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Finding the centroid of a polygon?

开发者_如何学运维To get the center, I have tried, for each vertex, to add to the total, divide by the number of vertices.[详细]

2022-12-30 02:15 分类：问答
Android App Widget: Data storage

I\'m implementing a home screen app widget. I was wondering which is better开发者_高级运维 to store/read data: SharedPreferences or a SQLite database? The data is accessed from an AppWidgetProvider (s[详细]

2022-12-30 02:15 分类：问答
Load resources? - wxPython / Python

I am using wxPython and Py2exe to create my application and my only problem is loading for example bitmaps.[详细]

2022-12-30 02:15 分类：问答
加雪种多少钱啊？？

demver101 开发者_开发百科2022-03-07 01:03 至2020年6月，价格为150-200元。R32是二氟甲烷的简称，是一种拥有零臭氧损耗潜势的冷却剂，在常温下为气体，在自身压力下为无色透明液体，易溶于油，难溶于水。[详细]

2022-12-30 02:14 分类：问答
R plot- SGAM plot counts vs. time - how do I get dates on the x-axis?

I\'d like to plot this vs. time, with the actual dates (years actually, 1997,1998...2010).The dates are in a raw format, ala SAS, days since 1960 (hence as.date conversion).If I convert the dates usin[详细]

2022-12-30 02:14 分类：问答
快手打广告多少钱啊？找个快手红人打广告，一般要多少钱？

纳兰雅风8899 开发者_开发问答2022-03-07 07:25 看点赞量播放量，还有主播人品，我之前找过一个8.7w粉丝的主播不收钱，不过播放量跟点赞量不是很好，然后又找了个8.8w的主播收200，点赞量播放量很高[详细]

2022-12-30 02:14 分类：问答
Meaning of the "Unloading class" messages

Anyone can explain why the lines below appear in the output console at runtime ? (one possible answer would be full permGen, but this can be ruled out since the program only uses 24MB out of the max1[详细]

2022-12-30 02:13 分类：问答
《朱陈村》第四十七句是什么？

走在迷茫里 2022-03-07 12:02 《朱陈村》第四十七句是：“承家与事国”，这是出自于唐朝白居易所著的《朱陈村》。附《朱陈村》全文赏析朱陈村作者：白居易朝代：唐朝徐州古丰县，[详细]

2022-12-30 02:13 分类：问答
去厦门、鼓浪屿的自助旅游详细攻略？

乐态思 2022-03-07 14:32 很多人都喜欢节假日外出游玩，下面就来介绍一下厦门鼓浪屿游玩攻略。开发者_Python百科操作方法01鼓浪屿位于厦门市思明区轮渡码头，是厦门的著名景点，外地游客乘船上岛船票35一张，岛[详细]

2022-12-30 02:13 分类：问答
jquery dynamic adding hidden field

$().ready(function() 开发者_开发百科{ $(\"#add\").click(function() { var vals = $(\"#txtaddfeature\").val();[详细]

2022-12-30 02:13 分类：问答