A Activity diagram used in UML 6/9 and SysML B Bachman diagram Booch used in software engineering Block diagram Block Definition Diagram BDD used in SysML C Carroll diagram Cartogram Catalytic cycle Chemical equation Curly arrow diagram Category theory diagrams Cause-and-effect diagram Chord diagram Circuit diagram Class diagram from UML 1/9 Collaboration diagram from UML 2.0 Communication diagram from UML 2.0 Commutative diagram Comparison diagram Component diagram from UML 3/9 Composite structure diagram from UML 2.0 Concept map Constellation diagram Context diagram Control flow diagram Contour diagram Cordier diagram Cross functional flowchart D Data model diagram Data flow diagram Data structure diagram Dendrogram Dependency diagram Deployment diagram from UML 9/9 Dot and cross diagram Double bubble map used in education Drakon-chart E Entity-Relationship diagram ERD Event-driven process chain Euler diagram Eye diagram a diagram of a received telecommunications signal Express-G Extended Functional Flow Block Diagram EFFBD F Family tree Feynman diagram Flow chart Flow process chart Flow diagram Fusion diagram Free body diagram G Gantt chart shows the timing of tasks or activities used in project management Grotrian diagram Goodman diagram shows the fatigue data example: for a wind turbine blades H Hasse diagram HIPO diagram I Internal Block Diagram IBD used in SysML IDEF0 IDEF1 entity relations Interaction overview diagram from UML Ishikawa diagram J Jackson diagram K Karnaugh map Kinematic diagram L Ladder diagram Line of balance Link grammar diagram M Martin ERD Message Sequence Chart Mind map used for learning, brainstorming, memory, visual thinking and problem solving Minkowski spacetime diagram Molecular orbital diagram N N2 Nassi Shneiderman diagram or structogram a representation for structured programming Nomogram Network diagram O Object diagram from UML 2/9 Organigram Onion diagram also known as "stacked Venn diagram" P Package diagram from UML 4/9 and SysML Parametric diagram from SysML PERT Petri net shows the structure of a distributed system as a directed bipartite graph with annotations Phylogenetic tree - represents a phylogeny evolutionary relationships among groups of organisms Piping and instrumentation diagram P&ID Phase diagram used to present solid/liquid/gas information Plant Diagram Pressure volume diagram used to analyse engines Pourbaix diagram Process flow diagram or PFD used in chemical engineering Program structure diagram R Radar chart Radial Diagram Requirement Diagram Used in SysML Rich Picture R-diagram Routing diagram S Sankey diagram represents material, energy or cost flows with quantity proportional arrows in a process network. Sentence diagram represents the grammatical structure of a natural language sentence. Sequence diagram from UML 8/9 and SysML SDL/GR diagram Specification and Description Language. SDL is a formal language used in computer science. Smith chart Spider chart Spray diagram SSADM Structured Systems Analysis and Design Methodology used in software engineering Star chart/Celestial sphere State diagram are used for state machines in software engineering from UML 7/9 Swim lane Syntax diagram used in software engineering to represent a context-free grammar Systems Biology Graphical Notation a graphical notation used in diagrams of biochemical and cellular processes studied in Systems biology System context diagram System structure Systematic layout planning T Timing Diagram: Digital Timing Diagram Timing Diagram: UML 2.0 TQM Diagram Treemap U UML diagram Unified Modeling Language used in software engineering Use case diagram from UML 5/9 and SysML V Value Stream Mapping Venn diagram Voronoi diagram W Warnier-Orr Williot diagram Y Yourdon-Coad see Edward Yourdon, used in software engineering
在前端开发过程中有时候需要图片、svg、ico等转成base64直接在css中使用，可以提高加载速度。 将图片转换成base64编码，在web网上一般用于小图片上，不仅可以减少图片的请求数量（集合到js、css代码中），还可以防止因为一些相对路径等问题导致图片404错误。 转换步骤： 1）选择需要转换的图片 ...
一些答案其实已经说到了，但是可以更明确一点。 Base64编码是从二进制值到某些特定字符的编码，这些特定字符一共64个，所以称作Base64。 为什么不直接传输二进制呢？比如图片，或者字符，既然实际传输时它们都是二进制字节流。而且即使Base64编码过的字符串最终也是二进制（通常是UTF 8编码 ...
md插入的不是图片，而是图片路径，然后它自动按照路径给你显示出图片，你的图片在你自己的电脑上，发给别人自然看不到。所以一般就是搞个 图床，把图片上传上去，然后把图片链接插入你的md中，这样发给别人，只要有网就能显示。比如阿里云， 华为云 应该都有图床服务，很便宜，几十块钱 ...
其实是有的 我们可以把base64图片放在js里，使用异步加载js的办法尽可能减少首屏时间 同时因为js可以被CDN缓存，也不会增加回源流量 之所以使用base64，优势在于可以发起更少的 下载请求，在文件较小的情况下可以通过减少握手延迟而加快加载速度
注意： smart 对于中文内容很重要， 否则默认开启的智能引号会把（全角 [1]）引号全部处理为 ASCII 引号。 extract media=. 会在当前目录创建 media 文件夹并把图片复制进去；需要放在其他目录时把 . 相应地替换即可。 参考 ^ 虽然这算是伪概念。
3 6 运行以后就可以看到图片转成base64了，如下图所示 4 6 我们如果更改图片的格式，如下图所示 5 6 然后在转化的时候前面的base64格式不用改，直接修改文件的后缀即可，如下图所示 6 6
mysql应该是不支持图片转换base64的 可以通过你擅长的编程语言编写转换程序，基本流程如下： 1.读取图片 2.图片转base64字符串 3.转换后的字符串存入数据库 不过需要注意存储类型长度问题： TEXT：65,535 bytes ~64kb MEDIUMTEXT：16,777,215 bytes ~16Mb LONGTEXT：4,294,967,295 bytes ~4Gb
Unity 图片教程之 图片互转byte\Base64简单实现。本节介绍，在Unity开发中，如何实现图片转为 byte数组，以及Base64 格式，以及他们之间的相互转换，具体如下
使用canvas的drawImage方法将image对象draw到canvas画布上时，图片大小会显著增加，并且只能保存为PNG格式。 将canvas用 toDataUrl 转化为base64，即使encoderOptions设置为1，图片也会有较大幅度的减小，但是比起最初的image还是要大。 如果encoderOptions使用默认的0.92，最终的图片大小和初始的是相差不多的
但是，如果截图的区域有本地图片的话，就需要先把本地图片转化为base64位的图片，否则会截出空白的页面。在插件市场中，引入image tools插件，转化本地图片。
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