- html - 出于某种原因,IE8 对我的 Sass 文件中继承的 html5 CSS 不友好?
- JMeter 在响应断言中使用 span 标签的问题
- html - 在 :hover and :active? 上具有不同效果的 CSS 动画
- html - 相对于居中的 html 内容固定的 CSS 重复背景?
我正在开展一个项目,其中我在印度主要城市拥有大约 100000 个地址(这是数据库中的一个表)。我想知道是否可以获得到最近的地标(购物中心、医院和机场等)的距离。理想情况下,我希望将这些距离合并到父表中。一旦我们找到了如何去做,我们就会有 Java 和 Php 编码人员来完成它。任何指示都会有很大帮助。谢谢。
最佳答案
(我可能会在这里陈述显而易见的内容,但是,如果是这种情况,请忽略这些要点并继续阅读。)
(“如乌鸦飞翔”并限制搜索/处理负载)
确定两点之间的距离可以在 SQL 数据库/SELECT 语句中完成。
引用:MySQL Great Circle (Haversine Formula)
SELECT
acos(
cos(radians( $latitude0 ))
* cos(radians( $latitude1 ))
* cos(radians( $longitude0 ) - radians( $longitude1 ))
+ sin(radians( $latitude0 ))
* sin(radians( $latitude1 ))
)*6371 AS greatCircleDistanceKMs
FROM yourTable
如果您用来比较的点的纬度/经度可能会发生变化(即用户的地址等),则可以动态使用,或者可以用于执行多个文件的更新您用于比较的点已设置的事件(您办公室的位置等)
如果要动态使用它,那么还建议限制运行此函数的行集。
WHERE
searchLatitude BETWEEN latitude+1 AND latitude-1
AND searchLongitude BETWEEN longitude+1 and longitude-1
本质上,这将在 searchLatitude/searchLongitude 点周围创建一个 1 度的框,并减少所需的计算数量。
最终结果
Google Directions API为您提供使用简单的 HTTP 请求获取两点之间实际行驶距离的功能。
示例 URL 为“Chhatrapati Shivaji Int'l Airport”到“Taj Mahal Palace & Tower”:
http://maps.google.com/maps/api/directions/xml?origin=Chhatrapati+Shivaji+International+Airport&destination=Taj+Mahal+Palace+%26+Tower,+Mahakavi+Bhushan+Road,+Apollo+Bandar+Mumbai&sensor=false
这将返回 XML 响应:
<?xml version="1.0" encoding="UTF-8"?>
<DirectionsResponse>
<status>OK</status>
<route>
<summary>Western Express Hwy/NH 8</summary>
<leg>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>19.0966100</lat>
<lng>72.8656200</lng>
</start_location>
<end_location>
<lat>19.1091100</lat>
<lng>72.8539000</lng>
</end_location>
<polyline>
<points>yxpsBcqv{LuAd@aEf@eBl@a^lQqDpBiS`PgAnAeArCoA`JiAbK</points>
<levels>B???@?@???B</levels>
</polyline>
<duration>
<value>112</value>
<text>2 mins</text>
</duration>
<html_instructions>Head <b>north</b> on <b>Sahar Rd</b> toward <b>I A Project Rd</b> <div style="font-size:0.9em">Pass by Priyadeep (on the left in 1.9&nbsp;km)</div></html_instructions>
<distance>
<value>1978</value>
<text>2.0 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>19.1091100</lat>
<lng>72.8539000</lng>
</start_location>
<end_location>
<lat>19.1061700</lat>
<lng>72.8538800</lng>
</end_location>
<polyline>
<points>}fssB{gt{LpHr@zCO|B_@</points>
<levels>B??B</levels>
</polyline>
<duration>
<value>52</value>
<text>1 min</text>
</duration>
<html_instructions>Turn <b>left</b> toward <b>Western Express Hwy/NH 8</b></html_instructions>
<distance>
<value>332</value>
<text>0.3 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>19.1061700</lat>
<lng>72.8538800</lng>
</start_location>
<end_location>
<lat>19.0991500</lat>
<lng>72.8540500</lng>
</end_location>
<polyline>
<points>qtrsBwgt{L|BAbTqCfCQrBJ|IvB</points>
<levels>B??@?B</levels>
</polyline>
<duration>
<value>82</value>
<text>1 min</text>
</duration>
<html_instructions>Continue straight onto <b>Western Express Hwy/NH 8</b> <div style="font-size:0.9em">Pass by Giriraj Ceramic Products (on the left in 750&nbsp;m)</div></html_instructions>
<distance>
<value>799</value>
<text>0.8 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>19.0991500</lat>
<lng>72.8540500</lng>
</start_location>
<end_location>
<lat>19.0931000</lat>
<lng>72.8507700</lng>
</end_location>
<polyline>
<points>uhqsByht{LdMlDxG|AdC~@jBdAzBjB~@hAj@fA</points>
<levels>B??@???B</levels>
</polyline>
<duration>
<value>35</value>
<text>1 min</text>
</duration>
<html_instructions>Slight <b>right</b> toward <b>Western Express Hwy/NH 8</b></html_instructions>
<distance>
<value>772</value>
<text>0.8 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>19.0931000</lat>
<lng>72.8507700</lng>
</start_location>
<end_location>
<lat>19.0507200</lat>
<lng>72.8404700</lng>
</end_location>
<polyline>
<points>{bpsBits{LjAfCr@rCbCdS`@vB\dAhAdBvBhB`Af@`Ch@bBHnAExCk@nAm@l@e@nGuF~Ay@fDaAlXcDxx@f@~UBbPPvVF|HLhXAdD\~Bn@lCxA|AbBjAdCz@nDfGfS</points>
<levels>B????@???@??@????@@?????@???@??B</levels>
</polyline>
<duration>
<value>252</value>
<text>4 mins</text>
</duration>
<html_instructions>Continue straight onto <b>Western Express Hwy/NH 8</b> <div style="font-size:0.9em">Pass by St Joseph's (on the left in 3.5&nbsp;km)</div></html_instructions>
<distance>
<value>5666</value>
<text>5.7 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>19.0507200</lat>
<lng>72.8404700</lng>
</start_location>
<end_location>
<lat>19.0429200</lat>
<lng>72.8401400</lng>
</end_location>
<polyline>
<points>_zgsB}sq{LfBjBj@ZxB^h@XZfAN~Ab@b@l@VnJEn@MrBg@lQgH</points>
<levels>B???????@?@?B</levels>
</polyline>
<duration>
<value>54</value>
<text>1 min</text>
</duration>
<html_instructions>Exit onto <b>S V Rd</b> <div style="font-size:0.9em">Pass by Saraswati Dattatray Electricals &amp; Co., (SDEC) (on the left in 500&nbsp;m)</div></html_instructions>
<distance>
<value>1019</value>
<text>1.0 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>19.0429200</lat>
<lng>72.8401400</lng>
</start_location>
<end_location>
<lat>19.0332800</lat>
<lng>72.8422800</lng>
</end_location>
<polyline>
<points>gifsB{qq{LXAxCcAfLsEzDiAxDs@jC[lFQtIDdFR</points>
<levels>B????@???B</levels>
</polyline>
<duration>
<value>77</value>
<text>1 min</text>
</duration>
<html_instructions>Continue onto <b>A S Gaya Marg/Lady Jamshedji Rd</b> <div style="font-size:0.9em">Pass by Dawood Khan (on the left)</div></html_instructions>
<distance>
<value>1117</value>
<text>1.1 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>19.0332800</lat>
<lng>72.8422800</lng>
</start_location>
<end_location>
<lat>19.0249800</lat>
<lng>72.8406100</lng>
</end_location>
<polyline>
<points>_mdsBg_r{LtI^lb@pFbBXrA`@</points>
<levels>B???B</levels>
</polyline>
<duration>
<value>62</value>
<text>1 min</text>
</duration>
<html_instructions>At Emerald Surgicare (P) Ltd, continue onto <b>Lady Jamshedjee Rd</b> <div style="font-size:0.9em">Pass by Petrol Pump (on the left)</div></html_instructions>
<distance>
<value>941</value>
<text>0.9 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>19.0249800</lat>
<lng>72.8406100</lng>
</start_location>
<end_location>
<lat>19.0217700</lat>
<lng>72.8424900</lng>
</end_location>
<polyline>
<points>cybsBytq{LvEeB~@gAlB}CXSx@SfDC</points>
<levels>B?????B</levels>
</polyline>
<duration>
<value>41</value>
<text>1 min</text>
</duration>
<html_instructions>Turn <b>left</b> at Gadkari Chowk onto <b>NC Kelkar Rd</b> <div style="font-size:0.9em">Pass by Dhyan Securities Pvt Ltd (on the right)</div></html_instructions>
<distance>
<value>432</value>
<text>0.4 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>19.0217700</lat>
<lng>72.8424900</lng>
</start_location>
<end_location>
<lat>19.0179000</lat>
<lng>72.8475600</lng>
</end_location>
<polyline>
<points>aebsBq`r{L^c@tAm@XB^QpHeNbHoL</points>
<levels>B?????B</levels>
</polyline>
<duration>
<value>63</value>
<text>1 min</text>
</duration>
<html_instructions>At the roundabout, take the <b>1st</b> exit onto <b>Tilak Bridge</b> <div style="font-size:0.9em">Pass by Vanmali Chk (on the right)</div></html_instructions>
<distance>
<value>702</value>
<text>0.7 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>19.0179000</lat>
<lng>72.8475600</lng>
</start_location>
<end_location>
<lat>19.0131500</lat>
<lng>72.8550800</lng>
</end_location>
<polyline>
<points>{lasBg`s{LUa@Fs@RSv@DvZ{j@</points>
<levels>B????B</levels>
</polyline>
<duration>
<value>160</value>
<text>3 mins</text>
</duration>
<html_instructions>At the roundabout, take the <b>2nd</b> exit onto <b>Tilak Rd</b> <div style="font-size:0.9em">Pass by Sargam Florists (on the left)</div></html_instructions>
<distance>
<value>987</value>
<text>1.0 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>19.0131500</lat>
<lng>72.8550800</lng>
</start_location>
<end_location>
<lat>18.9933600</lat>
<lng>72.8515000</lng>
</end_location>
<polyline>
<points>eo`sBgot{LzB`AdDr@jMv@rHVhRN`Zj@vMjB~E^zEt@lIbCdDbC</points>
<levels>B??@??@??@?B</levels>
</polyline>
<duration>
<value>233</value>
<text>4 mins</text>
</duration>
<html_instructions>Turn <b>right</b> at Shobha Hospital onto <b>Rafi Ahmed Kidwai Marg</b> <div style="font-size:0.9em">Pass by Sukkur Bhawan (on the left)</div></html_instructions>
<distance>
<value>2264</value>
<text>2.3 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>18.9933600</lat>
<lng>72.8515000</lng>
</start_location>
<end_location>
<lat>18.9675800</lat>
<lng>72.8448800</lng>
</end_location>
<polyline>
<points>os|rB{xs{L~AbBbMtOtYjb@dAn@pCr@`ZsEp[aEvJ}AzPwBzBa@nBI`E@zFz@~Ad@^T</points>
<levels>B??@?@????@????B</levels>
</polyline>
<duration>
<value>203</value>
<text>3 mins</text>
</duration>
<html_instructions>Continue onto <b>Barrister Nath Pai Marg</b> <div style="font-size:0.9em">Pass by Everest Marine Ply - J. Himatlal &amp; Co. (on the left in 1.6&nbsp;km)</div></html_instructions>
<distance>
<value>3360</value>
<text>3.4 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>18.9675800</lat>
<lng>72.8448800</lng>
</start_location>
<end_location>
<lat>18.9382900</lat>
<lng>72.8379900</lng>
</end_location>
<polyline>
<points>krwrBoor{LxCf@rBh@`Bf@nCpAnAFpAEfBSr@Y^?dk@nIdm@rJbEb@rz@xM</points>
<levels>B????????????B</levels>
</polyline>
<duration>
<value>246</value>
<text>4 mins</text>
</duration>
<html_instructions>At Our Lady of the Rosary Church, continue onto <b>P D Mello Rd</b> <div style="font-size:0.9em">Pass by Petrol Pump (on the left in 1.9&nbsp;km)</div></html_instructions>
<distance>
<value>3356</value>
<text>3.4 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>18.9382900</lat>
<lng>72.8379900</lng>
</start_location>
<end_location>
<lat>18.9344900</lat>
<lng>72.8371000</lng>
</end_location>
<polyline>
<points>i{qrBmdq{LjIlAvI|ArAD</points>
<levels>B??B</levels>
</polyline>
<duration>
<value>56</value>
<text>1 min</text>
</duration>
<html_instructions>Continue onto <b>S Bhagat Singh Marg</b> <div style="font-size:0.9em">Pass by SIB (on the left)</div></html_instructions>
<distance>
<value>433</value>
<text>0.4 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>18.9344900</lat>
<lng>72.8371000</lng>
</start_location>
<end_location>
<lat>18.9321900</lat>
<lng>72.8357900</lng>
</end_location>
<polyline>
<points>qcqrB{~p{Ll@?bDf@^RtC`DbAf@</points>
<levels>B????B</levels>
</polyline>
<duration>
<value>32</value>
<text>1 min</text>
</duration>
<html_instructions>Continue onto <b>Mint Rd</b> <div style="font-size:0.9em">Pass by Mint Police Station (on the left)</div></html_instructions>
<distance>
<value>302</value>
<text>0.3 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>18.9321900</lat>
<lng>72.8357900</lng>
</start_location>
<end_location>
<lat>18.9243200</lat>
<lng>72.8320700</lng>
</end_location>
<polyline>
<points>euprBuvp{LdIj@XNhAxArA`ApHfCtDX`C@lA\r@n@fAvCf@f@j@LNR?XnC`@</points>
<levels>B???????@??????B</levels>
</polyline>
<duration>
<value>97</value>
<text>2 mins</text>
</duration>
<html_instructions>Continue onto <b>Shahid Bhagat Singh Rd/Shahid Bhagat SIngh Marg</b> <div style="font-size:0.9em">Go through 1 roundabout</div><div style="font-size:0.9em">Pass by Town Hall (on the left)</div></html_instructions>
<distance>
<value>1022</value>
<text>1.0 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>18.9243200</lat>
<lng>72.8320700</lng>
</start_location>
<end_location>
<lat>18.9230100</lat>
<lng>72.8334800</lng>
</end_location>
<polyline>
<points>_dorBm_p{LvFmERa@Ei@</points>
<levels>B??B</levels>
</polyline>
<duration>
<value>30</value>
<text>1 min</text>
</duration>
<html_instructions>Turn <b>left</b> at CBI onto <b>Mahakavi Bhushan Rd/Rajkavi Ghushan Marg</b> <div style="font-size:0.9em">Pass by Kalajot Hospital (on the right)</div></html_instructions>
<distance>
<value>220</value>
<text>0.2 km</text>
</distance>
</step>
<step>
<travel_mode>DRIVING</travel_mode>
<start_location>
<lat>18.9230100</lat>
<lng>72.8334800</lng>
</start_location>
<end_location>
<lat>18.9219500</lat>
<lng>72.8335500</lng>
</end_location>
<polyline>
<points>y{nrBghp{LdA_@t@KvA\</points>
<levels>B??B</levels>
</polyline>
<duration>
<value>46</value>
<text>1 min</text>
</duration>
<html_instructions>Turn <b>right</b> at Mumbai Hotels Booking onto <b>Appolo Bunder/P J Ramchandani Marg</b> <div style="font-size:0.9em">Destination will be on the right</div></html_instructions>
<distance>
<value>124</value>
<text>0.1 km</text>
</distance>
</step>
<duration>
<value>1933</value>
<text>32 mins</text>
</duration>
<distance>
<value>25826</value>
<text>25.8 km</text>
</distance>
<start_location>
<lat>19.0966100</lat>
<lng>72.8656200</lng>
</start_location>
<end_location>
<lat>18.9219500</lat>
<lng>72.8335500</lng>
</end_location>
<start_address>Chhatrapati Shivaji International Airport, Vile Parle East, Mumbai, Maharashtra, India</start_address>
<end_address>Taj Mahal Palace & Tower, P J Ramchandani Marg, Apollo Bandar, Mumbai, Maharashtra 400001, India</end_address>
</leg>
<overview_polyline>
<points>yxpsBcqv{LuAd@aEf@eBl@a^lQqDpBiS`PgAnAeArCoA`JiAbKpHr@nAChEk@|BAbTqCfCQl@@dAHhE`AbJhCxQvEfDdBzBjB~@hAvBnEr@rCbCdS`@vBh@xA|@pAvBhB`Af@`Ch@bBHnAExCk@nAm@l@e@nGuF~Ay@fDaAlXcDxx@f@~UBbPPvVF|HLhWClDX|Bh@fDdBz@x@l@z@~@rBz@nDfGfSfBjBj@ZxB^h@XZfAN~Ab@b@l@VnJErAYnA[vEgBPObJoDXAxCcAfLsEzDiAdB]vGw@jIM~DFzPr@lb@pFbBXrA`@vEeB~@gAlB}CXSx@SfDC^c@tAm@XB^QpHeNbHoLUa@Fs@RSv@DvZ{j@zB`AdDr@jMv@rHVhRN`Zj@vMjB`DRnFt@vJnChCfBjAhArNjQtYjb@dAn@pCr@`ZsEp[aEvJ}AzPwBzBa@nBI`E@zFz@~Ad@^TxCf@rBh@`Bf@nCpAnAFpAEfBSr@Y^?dk@nIdm@rJbEb@b\bFnWhEjOxBvI|A`CDbDf@^RtC`DbAf@dIj@XNhAxAzBxAhGnBtDX`C@lA\r@n@fAvCf@f@j@LNR?XnC`@vFmERa@Ei@dA_@t@KvA\</points>
<levels>B???@?@???A??????@???@???@???@???A??@????@@?????@???@???@???????@?@?????????@??@??A???@?????@??????A??@??@???@?????@??????@??????@????@????????@??????@???@?????@??????B</levels>
</overview_polyline>
</route>
</DirectionsResponse>
包含整个旅程详细信息的元素是:
DirectionsResponse > 路线 > 距离 > 值
整个旅程的距离(以基本单位表示)
DirectionsResponse > 路线 > 距离 > 文字
完整旅程的距离(以简单的英语形式表示)
DirectionsResponse > 路线 > 持续时间 > 值
整个行程的预计行程时间(以基本单位(秒)表示)
DirectionsResponse > 路线 > 持续时间 > 文字
整个旅程的预计旅行时间(以简单的英语形式表示)
然后您可以使用PHP DOMDocument CLASS解析结果并提取这些详细信息。
注意:在 Google Directions API 页面中,“使用 Google Directions API 需遵守查询每天 2,500 个路线请求的限制。各个路线请求中最多可以包含 8 个中间路径点。Google map 专业版客户每天最多可以查询 100,000 个路线请求,每个请求中最多允许 23 个路径点。” p>
关于java - 使用谷歌地图获取到最近地标(购物中心、医院和机场等)的距离,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/2752713/
我在 kml 中创建了一个名称和 ID = 'campania' 的地标 我使用 google.earth.fetchKml(ge, href, function()) 方法上传了它 我在 map 上
我需要检测翼蜂的静脉连接(图片只是一个例子)。我使用 opencv - python。 ps:可能图片画质差了点,但是图片都是一个像素宽连在一起的。 最佳答案 这是一个有趣的问题。我得到的结果并不完美
我正在开发一款 Google map 应用,目标用户可能需要关于特定位置的路线,这些位置只能通过应用中的经纬度获知。 问题是方向需要解析为人类可读的名称,最好是任何位置都可以相对于另一个附近的位置进行
我正在使用uitableview。当我选择一个单元格时,我试图保存地标。从下面的代码中,我添加了一个表格 View ,当我选择一个单元格时,将显示地标。但我在保存它时遇到了麻烦,因为当我转到另一个 V
我可以找到很多关于如何将 KML 多边形转换为 SVG 对象的文档,但找不到相反的文档。是否存在这样的脚本,或者有人知道如何编写脚本吗? 基本上我想拿一些GPL SVG maps from wikim
我在其他应用程序(例如 ios 6 星巴克)上看到它,当我的 map View 打开时,我希望它显示整个英国/不列颠群岛的区域,然后我希望它放大到我指定的位置区域点我有. 更新代码: - (void)
我在 kml 文件中创建的地标信息 在 iPad 上不显示。窗口打开,但没有内容。它 过去一直有效,并且在 Windows 版 Google 地球中运行良好 和安卓。我感觉这可能是 Google 的问
我正在尝试从 Apple 的电影应用程序复制 Landmark Accessibility 的流程。我尝试使用带有自定义标题的 TableView 和标准标题 View ,其中我的单元格内部有一个 C
我使用 GGeoXml 对象在嵌入式 Google map 上叠加了一个 KML 文件。我希望能够从 Javascript 访问 KML 文件中的特定地标(例如,在 map 上突出显示选定的多边形以响
我正在寻找一种方法来生成复杂的地标(或“附加”到地标的叠加层)。 有没有办法(我还没有找到)使用 Map v3 api 来附加/覆盖地标? 或者,我是否需要在 Google API 之外进行绘制,然后
我正在使用 Java API for KML、JAK 来构建 KML 文件。我希望能够使用其 ID 来删除某个功能,但我还没有找到如何执行此操作的好示例。理想情况下,代码为“myFolder.dele
我是一名优秀的程序员,十分优秀!