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Graphs and Networks Wolfram Language

Difference between these codes plotting a TreeGraph?

Huadun Wang

Posted 8 years ago

Consider the following code: TreeGraph[{Labeled[1, "Color?"], Labeled[2, "Size?"], Labeled[3, "Shape?"], Labeled[4, "Size?"], Labeled[5, "Watermelon"], Labeled[6, "Apple"], Labeled[7, "Grape"], Labeled[8, "\!\(\* StyleBox[\"Size\",\nFontWeight->\"Bold\"]\)\!\(\* StyleBox[\"?\",\nFontWeight->\"Plain\"]\)"], Labeled[9, "Banana"], Labeled[10, "Apple"], Labeled[11, "Taste?"], Labeled[12, "Pomelo"], Labeled[13, "Lemon"], Labeled[14, "Cherry"], Labeled[15, "Grape"]}, {Labeled[1 \[DirectedEdge] 2, "Green"], Labeled[1 \[DirectedEdge] 3, "Yellow"], Labeled[1 \[DirectedEdge] 4, "Red"], Labeled[2 \[DirectedEdge] 5, "Big"], Labeled[2 \[DirectedEdge] 6, "Middle"], Labeled[2 \[DirectedEdge] 7, "Small"], Labeled[3 \[DirectedEdge] 8, "Round"], Labeled[3 \[DirectedEdge] 9, "Slimness"], Labeled[4 \[DirectedEdge] 10, "Middle"], Labeled[4 \[DirectedEdge] 11, "Small"], Labeled[8 \[DirectedEdge] 12, "Big"], Labeled[8 \[DirectedEdge] 13, "Small"], Labeled[11 \[DirectedEdge] 14, "Sweet"], Labeled[11 \[DirectedEdge] 15, "Sour"]}] Above codes don't work, But it works when I change the last term like this: TreeGraph[{Labeled[1, "Color?"], Labeled[2, "Size?"], Labeled[3, "Shape?"], Labeled[4, "Size?"], Labeled[5, "Watermelon"], Labeled[6, "Apple"], Labeled[7, "Grape"], Labeled[8, "Size?"], Labeled[9, "Banana"], Labeled[10, "Apple"], Labeled[11, "Taste?"], Labeled[12, "Pomelo"], Labeled[13, "Lemon"], Labeled[14, "Cherry"], Labeled[15, "Grape"]}, {Labeled[1 \[DirectedEdge] 2, "Green"], Labeled[1 \[DirectedEdge] 3, "Yellow"], Labeled[1 \[DirectedEdge] 4, "Red"], Labeled[2 \[DirectedEdge] 5, "Big"], Labeled[2 \[DirectedEdge] 6, "Middle"], Labeled[2 \[DirectedEdge] 7, "Small"], Labeled[3 \[DirectedEdge] 8, "Round"], Labeled[3 \[DirectedEdge] 9, "Slimness"], Labeled[4 \[DirectedEdge] 10, "Middle"], Labeled[4 \[DirectedEdge] 11, "Small"], Labeled[8 \[DirectedEdge] 12, "Big"], Labeled[8 \[DirectedEdge] 13, "Small"], Labeled[11 \[DirectedEdge] 14, "Sweet"], 11 \[DirectedEdge] 15}]. I don't understand why ?

Consider the following code:

TreeGraph[{Labeled[1, "Color?"], Labeled[2, "Size?"], 
      Labeled[3, "Shape?"], Labeled[4, "Size?"], Labeled[5, "Watermelon"],
       Labeled[6, "Apple"], Labeled[7, "Grape"], Labeled[8, "\!\(\*
    StyleBox[\"Size\",\nFontWeight->\"Bold\"]\)\!\(\*
    StyleBox[\"?\",\nFontWeight->\"Plain\"]\)"], Labeled[9, "Banana"], 
      Labeled[10, "Apple"], Labeled[11, "Taste?"], Labeled[12, "Pomelo"], 
      Labeled[13, "Lemon"], Labeled[14, "Cherry"], Labeled[15, "Grape"]},
     {Labeled[1 \[DirectedEdge] 2, "Green"], 
      Labeled[1 \[DirectedEdge] 3, "Yellow"], 
      Labeled[1 \[DirectedEdge] 4, "Red"], 
      Labeled[2 \[DirectedEdge] 5, "Big"], 
      Labeled[2 \[DirectedEdge] 6, "Middle"], 
      Labeled[2 \[DirectedEdge] 7, "Small"], 
      Labeled[3 \[DirectedEdge] 8, "Round"], 
      Labeled[3 \[DirectedEdge] 9, "Slimness"], 
      Labeled[4 \[DirectedEdge] 10, "Middle"], 
      Labeled[4 \[DirectedEdge] 11, "Small"], 
      Labeled[8 \[DirectedEdge] 12, "Big"], 
      Labeled[8 \[DirectedEdge] 13, "Small"], 
      Labeled[11 \[DirectedEdge] 14, "Sweet"], 
      Labeled[11 \[DirectedEdge] 15, "Sour"]}]

Above codes don't work, But it works when I change the last term like this:

TreeGraph[{Labeled[1, "Color?"], Labeled[2, "Size?"], 
  Labeled[3, "Shape?"], Labeled[4, "Size?"], Labeled[5, "Watermelon"],
   Labeled[6, "Apple"], Labeled[7, "Grape"], Labeled[8, "Size?"], 
  Labeled[9, "Banana"], Labeled[10, "Apple"], Labeled[11, "Taste?"], 
  Labeled[12, "Pomelo"], Labeled[13, "Lemon"], Labeled[14, "Cherry"], 
  Labeled[15, "Grape"]},
 {Labeled[1 \[DirectedEdge] 2, "Green"], 
  Labeled[1 \[DirectedEdge] 3, "Yellow"], 
  Labeled[1 \[DirectedEdge] 4, "Red"], 
  Labeled[2 \[DirectedEdge] 5, "Big"], 
  Labeled[2 \[DirectedEdge] 6, "Middle"], 
  Labeled[2 \[DirectedEdge] 7, "Small"], 
  Labeled[3 \[DirectedEdge] 8, "Round"], 
  Labeled[3 \[DirectedEdge] 9, "Slimness"], 
  Labeled[4 \[DirectedEdge] 10, "Middle"], 
  Labeled[4 \[DirectedEdge] 11, "Small"], 
  Labeled[8 \[DirectedEdge] 12, "Big"], 
  Labeled[8 \[DirectedEdge] 13, "Small"], 
  Labeled[11 \[DirectedEdge] 14, "Sweet"], 11 \[DirectedEdge] 15}].

I don't understand why ?

POSTED BY: Huadun Wang