chart | 易学教程

Kubernetes筆記（三十三）-- Helm Hooks用法

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Helm Hooks 和 Kubernetes 里面的容器一样，Helm 也提供了 Hook 的机制，允许 chart 开发人员在 release 的生命周期中的某些节点来进行干预，比如我们可以利用 Hooks 来做下面的这些事情：在加载任何其他 chart 之前，在安装过程中加载 ConfigMap 或 Secret 在安装新 chart 之前执行作业以备份数据库，然后在升级后执行第二个作业以恢复数据在删除 release 之前运行作业，以便在删除 release 之前优雅地停止服务值得注意的是 Hooks 和普通模板一样工作，但是它们具有特殊的注释，可以使 Helm 以不同的方式使用它们。 Hook 在资源清单中的 metadata 部分用 annotations 的方式进行声明： apiVersion: ... kind: .... metadata: annotations: "helm.sh/hook": "pre-install" # ... 接下来我们就来和大家介绍下 Helm Hooks 的一些基本使用方法。 Hooks 在 Helm 中定义了如下一些可供我们使用的 Hooks：预安装pre-install：在模板渲染后，kubernetes 创建任何资源之前执行安装后post-install：在所有 kubernetes 资源安装到集群后执行

Python openpyxl Excel绘制柱形图

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这是一份 openpyxl 的使用指南。大体内容翻译自官网 https://openpyxl.readthedocs.io/en/stable/charts/bar.html#vertical-horizontal-and-stacked-bar-charts 本文在官网基础上会有一些改动。代码请参考 https://github.com/RustFisher/python-playground 本文链接 https://rustfisher.com/2019/11/14/Python/Python-openpyxl_charts_Bar_and_Column/ 柱形图数据会被绘制成垂直，水平或者是层叠效果的柱形图。注意：接下来的设置会影响到不同类型的图表。设置类别可以控制柱形图是垂直或是水平。使用层叠图形时，需要设置overlap成100。如果柱形是水平的，x和y坐标会对调过来。 2D图表示例代码如下，根据给定的数据绘制了4张图表。 from openpyxl import Workbook from openpyxl.chart import BarChart, Series, Reference def bar_chart_demo(): wb = Workbook(write_only=True) ws = wb.create_sheet() rows =

使用open flash chart制作报表

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http://sarin.iteye.com/blog/685354 这篇文章对open flash chart与struts2的整合使用做了详细的介绍，但是按照文章里面的内容进行实际操作的时候，却报了open flash char io error Loading test data Error #2032 的错，经过分析，原因我忘记了引入jofc2其所依赖的xstream包 ......在这里，需要注意的是这两个JAR包版本号的问题，我使用的是jofc2-1.0-0.jar和xstream-1.3.1.jar。项目按照Struts2的开发标准搭建，然后把OFC开发所需的flash文件，页面显示Flash的支持文件swfobject.js放到发布目录的相应位置，再将jofc2和其依赖的xstream的jar包放到WEB-INF/lib下并加入编译路径即可。需求还是按照那篇博客文章中写的那样：记录系统访问用户所使用的浏览器并用图表显示。那么需要在数据库中记录这样的信息，如图所示： 1---- 首先是Action的定义，代码如下： import java.util.ArrayList; import java.util.List; import com.opensymphony.xwork2.ActionSupport; import jofc2.model.Chart;

jfreechart & itext for adding many number of barcharts

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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: hello can any one help me in adding many number of bar charts to a single pdf. i have a code taken from d website to create a bar chart and save it in pdf. but couldn't save multiple bar charts to a single pdf. import com.itextpdf.awt.DefaultFontMapper; import com.itextpdf.text.Document; import com.itextpdf.text.pdf.PdfContentByte; import com.itextpdf.text.pdf.PdfTemplate; import com.itextpdf.text.pdf.PdfWriter; import java.awt.Graphics2D; import java.awt.geom.Rectangle2D; import java.io.FileOutputStream; import org.jfree.chart.ChartFactory;

How to remove space betwwen bars on a category in iReport?

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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a graph with two bars on each category value. How can we remove sapce beween bar on a category value. Space between bar of of with different category value should not be removed. 回答1: I worked on this case using java customizer as follow: public class BarChartCustomizerExIm implements JRChartCustomizer{ @Override public void customize(JFreeChart chart, JRChart jasperChart) { BarRenderer barRenderer = (BarRenderer)plot.getRenderer(); barRenderer.setItemMargin(0); } } Put jar for this class in your class path and in customizer field in

How can I show JSON data in Chart.js with Javascript if static values are working but dynamic from mySQL are not?

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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have JSON data in the following form: { "labels": ["12.11.2016", "13.11.2016", "14.11.2016", ...], "temperature": ["12", "35", "27", ...], "humidity": ["56", "70", "87", ...] } and want to show it in Chart.js. I already found this example but it somehow isn't working... My code for Chart.js is the following: <!doctype html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

Update and refresh wpf chart

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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm working with chart of wpf toolkit, and I can't view the inserted data of the chart... Here is the xaml part: <chartingToolkit:Chart Height="352" HorizontalAlignment="Left" Name="profilo_cale_chart" Title="Profili cale" VerticalAlignment="Bottom" Width="655" FontSize="16" Margin="252,0,0,55" Visibility="Hidden"> <chartingToolkit:AreaSeries DependentValuePath="Value" IndependentValuePath="Key" IsSelectionEnabled="True" ItemsSource="{Binding}" Foreground="#FF242424" Background="LightSteelBlue" /> </chartingToolkit:Chart> And the cs:

Excel Timesheet

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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have some data in the following format: Salary Code InTime 1690 09:03:00 1690 09:13:00 1690 09:07:00 1691 08:48:00 1691 08:52:00 1691 08:50:00 1691 08:54:00 1691 08:46:00 1691 09:28:00 1691 08:59:00 1691 08:53:00 1691 09:02:00 1693 08:57:00 1693 09:01:00 1693 08:54:00 1693 09:22:00 1693 09:16:00 1693 08:58:00 1693 09:03:00 1693 09:01:00 1693 09:02:00 1693 09:44:00 1885 09:28:00 1885 09:04:00 1885 09:20:00 1885 08:57:00 and so it goes for about 2000 lines I need to plot a line graph , that plots the intime for each salary code as a trend,

Interactivity with the d3 reusable pattern

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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: In D3: I'm trying to implement a chart using the reusable charts pattern which allows me to add events which are handled outside the actual chart. For instance I have a simple barchart where I can click on each individual bar. Now instead of just handling the click event inside the chart component I want to be able to handle it from where I create a chart instance. For example I want to edit the data which corresponds to the clicked bar element or I want to update the position of some other element depending on the position of the bar I

amCharts: Always show 0 on value axis and enable negative velues to be displayed

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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have got this silly problem. I am creating a simple serial chart, displaying columns for two simple data series. The values are quite clse to eachother so amCharts decides to hide the 0 value axis and dislay only the relevant data. This is all good, but the thing is that I need to be able compare my columns visually. I also want to hide the labels on the value axis at some point. Generally what I get now is this: As you can see, value axis starts counting from 22.5. I need it to always start counting from 0, so I can compare the columns

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