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runner.py
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1558 lines (1347 loc) · 56.7 KB
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from __future__ import annotations
from threading import Thread
from collections import defaultdict
from concurrent.futures import ThreadPoolExecutor
from datetime import datetime
from pathlib import Path
import collections
import argparse
import configparser
import glob
import logging
import os
import shutil
import tempfile
import time
from tqdm import tqdm
from datasketches import kll_floats_sketch
from ecoshard import taskgraph, geoprocessing
from osgeo import gdal, ogr, osr
from pyproj import CRS, Transformer
from shapely.strtree import STRtree
import pandas as pd
import fiona
import numpy as np
import geopandas as gpd
logging.getLogger("ecoshard").setLevel(logging.WARNING)
logging.getLogger("fiona").setLevel(logging.WARNING)
logger = logging.getLogger(__name__)
_LOGGING_PERIOD = 10.0
VALID_OPERATIONS = {
"mean",
"stdev",
"min",
"max",
"sum",
"total_count",
"valid_count",
}
def _make_logger_callback(message):
"""Build a timed logger callback that prints ``message`` replaced.
Args:
message (string): a string that expects 2 placement %% variables,
first for % complete from ``df_complete``, second from
``p_progress_arg[0]``.
Return:
Function with signature:
logger_callback(df_complete, psz_message, p_progress_arg)
"""
def logger_callback(df_complete, _, p_progress_arg):
"""Argument names come from the GDAL API for callbacks."""
try:
current_time = time.time()
if (current_time - logger_callback.last_time) > 5.0 or (
df_complete == 1.0 and logger_callback.total_time >= 5.0
):
# In some multiprocess applications I was encountering a
# ``p_progress_arg`` of None. This is unexpected and I suspect
# was an issue for some kind of GDAL race condition. So I'm
# guarding against it here and reporting an appropriate log
# if it occurs.
if p_progress_arg:
logger.info(message, df_complete * 100, p_progress_arg[0])
else:
logger.info(message, df_complete * 100, "")
logger_callback.last_time = current_time
logger_callback.total_time += current_time
except AttributeError:
logger_callback.last_time = time.time()
logger_callback.total_time = 0.0
except Exception:
logger.exception(
"Unhandled error occurred while logging "
"progress. df_complete: %s, p_progress_arg: %s",
df_complete,
p_progress_arg,
)
return logger_callback
def parse_and_validate_config(cfg_path: Path) -> dict:
"""Parse and validate a project configuration file.
Reads an INI-style configuration file describing a project and one or more
jobs, validates its structure and contents, resolves relative paths, and
returns a normalized configuration dictionary suitable for downstream
processing.
The configuration must contain a `[project]` section and one or more
`[job:<tag>]` sections. Extensive validation is performed on required fields,
file paths, layer names, attribute fields, and operation specifications. Most
errors result in `ValueError`; missing files raise `FileNotFoundError`.
Args:
cfg_path: Path to the configuration file. Relative paths inside the config
are resolved relative to the directory containing this file.
Returns:
A dictionary with two top-level keys:
- `project`: A dict containing validated project-level settings
(`name`, `global_work_dir`, `global_output_dir`, `log_level`).
- `job_list`: A list of dicts, one per job, containing validated and
resolved job configuration, including paths, fields, operations, and
output locations.
Raises:
ValueError: If the configuration structure is invalid, required fields are
missing, values are malformed, or semantic validation fails.
FileNotFoundError: If required files or glob patterns resolve to no files.
"""
stem = cfg_path.stem
cfg_dir = cfg_path.parent
config = configparser.ConfigParser(interpolation=None)
config.read(cfg_path)
if "project" not in config:
raise ValueError("Missing [project] section")
project_name = config["project"].get("name", "").strip()
if project_name != stem:
raise ValueError(
f"[project].name must equal config stem: expected {stem}, got {project_name}"
)
log_level_str = config["project"].get("log_level", "INFO").strip().upper()
try:
_ = getattr(logging, log_level_str)
except AttributeError:
raise ValueError(f"Invalid log_level: {log_level_str}")
global_work_dir = Path(config["project"]["global_work_dir"].strip())
if not global_work_dir.is_absolute():
global_work_dir = cfg_dir / global_work_dir
global_output_dir = Path(config["project"]["global_output_dir"].strip())
if not global_output_dir.is_absolute():
global_output_dir = cfg_dir / global_output_dir
job_tags = []
jobs_sections = []
for section in config.sections():
section_clean = section.strip()
section_lower = section_clean.lower()
if section_lower == "project":
continue
if section_lower.startswith("job:"):
tag = section_clean.split(":", 1)[1].strip()
if not tag:
raise ValueError(f"Invalid job section name: [{section_clean}]")
job_tags.append(tag)
jobs_sections.append((tag, config[section]))
else:
raise ValueError(f"unknown section type: {section_lower}")
if len(job_tags) != len(set(job_tags)):
seen = set()
dups = []
for t in job_tags:
if t in seen:
dups.append(t)
seen.add(t)
raise ValueError(f"Duplicate job tags found: {sorted(set(dups))}")
def _abs_from_cfg_dir(p: str) -> Path:
path = Path(p)
return path if path.is_absolute() else (cfg_dir / path)
def _split_top_level_commas(s: str) -> list[str]:
parts = []
buf = []
depth = 0
for ch in s:
if ch == "[":
depth += 1
buf.append(ch)
elif ch == "]":
depth = max(depth - 1, 0)
buf.append(ch)
elif ch == "," and depth == 0:
part = "".join(buf).strip()
if part:
parts.append(part)
buf = []
else:
buf.append(ch)
part = "".join(buf).strip()
if part:
parts.append(part)
return parts
def _parse_vector_pattern_entry(
entry: str, tag: str
) -> tuple[str, list[str]]:
i = entry.find("[")
j = entry.rfind("]")
if i == -1 or j == -1 or j < i:
raise ValueError(
f"[job:{tag}] base_vector_pattern entries must include fields as "
f"path[field1,field2,...]. Bad entry: {entry}"
)
pattern_str = entry[:i].strip()
fields_str = entry[i + 1 : j]
fields = [f.strip() for f in fields_str.split(",") if f.strip()]
if not pattern_str:
raise ValueError(
f"[job:{tag}] empty path in base_vector_pattern entry: {entry}"
)
if not fields:
raise ValueError(
f"[job:{tag}] empty field list in base_vector_pattern entry: {entry}"
)
return pattern_str, fields
def _glob_patterns(pattern_csv: str) -> list[Path]:
out = []
for pattern in [p.strip() for p in pattern_csv.split(",") if p.strip()]:
pat = (
pattern
if Path(pattern).is_absolute()
else str(cfg_dir / pattern)
)
out.extend([Path(p) for p in glob.glob(pat)])
return sorted({p for p in out})
job_list = []
for tag, job in jobs_sections:
agg_vector_raw = job.get("agg_vector", "").strip()
if not agg_vector_raw:
raise ValueError(f"[job:{tag}] missing agg_vector")
agg_vector = _abs_from_cfg_dir(agg_vector_raw)
if not agg_vector.exists():
raise FileNotFoundError(
f"[job:{tag}] agg_vector not found: {agg_vector}"
)
agg_field = job.get("agg_field", "").strip()
if not agg_field:
raise ValueError(f"[job:{tag}] missing agg_field")
ops_raw = job.get("operations", "").strip()
if not ops_raw:
raise ValueError(f"[job:{tag}] missing operations")
operations = [
o.strip().lower() for o in ops_raw.split(",") if o.strip()
]
if not operations:
raise ValueError(f"[job:{tag}] operations is empty")
invalid_ops = sorted(set(operations) - VALID_OPERATIONS)
if any(op for op in invalid_ops if not op.startswith("p")):
raise ValueError(
f"[job:{tag}] invalid operations: {invalid_ops}. "
f"Valid operations: {sorted(VALID_OPERATIONS)}"
)
layers = fiona.listlayers(str(agg_vector))
agg_layer = job.get("agg_layer", "").strip()
if not agg_layer:
if not layers:
raise ValueError(f"[job:{tag}] no layers found in {agg_vector}")
agg_layer = layers[0]
if agg_layer not in layers:
raise ValueError(
f'[job:{tag}] agg_layer "{agg_layer}" not found in {agg_vector}. '
f"Available layers: {layers}"
)
with fiona.open(str(agg_vector), layer=agg_layer) as src:
props = src.schema.get("properties", {})
if agg_field not in props:
raise ValueError(
f'[job:{tag}] agg_field "{agg_field}" not found in layer "{agg_layer}" of {agg_vector}. '
f"Available fields: {sorted(props.keys())}"
)
row_col_order_raw = job.get("row_col_order", "").strip()
if not row_col_order_raw:
raise ValueError(f"[job:{tag}] missing row_col_order")
row_col_order_parts = [
p.strip() for p in row_col_order_raw.split(",") if p.strip()
]
if len(row_col_order_parts) != 2:
raise ValueError(
f"[job:{tag}] row_col_order must have exactly 2 entries"
)
other_tokens = {"base", "base_raster", "base_vector"}
if "agg_field" not in row_col_order_parts:
raise ValueError(
f"[job:{tag}] row_col_order must include agg_field"
)
other = [t for t in row_col_order_parts if t != "agg_field"]
if len(other) != 1 or other[0] not in other_tokens:
raise ValueError(
f"[job:{tag}] row_col_order must be a permutation of agg_field and one of "
f"{sorted(other_tokens)}. Got: {row_col_order_raw}"
)
row_col_order = ",".join(row_col_order_parts)
outdir = global_output_dir
workdir = global_work_dir / Path(tag)
outdir.mkdir(parents=True, exist_ok=True)
workdir.mkdir(parents=True, exist_ok=True)
base_raster_path_list = []
base_vector_path_list = []
base_vector_fields = []
base_raster_pattern = job.get("base_raster_pattern", "").strip()
if base_raster_pattern:
base_raster_path_list = _glob_patterns(base_raster_pattern)
if not base_raster_path_list:
raise FileNotFoundError(
f"[job:{tag}] no files found at {base_raster_pattern}"
)
base_vector_pattern = job.get("base_vector_pattern", "").strip()
if base_vector_pattern:
parts = _split_top_level_commas(base_vector_pattern)
token_specs = []
for part in parts:
token_specs.append(_parse_vector_pattern_entry(part, tag))
base_vector_fields = token_specs[0][1]
for _, fields in token_specs[1:]:
if fields != base_vector_fields:
raise ValueError(
f"[job:{tag}] base_vector_pattern uses inconsistent field lists"
)
for pattern_str, _ in token_specs:
pat = (
pattern_str
if Path(pattern_str).is_absolute()
else str(cfg_dir / pattern_str)
)
base_vector_path_list.extend([Path(p) for p in glob.glob(pat)])
base_vector_path_list = sorted({p for p in base_vector_path_list})
if not base_vector_path_list:
raise FileNotFoundError(
f"[job:{tag}] no files found at {base_vector_pattern}"
)
for base_vector_path in base_vector_path_list:
layers = fiona.listlayers(str(base_vector_path))
if not layers:
raise ValueError(
f"[job:{tag}] no layers found in {base_vector_path}"
)
layer = layers[0]
with fiona.open(str(base_vector_path), layer=layer) as src:
props = src.schema.get("properties", {})
missing = [f for f in base_vector_fields if f not in props]
if missing:
raise ValueError(
f'[job:{tag}] missing fields {missing} in layer "{layer}" of {base_vector_path}. '
f"Available fields: {sorted(props.keys())}"
)
if (not base_raster_path_list) and (not base_vector_path_list):
raise ValueError(
f"[job:{tag}] must define at least one of base_raster_pattern or base_vector_pattern"
)
job_list.append(
{
"tag": tag,
"agg_vector": agg_vector,
"agg_layer": agg_layer,
"agg_field": agg_field,
"operations": operations,
"row_col_order": row_col_order,
"workdir": workdir,
"output_csv": outdir / f"{tag}.csv",
"base_raster_path_list": base_raster_path_list,
"base_vector_path_list": base_vector_path_list,
"base_vector_fields": base_vector_fields,
"task_graph": None,
}
)
return {
"project": {
"name": project_name,
"global_work_dir": global_work_dir,
"global_output_dir": global_output_dir,
"log_level": log_level_str,
},
"job_list": job_list,
}
def fast_zonal_statistics(
base_raster_path_band,
aggregate_vector_path,
aggregate_vector_field,
aggregate_layer_name=None,
ignore_nodata=True,
working_dir=None,
clean_working_dir=True,
percentile_list=None,
):
raster_path, raster_band_index = base_raster_path_band
logger.info(
"fast_zonal_statistics start | raster=%s band=%s | vector=%s layer=%s field=%s | ignore_nodata=%s | working_dir=%s clean=%s | percentiles=%s",
raster_path,
raster_band_index,
str(aggregate_vector_path),
aggregate_layer_name,
aggregate_vector_field,
ignore_nodata,
working_dir,
clean_working_dir,
percentile_list,
)
percentile_list = [] if percentile_list is None else list(percentile_list)
percentile_list = sorted(
{float(percentile_value) for percentile_value in percentile_list}
)
percentile_keys = [
f"p{int(percentile_value) if percentile_value.is_integer() else percentile_value}"
for percentile_value in percentile_list
]
percentile_default_values = {
percentile_key: None for percentile_key in percentile_keys
}
empty_group_stats_template = {
"min": None,
"max": None,
"total_count": 0,
"nodata_count": 0,
"valid_count": 0,
"sum": 0.0,
"stdev": None,
**percentile_default_values,
}
grouped_stats_working_template = {
**empty_group_stats_template,
"sumsq": 0.0,
}
feature_stats_template = {
"min": None,
"max": None,
"total_count": 0,
"nodata_count": 0,
"sum": 0.0,
"sumsq": 0.0,
}
def _open_vector_layer(
vector_path, layer_name, vector_label, writable=False
):
open_flags = gdal.OF_VECTOR | (gdal.OF_UPDATE if writable else 0)
vector_dataset = gdal.OpenEx(str(vector_path), open_flags)
if vector_dataset is None:
raise RuntimeError(
f"Could not open {vector_label} vector at {vector_path}"
)
if layer_name is not None:
logger.info(
"selecting %s layer by name: %s", vector_label, layer_name
)
vector_layer = vector_dataset.GetLayerByName(layer_name)
else:
logger.info("selecting default %s layer", vector_label)
vector_layer = vector_dataset.GetLayer()
if vector_layer is None:
raise RuntimeError(
f"Could not open layer {layer_name} on {vector_label} vector {vector_path}"
)
return vector_dataset, vector_layer
raster_info = geoprocessing.get_raster_info(raster_path)
raster_nodata = raster_info["nodata"][raster_band_index - 1]
raster_pixel_width = abs(raster_info["pixel_size"][0])
simplify_tolerance = raster_pixel_width * 0.5
logger.info(
"raster loaded | nodata=%s | pixel_size=%s | bbox=%s",
raster_nodata,
raster_info["pixel_size"],
raster_info["bounding_box"],
)
raster_srs = osr.SpatialReference()
raster_srs.ImportFromWkt(raster_info["projection_wkt"])
raster_srs.SetAxisMappingStrategy(osr.OAMS_TRADITIONAL_GIS_ORDER)
source_vector, source_layer = _open_vector_layer(
aggregate_vector_path, aggregate_layer_name, "source"
)
source_srs = source_layer.GetSpatialRef()
needs_reproject = True
if source_srs is not None:
source_srs = source_srs.Clone()
source_srs.SetAxisMappingStrategy(osr.OAMS_TRADITIONAL_GIS_ORDER)
needs_reproject = not source_srs.IsSame(raster_srs)
logger.info("vector SRS detected | needs_reproject=%s", needs_reproject)
else:
logger.info(
"vector SRS missing/unknown | forcing reprojection to raster SRS"
)
temp_working_dir = tempfile.mkdtemp(dir=working_dir)
projected_vector_path = os.path.join(
temp_working_dir, "projected_vector.gpkg"
)
logger.info("created temp working dir: %s", temp_working_dir)
def _raster_nodata_mask(value_array):
finite_mask = np.isfinite(value_array)
if raster_nodata is None:
return ~finite_mask
return np.isclose(value_array, raster_nodata) | ~finite_mask
try:
vector_translate_kwargs = {"format": "GPKG"}
src_path = str(aggregate_vector_path)
tmp_reprojected_path = None
if needs_reproject:
tmp_reprojected_path = Path(projected_vector_path).with_suffix(
".reprojected.gpkg"
)
logger.info(
"vector translate (reproject) start | output=%s | reproject=%s",
tmp_reprojected_path,
needs_reproject,
)
gdal.VectorTranslate(
str(tmp_reprojected_path),
src_path,
dstSRS=raster_info["projection_wkt"],
**vector_translate_kwargs,
)
src_path = str(tmp_reprojected_path)
logger.info(
"vector translate (simplify) start | output=%s | simplifyTolerance=%s | reproject=%s",
projected_vector_path,
simplify_tolerance,
needs_reproject,
)
gdal.VectorTranslate(
str(projected_vector_path),
src_path,
simplifyTolerance=simplify_tolerance,
**vector_translate_kwargs,
)
if tmp_reprojected_path:
tmp_reprojected_path.unlink()
logger.info("vector translate done | output=%s", projected_vector_path)
source_layer = None
aggregate_vector, aggregate_layer = _open_vector_layer(
projected_vector_path,
aggregate_layer_name,
"projected",
writable=True,
)
logger.info(
"scanning vector for grouping field values: %s",
aggregate_vector_field,
)
feature_id_set = set()
feature_id_to_group_value = {}
unique_group_values = set()
aggregate_layer.ResetReading()
for feature in aggregate_layer:
feature_id = feature.GetFID()
group_value = feature.GetField(aggregate_vector_field)
feature_id_set.add(feature_id)
feature_id_to_group_value[feature_id] = group_value
unique_group_values.add(group_value)
aggregate_layer.ResetReading()
logger.info(
"vector scan done | features=%d | unique %s=%d",
len(feature_id_set),
aggregate_vector_field,
len(unique_group_values),
)
raster_bounding_box = raster_info["bounding_box"]
vector_extent = aggregate_layer.GetExtent()
logger.info(
"extent check | raster_bbox=%s | vector_extent=%s",
raster_bounding_box,
vector_extent,
)
vector_min_x, vector_max_x, vector_min_y, vector_max_y = vector_extent
raster_min_x, raster_min_y, raster_max_x, raster_max_y = (
raster_bounding_box
)
has_no_intersection = (
vector_max_x < raster_min_x
or vector_min_x > raster_max_x
or vector_max_y < raster_min_y
or vector_min_y > raster_max_y
)
if has_no_intersection:
logger.error(
"aggregate vector %s does not intersect with the raster %s: vector extent %s vs raster bounding box %s",
str(aggregate_vector_path),
raster_path,
vector_extent,
raster_bounding_box,
)
grouped_stats = {
group_value: dict(empty_group_stats_template)
for group_value in unique_group_values
}
logger.info(
"returning empty stats for %d groups (no intersection)",
len(unique_group_values),
)
aggregate_layer = None
return grouped_stats
raster_path_for_stats = raster_path
logger.info("opening raster for read: %s", raster_path_for_stats)
raster_dataset = gdal.OpenEx(raster_path_for_stats, gdal.OF_RASTER)
raster_band = raster_dataset.GetRasterBand(raster_band_index)
logger.info(
"raster opened | size=%dx%d | band=%d",
raster_band.XSize,
raster_band.YSize,
raster_band_index,
)
# we need to put an 'fid' code into the vector because otherwise we are
# not guarnateed to have one
local_aggregate_field_name = "original_fid"
if aggregate_layer.FindFieldIndex(local_aggregate_field_name, 1) == -1:
aggregate_layer.CreateField(
ogr.FieldDefn(local_aggregate_field_name, ogr.OFTInteger)
)
aggregate_layer.ResetReading()
aggregate_layer.StartTransaction()
for feat in aggregate_layer:
feat.SetField(local_aggregate_field_name, feat.GetFID())
aggregate_layer.SetFeature(feat)
aggregate_layer.CommitTransaction()
aggregate_layer.ResetReading()
local_aggregate_field_name = "original_fid"
rasterize_layer_args = {
"options": [
"ALL_TOUCHED=FALSE",
f"ATTRIBUTE={local_aggregate_field_name}",
]
}
logger.info(
"disjoint sets ready total_features=%d",
len(feature_id_set),
)
feature_stats_by_id = collections.defaultdict(
lambda: dict(feature_stats_template)
)
feature_id_raster_path = os.path.join(temp_working_dir, "agg_fid.tif")
feature_id_raster_nodata = -1
logger.info("creating agg fid raster: %s", feature_id_raster_path)
geoprocessing.new_raster_from_base(
raster_path_for_stats,
feature_id_raster_path,
gdal.GDT_Int32,
[feature_id_raster_nodata],
)
feature_id_raster_offsets = list(
geoprocessing.iterblocks(
(feature_id_raster_path, 1),
offset_only=True,
largest_block=2**28,
)
)
logger.info(
"iterblocks prepared | blocks=%d",
len(feature_id_raster_offsets),
)
feature_id_raster_dataset = gdal.OpenEx(
feature_id_raster_path, gdal.GA_Update | gdal.OF_RASTER
)
feature_id_raster_band = feature_id_raster_dataset.GetRasterBand(1)
logger.info("populating disjoint layer features (transaction start)")
logger.info(
"populating disjoint layer features done (transaction commit)"
)
rasterize_callback_message = "rasterizing polygons %.1f%% complete %s"
rasterize_callback = _make_logger_callback(rasterize_callback_message)
logger.info("rasterize start")
aggregate_layer.ResetReading()
gdal.RasterizeLayer(
feature_id_raster_dataset,
[1],
aggregate_layer,
callback=rasterize_callback,
**rasterize_layer_args,
)
feature_id_raster_dataset.FlushCache()
logger.info("rasterize done")
logger.info("gathering stats from raster blocks")
block_log_time = time.time()
group_sketch = None
if percentile_list:
group_sketch = defaultdict(lambda: kll_floats_sketch(k=200))
for block_index, feature_id_offset in enumerate(
feature_id_raster_offsets
):
block_log_time = _invoke_timed_callback(
block_log_time,
lambda block_index_value=block_index: logger.info(
"block processing | %.1f%% (%d/%d blocks)",
100.0
* float(block_index_value + 1)
/ len(feature_id_raster_offsets),
block_index_value + 1,
len(feature_id_raster_offsets),
),
_LOGGING_PERIOD,
)
feature_id_block = feature_id_raster_band.ReadAsArray(
**feature_id_offset
)
raster_value_block = raster_band.ReadAsArray(**feature_id_offset)
in_polygon_mask = feature_id_block != feature_id_raster_nodata
if not np.any(in_polygon_mask):
continue
block_feature_ids = feature_id_block[in_polygon_mask]
block_raster_values = raster_value_block[in_polygon_mask]
for feature_id in np.unique(block_feature_ids):
feature_values = block_raster_values[
block_feature_ids == feature_id
]
total_count = feature_values.size
if total_count == 0:
continue
feature_nodata_mask = _raster_nodata_mask(feature_values)
nodata_count = int(np.count_nonzero(feature_nodata_mask))
feature_stats = feature_stats_by_id[feature_id]
feature_stats["total_count"] += total_count
feature_stats["nodata_count"] += nodata_count
if ignore_nodata:
feature_values = feature_values[~feature_nodata_mask]
if feature_values.size == 0:
continue
if group_sketch is not None:
group_value = feature_id_to_group_value[feature_id]
sk = group_sketch[group_value]
sk.update(
feature_values.astype(np.float32, copy=False).ravel()
)
block_min_value = np.min(feature_values)
block_max_value = np.max(feature_values)
if feature_stats["min"] is None:
feature_stats["min"] = block_min_value
feature_stats["max"] = block_max_value
else:
feature_stats["min"] = min(
feature_stats["min"], block_min_value
)
feature_stats["max"] = max(
feature_stats["max"], block_max_value
)
feature_stats["sum"] += np.sum(feature_values)
feature_stats["sumsq"] += np.sum(
feature_values * feature_values, dtype=np.float64
)
logger.info("aggregating done")
feature_id_raster_band = None
feature_id_raster_dataset = None
remaining_unset_feature_ids = feature_id_set.difference(
feature_stats_by_id
)
for missing_feature_id in remaining_unset_feature_ids:
feature_stats_by_id[missing_feature_id]
logger.info(
"unset fid pass done | remaining_unset=%d | total_fids=%d",
len(remaining_unset_feature_ids),
len(feature_id_set),
)
raster_band = None
raster_dataset = None
aggregate_layer = None
logger.info("grouping fid stats -> %s values", aggregate_vector_field)
grouped_stats = collections.defaultdict(
lambda: dict(grouped_stats_working_template)
)
for feature_id in feature_id_set:
group_value = feature_id_to_group_value[feature_id]
feature_stats = feature_stats_by_id[feature_id]
group_stats = grouped_stats[group_value]
group_stats["total_count"] += feature_stats["total_count"]
group_stats["nodata_count"] += feature_stats["nodata_count"]
group_stats["sum"] += feature_stats["sum"]
group_stats["sumsq"] += feature_stats["sumsq"]
feature_valid_count = (
feature_stats["total_count"] - feature_stats["nodata_count"]
)
if feature_valid_count > 0:
if group_stats["min"] is None:
group_stats["min"] = feature_stats["min"]
group_stats["max"] = feature_stats["max"]
else:
group_stats["min"] = min(
group_stats["min"], feature_stats["min"]
)
group_stats["max"] = max(
group_stats["max"], feature_stats["max"]
)
for group_value, group_stats in grouped_stats.items():
valid_count = (
group_stats["total_count"] - group_stats["nodata_count"]
)
group_stats["valid_count"] = valid_count
group_stats["mean"] = (
(group_stats["sum"] / valid_count) if valid_count > 0 else None
)
if group_sketch is not None:
for group_value, sk in group_sketch.items():
for p in percentile_list:
grouped_stats[group_value][
f"p{int(p) if float(p).is_integer() else p}"
] = (None if sk.is_empty() else sk.get_quantile(p / 100.0))
for group_value, group_stats in grouped_stats.items():
logger.debug(
"group=%r start total_count=%r nodata_count=%r sum=%r sumsq=%r keys=%r",
group_value,
group_stats.get("total_count"),
group_stats.get("nodata_count"),
group_stats.get("sum"),
group_stats.get("sumsq"),
sorted(group_stats.keys()),
)
valid_count = (
group_stats["total_count"] - group_stats["nodata_count"]
)
group_stats["valid_count"] = valid_count
logger.debug(
"group=%r computed valid_count=%r", group_value, valid_count
)
if valid_count > 0:
mean_value = group_stats["sum"] / valid_count
logger.debug(
"group=%r mean_value=%r (sum=%r / valid_count=%r)",
group_value,
mean_value,
group_stats["sum"],
valid_count,
)
variance_value = (group_stats["sumsq"] / valid_count) - (
mean_value * mean_value
)
logger.debug(
"group=%r raw variance_value=%r (sumsq/valid_count=%r - mean^2=%r)",
group_value,
variance_value,
group_stats["sumsq"] / valid_count,
mean_value * mean_value,
)
if variance_value < 0:
logger.debug(
"group=%r variance_value < 0, clamping to 0.0 (was %r)",
group_value,
variance_value,
)
variance_value = 0.0
stdev_value = float(np.sqrt(variance_value))
group_stats["stdev"] = stdev_value
logger.debug(
"group=%r stdev=%r sqrt(variance_value=%r)",
group_value,
stdev_value,
variance_value,
)
else:
group_stats["stdev"] = None
logger.debug(
"group=%r stdev=None because valid_count <= 0 (total_count=%r nodata_count=%r)",
group_value,
group_stats["total_count"],
group_stats["nodata_count"],
)
logger.debug(
"group=%r deleting sumsq (current sumsq=%r)",
group_value,
group_stats.get("sumsq"),
)
del group_stats["sumsq"]
logger.debug(
"group=%r end valid_count=%r stdev=%r keys_now=%r",
group_value,
group_stats.get("valid_count"),
group_stats.get("stdev"),
sorted(group_stats.keys()),
)
logger.info("grouping done | groups=%d", len(grouped_stats))
logger.info("fast_zonal_statistics done")
return dict(grouped_stats)
finally:
if clean_working_dir:
logger.info("cleaning temp working dir: %s", temp_working_dir)
shutil.rmtree(temp_working_dir)
def run_vector_stats_job(
base_vector_path_list,
base_vector_fields,
agg_vector,
agg_layer: str,
agg_field,
operations,
output_csv: Path,
workdir: Path,
tag: str,
row_col_order: str,
job_type: str,
):
"""Run a vector-based statistics job and write aggregated results to CSV.
For each feature in the base vector datasets, assigns it to the nearest
aggregated geometry (after dissolving by `agg_field`) and computes summary
statistics over specified attribute fields. Supported statistics include
counts, sums, means, standard deviations, minima, maxima, and percentiles.
Results are aggregated per dissolved geometry and written to a CSV file.
All base vectors are reprojected to the aggregation CRS if necessary. Nearest
geometry assignment is accelerated using a spatial index and processed in
chunks with multithreading.
Args:
base_vector_path_list: List of paths to base vector datasets whose features
will be assigned to aggregation geometries.
base_vector_fields: List of attribute field names to aggregate from each
base vector dataset.