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#17 Add possibility to import ARHEM haies remarquables

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nobohan 2021-09-15 11:46:55 +02:00
parent 3ed4872b60
commit 177a54a444
3 changed files with 57 additions and 15 deletions
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5
utils/README.md
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@ -17,7 +17,7 @@ $ source bin/activate
## Import of the layer Arbres remarquables
- This data is downloadable by <http://geoportail.wallonie.be/catalogue/d594f5a3-34ac-4cc2-a357-aae5d5263f35.html>
- The layer MUST be converted to a valid geojson format in WGS84 coordinates.
- The layer MUST be converted to a valid geojson format in WGS84 coordinates. You can use QGIS to do so.
- Then simply run the script `geojson2sql` to produce a SQL file with some INSERT instructions.
```bash
@ -42,6 +42,9 @@ Some values in these list MUST follow some special conventions:
- the "__POINT__" value will be converted to a PostGIS ST_GeomFromText formula based on the coordinates of the geojson file
- the "__NOW__" value will be converted to a formula that creates a timestamp
Furthermore, the `id_program` and `id_type` MUST match the correct values! The first field will decide which program the sites will be attached to.
Lastly, if the values starts with `properties.`, it will be mapped to a property in the geojson. E.g, `properties.COMMENTAIR`.
For populating the table of visits, the same function is applied. But there is another special convention that applies for building the json details of the visit: the "__JSON__" value will be converted to a dedicated formula that will build the json object in the database.

59
utils/geojson2sql.py
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@ -2,25 +2,33 @@ import geojson
import json
def convert_coordinates_to_geom(coordinates, geometry_type):
""" Returns a string with a valid PostGIS command for creating a geometry from an array of coordinates """
if geometry_type == '__POINT__': # TODO other cases
res = f'ST_GeomFromText(\'POINT({coordinates[0]} {coordinates[1]})\'),'
""" Returns a string with a valid PostGIS command for creating a WGS84 geometry from an array of coordinates """
if geometry_type == '__POINT__':
res = f'ST_GeomFromText(\'POINT({coordinates[0]} {coordinates[1]})\', 4326),'
if geometry_type == '__LINESTRING__': # TODO POLYGON
s = ''
for c in coordinates[0]:
s += f'{c[0]} {c[1]},'
res = f'ST_GeomFromText(\'LINESTRING({s[:-1]})\', 4326),'
return res
def safe_json(string):
""" Encodes a string a json and escape single quote for postgresql"""
return json.dumps(string.replace("'", "''"))
def convert_feature_to_json(feature):
def convert_feature_to_json(feature, program_name):
""" Returns a string with a json of properties """
res = f'"hauteur": {feature.properties["H"]},' if feature.properties["H"] else ''
res += f'"circonference": {feature.properties["CIRC"]},' if feature.properties["CIRC"] else ''
res += f'"etatsanitaire": {feature.properties["SANIT"]},' if feature.properties["SANIT"] else ''
res += f'"espece": {safe_json(feature.properties["SPFR"])},' if feature.properties["SPFR"] else ''
res += f'"remarques": {safe_json(feature.properties["COMMENTAIR"])},' if feature.properties["COMMENTAIR"] else ''
if program_name == 'ARHEM_ARBRES':
res += f'"circonference": {feature.properties["CIRC"]},' if feature.properties["CIRC"] else ''
res += f'"espece": {safe_json(feature.properties["SPFR"])},' if feature.properties["SPFR"] else ''
elif program_name == 'ARHEM_HAIES':
res += f'"espece_1": {safe_json(feature.properties["SPFR"])},' if feature.properties["SPFR"] else ''
return '\'{' + res[:-1] + '}\','
def import_geosjon_as_sql(filename, sql_filename, schema_name, table_name, column_list, values_list):
@ -31,28 +39,33 @@ def import_geosjon_as_sql(filename, sql_filename, schema_name, table_name, colum
sql_f = open(sql_filename,'w')
for i,f in enumerate(g['features']):
#print(f)
sql = f'INSERT INTO "{schema_name}"."{table_name}" ('
col_name = ''
col_value = ''
for j,c in enumerate(column_list):
if values_list[j] == '__ID__':
if values_list[j] == '__ID1000000__':
col_name += f'"{c}",'
col_value += f'\'{1000000 + i}\','
elif values_list[j] == '__ID2000000__':
col_name += f'"{c}",'
col_value += f'\'{2000000 + i}\','
elif values_list[j] == '__UUID__':
col_name += f'"{c}",'
col_value += 'uuid_generate_v4(),'
elif values_list[j] == '__NOW__':
col_name += f'"{c}",'
col_value += 'now()::timestamptz,'
elif values_list[j] == '__POINT__':
elif values_list[j] == '__POINT__' or values_list[j] == '__LINESTRING__' :
col_name += f'"{c}",'
col_value += convert_coordinates_to_geom(f.geometry.coordinates, values_list[j])
elif values_list[j] == '__JSON__':
elif values_list[j] == '__JSON_ARHEM_ARBRES__':
col_name += f'"{c}",'
col_value += convert_feature_to_json(f)
col_value += convert_feature_to_json(f, 'ARHEM_ARBRES')
elif values_list[j] == '__JSON_ARHEM_HAIES__':
col_name += f'"{c}",'
col_value += convert_feature_to_json(f, 'ARHEM_HAIES')
elif values_list[j].startswith('properties.'):
col_name += f'"{c}",'
prop = values_list[j].split('.')[1]
@ -75,7 +88,7 @@ if __name__ == '__main__':
schema_name= 'gnc_sites'
table_name = 't_sites'
column_list = ['id_site', 'uuid_sinp', 'id_program', 'name', 'geom', 'timestamp_create', 'id_type', 'obs_txt']
values_list = ['__ID__', '__UUID__', '2', 'import arbres remarquables', '__POINT__', '__NOW__', '1', 'import' ]
values_list = ['__ID1000000__', '__UUID__', '1', 'import arbres remarquables', '__POINT__', '__NOW__', '1', 'import' ]
import_geosjon_as_sql(filename, sql_filename, schema_name, table_name, column_list, values_list)
# import arbres.geojson into gnc_sites.t_visit
@ -84,5 +97,23 @@ if __name__ == '__main__':
schema_name= 'gnc_sites'
table_name = 't_visit'
column_list = ['id_site', 'json_data', 'timestamp_create', 'obs_txt', 'date']
values_list = ['__ID__', '__JSON__', '__NOW__', 'import', '__NOW__']
values_list = ['__ID1000000__', '__JSON_ARHEM_ARBRES__', '__NOW__', 'import', '__NOW__']
import_geosjon_as_sql(filename, sql_filename, schema_name, table_name, column_list, values_list)
# import haies.geojson into gnc_sites.t_sites
filename = './gis/haies.geojson'
sql_filename = './sql/haies-sites.sql'
schema_name= 'gnc_sites'
table_name = 't_sites'
column_list = ['id_site', 'uuid_sinp', 'id_program', 'name', 'geom', 'timestamp_create', 'id_type', 'obs_txt']
values_list = ['__ID2000000__', '__UUID__', '3', 'import haies remarquables', '__LINESTRING__', '__NOW__', '3', 'import' ]
import_geosjon_as_sql(filename, sql_filename, schema_name, table_name, column_list, values_list)
# import haies.geojson into gnc_sites.t_visit
filename = './gis/haies.geojson'
sql_filename = './sql/haies-visits.sql'
schema_name= 'gnc_sites'
table_name = 't_visit'
column_list = ['id_site', 'json_data', 'timestamp_create', 'obs_txt', 'date']
values_list = ['__ID2000000__', '__JSON_ARHEM_HAIES__', '__NOW__', 'import', '__NOW__']
import_geosjon_as_sql(filename, sql_filename, schema_name, table_name, column_list, values_list)

8
utils/gis/haies.geojson Normal file
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@ -0,0 +1,8 @@
{
"type": "FeatureCollection",
"name": "haies",
"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },
"features": [
{ "type": "Feature", "properties": { "OBJECTID": 2127.0, "INSLOC": 64075, "SITEAR": 2, "AR": 1, "TYPE": 602, "ADRESSE": "RUE DU CHAMP DES OISEAUX - AMBRESINEAU", "DOMAINE": "P", "ARBRHAIE": "A", "DATEOFF": "20130222000000", "SANIT": null, "TRAD": null, "CIRC": 100, "H": 20, "ANOBS": 1992, "INTERET": "D,P", "ENV1": "A", "ENV2": "V", "REF": null, "COMMENTAIR": "5 sujets.", "EVOLUTION": null, "PHOTO": null, "ETAPE": "O", "GENRE": "Corylus", "SP": "colurna", "CULTIVAR": null, "SPFR": "Noisetier de Byzance" }, "geometry": { "type": "MultiLineString", "coordinates": [ [ [ 5.030018725042887, 50.625644805470124 ], [ 5.030077773870591, 50.625760715854604 ], [ 5.030080893503914, 50.625983281318334 ], [ 5.030017972700604, 50.626248619803363 ] ] ] } }
]
}