diagram

问题 I thought I could differentiate between event and guard . But I came across an event being similar to guard: counter > 4 [pin is high] / switch on ^^^^^^^^^^^ event where I viewed the variable counter changes from some value smaller than 4 to that greater than 4 as event. Does that mean event can also be a condition like guard? 回答1: An event is the thing that triggers the transition. In your case counter > 4 is a change event, meaning " the counter value has changed and its value is now

问题 I thought I could differentiate between event and guard . But I came across an event being similar to guard: counter > 4 [pin is high] / switch on ^^^^^^^^^^^ event where I viewed the variable counter changes from some value smaller than 4 to that greater than 4 as event. Does that mean event can also be a condition like guard? 回答1: An event is the thing that triggers the transition. In your case counter > 4 is a change event, meaning " the counter value has changed and its value is now

问题 Currently trying to get to grips with SQL for the first time, so I am working through a few problems. Here is a sample database spec: Students (name, gender, course) do projects(title). Each project has two supervisors (name, gender, department). All students do a project but not all projects get taken. More than one student can do the same project. Students meet one of their supervisors regular and these meetings are recorded (date, time, student, supervisor, notes). So far I've got an ER

问题 I would like to create diagram class using pyreverse. I download it, and when I use this command: pyreverse.bat -c PyreverseCommand -a1 -s1 -f ALL -o png test.py I get an error "The name 'dot' is not recognized....". What is "dot", how can I create diagram class? Thanks for answers. 回答1: dot is part of Graphviz (http://www.graphviz.org/About.php). You need to install Graphviz and then modify your PATH so Windows (what I assume you are using) can find it. "the command pyreverse generates the

问题 I want to draw a Sankey diagram using Javascript. Can anyone provide some direction regarding the algorithms or libraries that are available for this? 回答1: This is a basic Sankey diagram using raphaeljs function Sankey(x0, y0, height, losses) { var initialcolor = Raphael.getColor(); var start = x0 + 200; var level = y0 + height; var heightunit = height / 100; var remaining = 100 * heightunit; function drawloss(start, level, loss) { var thecolor = Raphael.getColor(); paper.path("M" + (start -

问题 I want to draw a Sankey diagram using Javascript. Can anyone provide some direction regarding the algorithms or libraries that are available for this? 回答1: This is a basic Sankey diagram using raphaeljs function Sankey(x0, y0, height, losses) { var initialcolor = Raphael.getColor(); var start = x0 + 200; var level = y0 + height; var heightunit = height / 100; var remaining = 100 * heightunit; function drawloss(start, level, loss) { var thecolor = Raphael.getColor(); paper.path("M" + (start -

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . Given a file tree - a directory with directories in it etc, how would you write a script to create a diagram of the file-tree as a graphic file that I can embed in a word processor document. I prefer vector (SVG, EPS, EMF...) files. The tool must run on Windows, but preferably cross-platform. The tool may be

问题 I have the following use case diagram What is the best way to create a class from this diagram? I've tried creating two main classes ( UserManager and ContentManager ) but the whole class structure looks wrong and illogical. Can anyone provide a simple example to help me? [Edit] Below I've pasted my class diagram. What would you change or what do you think about it? 回答1: A Class represents a set of things from the problem domain, not an arbitrary bucket of code. For example, you should have

问题 I have a question regarding d3 network diagram. Say I have a simple, one like here in my jsFiddle enter link description here , diagram.And Id like to have a function, for example that deletes the middle circle and connects the first and the third one. Could someone please assist me on this ? [['L1', 'L2'], ['L2', 'L3']] Probably its not gonna be 'hard delete', but hiding or not showing ? Because also Id like to know a way how could i bring that middle, deleted circle back and the original

问题 I have these uml diagrams. They are diagrams of a game called Tictactoe. Just a simple tictactoe with scoring. So i would like you to check or give an opinion of my diagrams if it is correct or needs improvements. here are the diagrams: Acitivity diagram Class diagram Usecase diagram Statechart diagram 回答1: Simple answer: the diagrams are incorrect. Without even looking at the problem-domain aspects of the diagrams, there are glaring problems. 1) Your activity diagram cannot possibly work.