6.5 KiB
6.5 KiB
经纬度精度通常指的是地理坐标系统中,经度和纬度值的精确度。在不同的应用场景中,经纬度的精度要求可能会有所不同。以下是一些常见的精度级别:
-
度(°):
- 1度的精度可以定位到大约111公里的范围。
- 例如,只知道一个城市的经纬度到度的精度,可以确定城市大致的地理位置,但无法确定城市内的具体位置。
-
分('):
- 1分等于1/60度,大约等于1.85公里。
- 提供到分的精度可以进一步缩小定位范围,但仍然不够精确。
-
秒("):
- 1秒等于1/3600度,大约等于30.9米。
- 提供到秒的精度可以定位到一个较小的区域,例如一个街区或一个公园。
-
小数点后几位:
- 经纬度通常可以表示为小数点后几位的十进制数。
- 小数点后第一位(十分位)表示0.1度,大约11.1公里。
- 小数点后第二位(百分位)表示0.01度,大约1.11公里。
- 小数点后第三位(千分位)表示0.001度,大约111米。
- 小数点后第四位(万分位)表示0.0001度,大约11.1米。
- 小数点后第五位(十万分位)表示0.00001度,大约1.11米。
-
米级精度:
- 一些现代GPS设备和智能手机可以提供米级精度,这通常足够用于大多数导航和定位服务。
-
厘米级精度:
- 高精度的应用,如土地测绘、建筑施工等,可能需要厘米级的精度。
在实际应用中,经纬度的精度取决于多种因素,包括GPS设备的精度、信号条件、环境因素等。例如,城市中的高楼大厦可能会影响GPS信号,导致定位精度下降。不同的应用场景,如地图服务、导航、地理信息系统(GIS)等,会根据需要选择合适的精度级别。
[{"id":1,"name":"倒回沟","lat":34.125,"lon":106.8,"targetLat":34.125,"targetLon":106.875,"elevation":1782},
{"id":2,"name":"柳沟","lat":34.125,"lon":107.125,"targetLat":34.125,"targetLon":107.125,"elevation":2063},
{"id":3,"name":"黄家沟","lat":34,"lon":106.875,"targetLat":34,"targetLon":106.875,"elevation":1612},
{"id":4,"name":"源头山","lat":34,"lon":107.18,"targetLat":34,"targetLon":107.125,"elevation":1693},
{"id":5,"name":"大竹塘沟","lat":33.875,"lon":106.92,"targetLat":33.875,"targetLon":106.875,"elevation":1562},
{"id":6,"name":"艾蒿沟","lat":33.85,"lon":107.125,"targetLat":33.875,"targetLon":107.125,"elevation":1642},
{"id":7,"name":"南沟口","lat":33.75,"lon":106.875,"targetLat":33.75,"targetLon":106.875,"elevation":1433},
{"id":8,"name":"李家坎","lat":33.9,"lon":107.15,"targetLat":33.75,"targetLon":107.125,"elevation":1490},
{"id":9,"name":"楼房沟","lat":33.6,"lon":106.9,"targetLat":33.625,"targetLon":106.875,"elevation":1372},
{"id":10,"name":"东沟","lat":33.625,"lon":107.125,"targetLat":33.625,"targetLon":107.125,"elevation":1942},
{"id":11,"name":"九条沟","lat":33.5,"lon":106.875,"targetLat":33.5,"targetLon":106.875,"elevation":1230},
{"id":12,"name":"杀牛坪","lat":33.51,"lon":107.125,"targetLat":33.5,"targetLon":107.125,"elevation":1127},
{"id":13,"name":"云雾山","lat":33.375,"lon":106.91,"targetLat":33.375,"targetLon":106.875,"elevation":1545},
{"id":14,"name":"三岔河","lat":33.375,"lon":107.125,"targetLat":33.375,"targetLon":107.125,"elevation":924},
{"id":15,"name":"沙河沟","lat":33.25,"lon":106.875,"targetLat":33.25,"targetLon":106.875,"elevation":799},
{"id":16,"name":"天台山","lat":33.25,"lon":107.13,"targetLat":33.25,"targetLon":107.125,"elevation":758},
{"id":17,"name":"五道沟","lat":33.15,"lon":106.875,"targetLat":33.125,"targetLon":106.875,"elevation":524},
{"id":18,"name":"徐望","lat":33.125,"lon":107.125,"targetLat":33.125,"targetLon":107.125,"elevation":520}]
SELECT parse_uuidv7_time('0193843c-dec3-771f-a38a-5abfb78c9ca6');
(node:2098075) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
(node:3714035) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
(node:3948376) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
(node:4100934) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
(node:517904) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
SELECT
"forecastWeatherID",
"forecastWeatherData",
CASE
WHEN "forecastWeatherData" = LAG("forecastWeatherData") OVER (ORDER BY "forecastWeatherID") THEN '相同'
ELSE '不同'
END AS "is_same"
FROM
public."weather_forecast";
pbuC_R}Y28 a1b2c2d*e(
[server]
APP_NAME = Gitea: Git with a cup of tea
RUN_USER = git
RUN_MODE = prod
LISTEN_PORT = 33033
DISABLE_SSH = false
SSH_PORT = 22022
DOMAIN = gitea.xpci.top
[database]
DB_TYPE = postgresql
DB_HOST = 127.0.0.1:5432
DB_NAME = gitea
DB_USER = postgres.xpsion000
DB_PASSWD = summit098
[security]
INSTALL_LOCK = true
SECRET_KEY = FwSOXx35tMN7fHttgORz9ok0jx6F0LSX2i0K26bTiCJKcAgs7JACEcamQQuD6dGe
INTERNAL_TOKEN = eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJuYmYiOjE3MzMzODU4NDZ9.KLnDJcFt8sTDk8Cfao00lJe9sMHIxoekiTTjqLoq2Gg
[mailer]
SMTP_HOST = smtp.qq.com:465
SMTP_FROM = shimens.qq.com
SMTP_USER = shimens.qq.com
SMTP_PASSWD = kabwyhgwqyhhfhde