanization for each decade from 2020 to
2100.
Parameters
----------
geometries : Series of pygeos geometries, indexed by HUC12 id
"""
index = []
results = []
for huc12, geometry in Bar(
"Calculating Urbanization counts for HUC12", max=len(geometries)
).iter(geometries.iteritems()):
zone_results = extract_by_geometry(
[to_dict(geometry)], bounds=pg.total_bounds(geometry)
)
if zone_results is None:
continue
index.append(huc12)
results.append(zone_results)
cols = ["shape_mask", "urban"] + URBAN_YEARS
df = pd.DataFrame(results, index=index)[cols]
df = df.reset_index().rename(columns={"index": "id"}).round()
df.columns = [str(c) for c in df.columns]
df.to_feather(results_filename)
def summarize_raster_by_geometry(geometries,
extract_func,
outfilename,
progress_label="",
bounds=None,
**kwargs):
"""Summarize values of input dataset by geometry and writes results to
a feather file, with one column for shape_mask and one for each raster value.
Parameters
----------
geometries : Series of pygeos geometries, indexed by HUC12 / marine block
extract_func : function that extracts results for each geometry
outfilename : str
progress_label : str
"""
if bounds is not None:
# select only those areas that overlap input area
tree = pg.STRtree(geometries)
ix = tree.query(pg.box(*bounds))
geometries = geometries.iloc[ix].copy()
if not len(geometries):
return
index = []
results = []
for ix, geometry in Bar(progress_label,
max=len(geometries)).iter(geometries.iteritems()):
zone_results = extract_func([to_dict(geometry)],
bounds=pg.total_bounds(geometry),
**kwargs)
if zone_results is None:
continue
index.append(ix)
results.append(zone_results)
if not len(results):
return
df = pd.DataFrame(results, index=index)
results = df[["shape_mask"]].copy()
results.index.name = "id"
avg_cols = [c for c in df.columns if c.endswith("_avg")]
# each column is an array of counts for each
for col in df.columns.difference(["shape_mask"] + avg_cols):
s = df[col].apply(pd.Series).fillna(0)
s.columns = [f"{col}_{c}" for c in s.columns]
results = results.join(s)
if len(avg_cols) > 0:
results = results.join(df[avg_cols]).round()
results.reset_index().to_feather(outfilename)
def __init__(self, geometry, crs, name):
"""Initialize a custom area from a pygeos geometry.
Parameters
----------
geometry : pygeos Geometry
crs : pyproj CRS object
name : string
name of custom area
"""
self.geometry = to_crs(geometry, crs, DATA_CRS)
self.bounds = pg.total_bounds(self.geometry)
# wrap geometry as a dict for rasterio
self.shapes = np.asarray([to_dict(self.geometry[0])])
self.name = name
def summarize_by_huc12(geometries):
"""Summarize by HUC12
Parameters
----------
geometries : Series of pygeos geometries, indexed by HUC12 id
"""
# find the indexes of the geometries that overlap with SLR bounds; these are the only
# ones that need to be analyzed for SLR impacts
slr_bounds = gp.read_feather(slr_bounds_filename).geometry
tree = pg.STRtree(geometries)
ix = tree.query(slr_bounds.geometry.values.data[0], predicate="intersects")
geometries = geometries.iloc[ix].copy()
if not len(geometries):
return
results = []
index = []
for huc12, geometry in Bar(
"Calculating SLR counts for HUC12", max=len(geometries)
).iter(geometries.iteritems()):
zone_results = extract_by_geometry(
[to_dict(geometry)], bounds=pg.total_bounds(geometry)
)
if zone_results is None:
continue
index.append(huc12)
results.append(zone_results)
df = pd.DataFrame(results, index=index)
# reorder columns
df = df[["shape_mask"] + list(df.columns.difference(["shape_mask"]))]
# extract only areas that actually had SLR pixels
df = df[df[df.columns[1:]].sum(axis=1) > 0]
df.columns = [str(c) for c in df.columns]
df = df.reset_index().rename(columns={"index": "id"}).round()
df.to_feather(results_filename)
def summarize_blueprint_by_geometry(geometries, outfilename, marine=False):
counts = []
means = []
index = []
for ix, geometry in Bar(
"Calculating overlap with Blueprint, Corridors, and Indicators",
max=len(geometries),
).iter(geometries.iteritems()):
zone_results = extract_by_geometry(
[to_dict(geometry)],
bounds=pg.total_bounds(geometry),
marine=marine,
zonal_means=True,
)
if zone_results is None:
continue
index.append(ix)
counts.append(zone_results["counts"])
means.append(zone_results["means"])
count_df = pd.DataFrame(counts, index=index)
mean_df = pd.DataFrame(means, index=index).round()
mean_df.columns = [f"{c}_avg" for c in mean_df.columns]
results = count_df[["shape_mask"]].copy()
results.index.name = "id"
### Export the Blueprint, corridors, and indicators
# each column is an array of counts for each
for col in count_df.columns.difference(["shape_mask"]):
s = count_df[col].apply(pd.Series).fillna(0)
s.columns = [f"{col}_{c}" for c in s.columns]
results = results.join(s)
results = results.join(mean_df)
results.reset_index().to_feather(outfilename)
async def get_aoi_map_image(geometry, center, zoom, width, height):
"""Create a rendered map image of the area of interest.
Parameters
----------
geometry : pygeos Geometry object (singular)
center : [longitude, latitude]
zoom : float
width : int
map width
height : int
map height
Returns
-------
Image object
"""
style = deepcopy(STYLE)
style["sources"]["aoi"]["data"] = to_dict(geometry)
params = {
"style": style,
"center": center,
"zoom": zoom,
"width": width,
"height": height,
}
try:
map = await render_mbgl_map(params)
except Exception as ex:
return None, f"Error generating aoi image ({type(ex)}): {ex}"
return map, None
async def get_locator_map_image(longitude, latitude, bounds, geometry=None):
"""
Create a rendered locator map image.
If the bounds cover a large area, `geometry` will be rendered if available,
otherwise a box covering the bounds will be rendered. Otherwise, a
representative point will be displayed on the map.
Parameters
----------
latitude : float
latitude of area of interest marker
longitude : float
longitude of area of interest marker
bounds : list-like of xmin, ymin, xmax, ymax
bounds of geometry to locate on map
geometry : pygeos.Geometry, optional (default: None)
If present, will be used to render the area of interest if the bounds
are very large.
Returns
-------
Image object
"""
style = deepcopy(LOCATOR_STYLE)
xmin, ymin, xmax, ymax = bounds
# If boundary is a large extent (more than 0.5 degree on edge)
# and has big enough area then render geometry or a box instead of a point
# NOTE: some multipart features cover large extent and small area, so these
# drop out if we do not use area threshold.
if xmax - ymax >= 0.5 or ymax - ymin >= 0.5:
if geometry and pg.area(geometry) > 0.1:
geometry = to_dict(geometry)
else:
geometry = ({
"type":
"Polygon",
"coordinates": [[
[xmin, ymin],
[xmin, ymax],
[xmax, ymax],
[xmax, ymin],
[xmin, ymin],
]],
}, )
style["sources"]["feature"] = {"type": "geojson", "data": geometry}
else:
style["sources"]["marker"] = {
"type": "geojson",
"data": {
"type": "Point",
"coordinates": [longitude, latitude]
},
}
params = {
"style": style,
"center": CENTER,
"zoom": ZOOM,
"width": WIDTH,
"height": HEIGHT,
}
try:
map = await render_mbgl_map(params)
except Exception as ex:
return None, f"Error generating locator image ({type(ex)}): {ex}"
return map, None
inputs.reset_index().rename(columns={
"index": "value"
}).set_index("inputs"),
on="inputs",
)
write_dataframe(df, bnd_dir / "input_areas.fgb")
df.to_feather(out_dir / "boundaries/input_areas.feather")
# Rasterize to match the blueprint
df = pd.DataFrame(df[["geometry", "value"]].copy())
df.geometry = df.geometry.values.data
# convert to pairs of GeoJSON , value
shapes = df.apply(lambda row: (to_dict(row.geometry), row.value), axis=1)
print("Rasterizing inputs...")
with rasterio.open(blueprint_filename) as src:
data = rasterize(shapes.values,
src.shape,
transform=src.transform,
dtype="uint8",
fill=255)
profile = src.profile
outfilename = out_dir / "input_areas.tif"
with rasterio.open(outfilename, "w", **profile) as out:
out.write(data, 1)
huc12["acres"] = (pg.area(huc12.geometry.values.data) * M2_ACRES).round().astype("uint")
# for those that touch the edge of the region, drop any that are not >= 50% in
# raster input area. We are not able to use polygon intersection because it
# takes too long.
tree = pg.STRtree(huc12.geometry.values.data)
ix = tree.query(bnd, predicate="contains")
edge_df = huc12.loc[~huc12.id.isin(huc12.iloc[ix].id)].copy()
geometries = pd.Series(edge_df.geometry.values.data, index=edge_df.id)
drop_ids = []
for id, geometry in Bar(
"Calculating HUC12 overlap with input area", max=len(geometries)
).iter(geometries.iteritems()):
percent_overlap = calculate_percent_overlap(
input_area_mask, [to_dict(geometry)], bounds=pg.total_bounds(geometry)
)
if percent_overlap < 50:
drop_ids.append(id)
print(f"Dropping {len(drop_ids)} HUC12s that do not sufficiently overlap input areas")
huc12 = huc12.loc[~huc12.id.isin(drop_ids)].copy()
# extract geographic bounds
huc12_wgs84 = huc12.to_crs(GEO_CRS)
huc12 = huc12.join(huc12_wgs84.bounds)
# Save in EPSG:5070 for analysis
huc12.to_feather(analysis_dir / "huc12.feather")
write_dataframe(huc12, bnd_dir / "huc12.gpkg")
