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i want to use graphviz ,but error 'syntax error in line 1 near '{''

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问题 i use macOS already $ brew install graphviz so, i can use dot -V ⇨ dot - graphviz version 2.40.1 (20161225.0304) i made [test.dot] file on Desktop,and dot -T png -O test.dot but , Error: test.dot: syntax error in line 1 near '{' occured please help test.dot digraph d { A [label="Hello"] B [label="World"] C [label="Everyone"] A -> { B C } } As a matter of concern, opening a file opens in a word 回答1: It may be due to line endings or BOM markers. I get $ cat PruneGraph.dot | dot.exe Error:

Doxygen dot. Draw link between classes by annotation

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问题 Doxygen can generate class diagrams with graphiz. For example: class A {...}; class B extends A {...}; From this code I can generate a picture where doxygen can show that one class it the parent of an other. But is there a way to generate a picture from code with manual references between classes? For example when I describe DB scheme and use contract classes (http://developer.android.com/training/basics/data-storage/databases.html#DefineContract) I want to perform smth like this: class

Dot: How to decorate graph nodes with black outline while filled with another color?

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问题 I need help with formatting a dot graph. To simplify my question, I have a dot code here which I run through a dot tool: digraph G { TestNode [label="Test Node", shape="egg" style="filled" color="yellow"] } results in this: I want to have a black outline to this node. How can I do that? 回答1: Using fillcolor together with color does achieve what you're after: TestNode [label="Test Node", shape="egg", style="filled", color="black", fillcolor="yellow"] From the documentation: Color used to fill

boost::read_graphviz - how to read out properties?

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问题 I am trying to read a graph from Graphviz DOT file. I am interested in two properties for Vertex - its id and peripheries. A also want to load graph labels. My code looks like this: struct DotVertex { std::string name; int peripheries; }; struct DotEdge { std::string label; }; typedef boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS, DotVertex, DotEdge> graph_t; graph_t graphviz; boost::dynamic_properties dp; dp.property("node_id", boost::get(&DotVertex::name, graphviz)); dp

Using symbol font / math notation in graphviz

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问题 [Environment: graphviz 2.38 / Windows 7] Using dot , I want to produce path diagrams like the following to represent a structural equation model (well, here, just a simple one-factor measurement model). I'd like to use Greek letters for some nodes and edges, and would actually prefer if I could use LaTeX-like notation in the dot file like \ksi , \lambda_1 or \delta_1 This diagram is supposed to represent the three equations \begin{eqnarray*} x_{1i} & = & \lambda_1 \xi_{i} + \delta_{1i} \\ x_

【数据分析】Numpy——numpy.dot() 函数

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【官网】https://docs.scipy.org/doc/numpy/reference/generated/numpy.dot.html numpy.dot(a, b, out=None) 一、dot()的使用 dot()返回的是两个数组的点积(dot product) 1.如果处理的是一维数组，则得到的是两数组的內积 import numpy as np a = np.arange(0,9) b = a[::-1] c = np.dot(a,b) print(a) print(b) print(c) 输出：[0 1 2 3 4 5 6 7 8] [8 7 6 5 4 3 2 1 0] 84 注：0*8 + 1*7 + 2*6 + 3*5 + 4*4 + 5*3 + 6*2 + 7*1 +8*0 = 0 + 7 + 12 + 15 + 16 +15 + 12 + 7*1 +8*0 = 84 2.如果是二维数组（矩阵）之间的运算，则得到的是矩阵积（mastrix product） import numpy as np a = np.arange(1,5).reshape(2,2) b = np.arange(5,9).reshape(2,2) c = np.dot(a,b) print("a:",a) print("b:",b) print("c:",c) 输出：a: [[1

edge-layout in graphviz for fixed node positions

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问题 I was trying to write my own little algorithm for graph layout that only creates a node layout but does not define edge routes. When I use Graphviz to turn the resulting dot file into a graph, the edges are straight lines that cross the nodes and even overlap each other. Is there a way to use Graphviz to layout the edges as nicely as the dot algorithm does, but have the nodes in predetermined fixed positions? You can see the effect for instance on the following graph: digraph test { "a" [pos=

How to avoid overlapping nodes in graphviz?

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问题 I am trying to draw a graph with many nodes and edges. However, the graph is becoming too clumsy, with nodes and edges overlapping. I tried (unsuccessfully), the following, all or combinations of these. size = "12.0, 20.0!"; margin = 0.0; len = 1.0; I am using neato to generate a png file. The size specification did not even seem to work. Any tips will be appreciated. 回答1: Try using sfdp or fdp from the same graphviz package. This tools have two parameters K and repulsiveforce which control

subscript in DOT/graphviz edge labels

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问题 How do you use Graphviz/DOT's HTML features to add a subscript character to an edge label? 回答1: Like this: digraph g { 1 -> 2 [label=<Regular<SUB>subscript</SUB>>]; } 来源： https://stackoverflow.com/questions/12386449/subscript-in-dot-graphviz-edge-labels

Graphviz .dot node ordering

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问题 I'm building a epsilon NFA to recognize a regular expression using the canonical construction. I'm using subgraphs to group various parts of the regular expression. The * operator is giving me particular trouble since dot has decided to move the order of the nodes around. I've tried adding edge weights to force particular edges to be short to keep the order of the edges in line but that does not seem to be working. What I would like to do is force the nodes in a subgraph in to be placed in a