offset

Excel - transpose pairs of columns

由 守給你的承諾、 提交于 2019-12-11 12:36:15
问题 I'm attempting to transpose - if that's the right application of the term - pairs of columns into repeating rows. In concrete terms, I need to go from this: Thing1 6 0.29 5 0.23 7 0.19 8 0.11 to this: Thing1 6 0.29 Thing1 5 0.23 Thing1 7 0.19 Thing1 8 0.11 This operation will occur with at least 7 pairs of columns for several hundred "things." The part I can't figure out is how to group/lock the pairs to be treated as one unit. In some ways, I'm trying to do the opposite of what is normally

广播消费模式的消费者OFFSET_MOVED_EVENT预警问题调查

由 大城市里の小女人 提交于 2019-12-11 12:19:43
一、现象 mqcloud持续发送topic为digg-topic的消费者digg-group发生偏移量错误的预警邮件，详细预警如下： 即：digg-group请求从偏移量 156798 开始消费，但是broker上最小的消息偏移量是 172289 ，也就是说， 消费者想请求消费的消息，在broker上已经不存在了。 解释：rocketmq会将此种情况当做一个事件消息发送到内置的topic：OFFSET_MOVED_EVENT中，mqcloud会订阅并消费该topic，并会以固定频率进行预警。 二、mqcloud监控情况 顺着预警邮件的链接，到mqcloud里看下消费者的具体情况，发现digg-group消费有堆积，详细如下： 点开查看每个客户端的消费情况，定位到某个机器消费有堆积： 三、broker表现 找到对应的broker的某个实例，查看broker.log日志，发现很多类似如下的日志： 2019-01-18 19:24:01 INFO PullMessageThread_49 - the request offset too small. group=digg-group, topic=digg-topic, requestOffset=156798, brokerMinOffset=172289, clientIp=/10.*.*.*:54437 2019-01-18 19

MySQL ISO 8601 Date with Timezone offset instead of Z value

由 拜拜、爱过 提交于 2019-12-11 12:07:48
问题 I need to SELECT a ISO 8601 Date. DATE_FORMAT(date, '%Y-%m-%dT%TZ') This produces something like 2013-11-13T15:47:530Z But I need it with the offset instead of Z value: 2013-11-13T15:47:53+02:00 How can I do this with plain MySQL ? 回答1: You need to store the timezone as an extra column in DB. I do not know any DB that stores datetime with timezone/offset. Or store the date as string in ISO 8601 format with offset.. Edit: I stand somewhat corrected, with some newer databases it is possible!

gazebo机器人文件

由 痴心易碎 提交于 2019-12-11 11:55:26
机器人模型,有GPS和lidar. < ? xml version="1.0" ? > <robot name="arm" xmlns : xacro="http : //www.ros.org/wiki/xacro" > <xacro : include filename="$(find mbot_description)/urdf/xacro/gazebo/mbot_base_gazebo.xacro" / > <xacro : include filename="$(find mbot_description)/urdf/xacro/sensors/lidar_gazebo.xacro" / > <xacro : include filename="$(find mbot_description)/urdf/xacro/sensors/gps_gazebo.xacro" / > <xacro : property name="lidar_offset_x" value="0.15" / > <xacro : property name="lidar_offset_y" value="0" / > <xacro : property name="lidar_offset_z" value="0.105" / > < !-- lidar - - > <joint name=

Ruby find in array with offset

由 穿精又带淫゛_ 提交于 2019-12-11 07:56:22
问题 I'm looking for a way to do the following in Ruby in a cleaner way: class Array def find_index_with_offset(offset, &block) [offset..-1].find &block end end offset = array.find_index {|element| element.meets_some_criterion?} the_object_I_want = array.find_index_with_offset(offset+1) {|element| element.meets_another_criterion?} So I'm searching a Ruby array for the index of some object and then I do a follow-up search to find the first object that matches some other criterion and has a higher

How to ignore offset in jekyll when previous post is skipped

由 雨燕双飞 提交于 2019-12-11 07:05:20
问题 i'm trying to create my first blog on jekyll. And i stucked in one stupid thing. so the theme is next: i have a section for one of my categories, let it be "news": <section class="news"> <div class="container"> <div class="row no-gutters"> {% for post in site.categories.news limit: 2 offset: 0 %} {% include news-item-col-6.html %} {% endfor %} {% for post in site.categories.news limit: 3 **offset: 2** %} {% include news-item-col-4.html %} {% endfor %} </div> </div> </section> news-item-col-6:

震惊了！原来这才是kafka！

由 北城以北 提交于 2019-12-11 06:49:57
简介 kafka是一个分布式消息队列。具有高性能、持久化、多副本备份、横向扩展能力。生产者往队列里写消息，消费者从队列里取消息进行业务逻辑。一般在架构设计中起到解耦、削峰、异步处理的作用。 kafka对外使用topic的概念，生产者往topic里写消息，消费者从读消息。为了做到水平扩展，一个topic实际是由多个partition组成的，遇到瓶颈时，可以通过增加partition的数量来进行横向扩容。单个parition内是保证消息有序。 每新写一条消息，kafka就是在对应的文件append写，所以性能非常高。 kafka的总体数据流是这样的： kafka data flow 大概用法就是，Producers往Brokers里面的指定Topic中写消息，Consumers从Brokers里面拉去指定Topic的消息，然后进行业务处理。 图中有两个topic，topic 0有两个partition，topic 1有一个partition，三副本备份。可以看到consumer gourp 1中的consumer 2没有分到partition处理，这是有可能出现的，下面会讲到。 关于broker、topics、partitions的一些元信息用zk来存，监控和路由啥的也都会用到zk。 生产 基本流程是这样的： kafka sdk product flow.png 创建一条记录

How to pull missile images on top of the lines?

由 守給你的承諾、 提交于 2019-12-11 06:35:16
问题 As you can see below, the images of the little missiles are not over the lines. How can I create an offset that respects the angle and rotation. I am using linear interpolation to extract x y coordinates between the ends of each straight line. float xDiff = end_xpos[i] - start_xpos[i]; float yDiff = end_ypos[i] - start_ypos[i]; double degrees = Math.Atan2(yDiff, xDiff) * 180.0 / Math.PI; double radians = (Math.PI / 180) * degrees; args.DrawingSession.DrawLine(start_xpos[i], start_ypos[i], end

dragging objects in processing

由 徘徊边缘 提交于 2019-12-11 06:34:22
问题 I am having an issue implementing Daniel Shiffman's awesome dragging example into my sketch. I have used it before and it is great, however I am attempting to use it with some "fancy" for looping to apply it to multiple objects(in this case text) but to no avail. Everything works correctly except for the objects don't drag when they should. Logically, this makes since because the offsetX and offsetY properties in the Line class continue to update thus forcing the object to remain stationary.

jquery inconsistent positioning using offset().top

由 巧了我就是萌 提交于 2019-12-11 05:56:00
问题 I am simply trying to position #elementA relative to #elementB. Half the time it ends up with one top value, half the time it gets another, and I can't figure out why. #elementA begins with this CSS: #elementA { display: block; opacity: 0; position: absolute; clear: both; margin-left: -49px; } Then, on $(document).ready(), I set the top value and fade it in. var p = $('#elementB').offset(); $('#elementA').css({ top: p.top - 2 }); $('#elementA').animate({opacity: 1}, 400); Why am I getting
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