# diagram

问题 my project's aim is to generate a network diagram, I've made a program that creates objects as swicth and nodes in python then it generates a gexf file and my question is : Can everybody tell me if he knows a way that allow us to choose a node image by using gexf, networkx or other tools. Thank you so much 回答1: NetworkX supports adding any form of data as attributes for a node such as an image: G=nx.Graph() G.add_edge(0,1, image=my_img) Essentially everything is stored as a dictionary

## UML Class Diagram - Modelling with Enumeration

问题 In a UML class diagram, how would I model a tutor can work multiple days of the week without knowing specifically? In my current solution: 1 or more tutors work on 1 or more days of the week . 回答1: Since the list of days when Tutor work is only an attribute and doesn't seem to have any specific structure to build a class around it, it should rather be an inline attribute with type DaysOfTheWeek and multiplicity 1..7 . Also since you can't work twice at the same day you should add unique

## Plotly: How to remove the empty gap on x-axis

问题 I have done this diagram on plotly And I want to delete the empty gap, to display only the x that have a value, and to hide the x where there isn't any value How am I supposed to do that ? Here is my code : go.Bar(name=i,x=listeDepartement,y=listePPA)) fig = go.Figure(data=bar) fig.update_layout(barmode='stack') fig.write_html('histogram.html',auto_open=True) fig.show() 回答1: The reason why this happens is that plotly interprets your x-axis as dates, and makes a timeline for you. You can avoid

## Produce a graphic tree diagram showing the structure of an R object

问题 In R, str() is handy for showing the structure of an object, such as the list of lists returned by lm() and other modelling functions, but it gives way too much output. I'm looking for some tool to create a simple tree diagram showing only the names of the list elements and their structure. e.g., for this example, data(Prestige, package="car") out <- lm(prestige ~ income+education+women, data=Prestige) str(out, max.level=2) #> List of 12 #> $ coefficients : Named num [1:4] -6.79433 0.00131 4

## Generate bifurcation diagram for 2D system

问题 Drawing bifurcation diagram for 1D system is clear but if I have 2D system on the following form dx/dt=f(x,y,r), dy/dt=g(x,y,r) And I want to generate a bifurcation diagram in MATLAB for x versus r. What is the main idea to do that or any hints which could help me? 回答1: You first have to do some math: Setting each of the functions to zero gives you two functions y(x) (called the nullclines), which you can plot in a phase diagram. Where the two lines intersect are the fixed-points (equilibria)

## Drawing simple mediation diagram in R

问题 Is there a (preferably easy and straightforward) way to draw simple path diagrams with mediation coefficients in R? I've been looking to DiagrammeR package but that looks like an overkill (and to be honest I failed to figure out how to make a plot). Other options I know of are Dia or Inkscape but those require manual positioning, connecting paths etc. mediation package has a plot option but that draws bootstrapped CIs and what I'd like to achieve is a simple path with coefficients like this

## Is it possible to draw diagrams in R?

问题 I was wondering if there is any package in R that could use x, y coordinates and shape sizes to draw something like this: I have the coordinates of vehicles' front centers and their sizes (length and width). Edit This is what the original data set looks like: > head(df) Vehicle.ID Frame.ID Global.X Global.Y Vehicle.Length Vehicle.width Lane Preceding.Vehicle.ID Following.Vehicle.ID Spacing Headway 1 2 43 6451214 1873261 14.5 4.9 2 0 13 0 0 2 2 44 6451217 1873258 14.5 4.9 2 0 13 0 0 3 2 45