You can investigate flowR's analyses using the REPL. Commands like :dataflow* allow you to view a dataflow graph for a given R script.
https://mermaid.live/view#base64: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
Following the link output should show the following:
flowchart LR
1{{"`#91;RNumber#93; 0
(1)
*1.8*`"}}
0["`#91;RSymbol#93; sum
(0)
*1.1-3*`"]
2[["`#91;RBinaryOp#93; #60;#45;
(2)
*1.1-8*
(0, 1)`"]]
built-in:_-["`Built-In:
#60;#45;`"]
style built-in:_- stroke:gray,fill:lightgray,stroke-width:2px,opacity:.8;
4{{"`#91;RNumber#93; 1
(4)
*2.12*`"}}
3["`#91;RSymbol#93; product
(3)
*2.1-7*`"]
5[["`#91;RBinaryOp#93; #60;#45;
(5)
*2.1-12*
(3, 4)`"]]
7{{"`#91;RNumber#93; 7
(7)
*3.6*`"}}
6["`#91;RSymbol#93; w
(6)
*3.1*`"]
8[["`#91;RBinaryOp#93; #60;#45;
(8)
*3.1-6*
(6, 7)`"]]
10{{"`#91;RNumber#93; 10
(10)
*4.6-7*`"}}
9["`#91;RSymbol#93; N
(9)
*4.1*`"]
11[["`#91;RBinaryOp#93; #60;#45;
(11)
*4.1-7*
(9, 10)`"]]
12["`#91;RSymbol#93; i
(12)
*6.6*`"]
13{{"`#91;RNumber#93; 1
(13)
*6.11*`"}}
16(["`#91;RSymbol#93; N
(16)
*6.14*`"])
17{{"`#91;RNumber#93; 1
(17)
*6.16*`"}}
18[["`#91;RBinaryOp#93; #45;
(18)
*6.14-16*
(16, 17)`"]]
built-in:-["`Built-In:
#45;`"]
style built-in:- stroke:gray,fill:lightgray,stroke-width:2px,opacity:.8;
19[["`#91;RExpressionList#93; (
(19)
*6.13*
(18)`"]]
built-in:_["`Built-In:
(`"]
style built-in:_ stroke:gray,fill:lightgray,stroke-width:2px,opacity:.8;
20[["`#91;RBinaryOp#93; #58;
(20)
*6.11-17*
(13, 19)`"]]
built-in::["`Built-In:
#58;`"]
style built-in:: stroke:gray,fill:lightgray,stroke-width:2px,opacity:.8;
24(["`#91;RSymbol#93; sum
(24, :may:36+)
*7.10-12*`"])
25(["`#91;RSymbol#93; i
(25, :may:36+)
*7.16*`"])
26[["`#91;RBinaryOp#93; #43;
(26, :may:36+)
*7.10-16*
(24, 25)`"]]
27(["`#91;RSymbol#93; w
(27, :may:36+)
*7.20*`"])
28[["`#91;RBinaryOp#93; #43;
(28, :may:36+)
*7.10-20*
(26, 27)`"]]
23["`#91;RSymbol#93; sum
(23, :may:)
*7.3-5*`"]
29[["`#91;RBinaryOp#93; #60;#45;
(29, :may:36+)
*7.3-20*
(23, 28)`"]]
31(["`#91;RSymbol#93; product
(31, :may:36+)
*8.14-20*`"])
32(["`#91;RSymbol#93; i
(32, :may:36+)
*8.24*`"])
33[["`#91;RBinaryOp#93; #42;
(33, :may:36+)
*8.14-24*
(31, 32)`"]]
30["`#91;RSymbol#93; product
(30, :may:)
*8.3-9*`"]
34[["`#91;RBinaryOp#93; #60;#45;
(34, :may:36+)
*8.3-24*
(30, 33)`"]]
35[["`#91;RExpressionList#93; #123;
(35, :may:36+)
*6.20*
(29, 34)`"]]
36[["`#91;RForLoop#93; for
(36)
*6.1-9.1*
(12, 20, 35)`"]]
built-in:for["`Built-In:
for`"]
style built-in:for stroke:gray,fill:lightgray,stroke-width:2px,opacity:.8;
38{{"`#91;RString#93; #34;Sum#58;#34;
(38)
*11.5-10*`"}}
40(["`#91;RSymbol#93; sum
(40)
*11.13-15*`"])
built-in:sum["`Built-In:
sum`"]
style built-in:sum stroke:gray,fill:lightgray,stroke-width:2px,opacity:.8;
42{{"`#91;RString#93; #34;
#34;
(42)
*11.18-21*`"}}
44[["`#91;RFunctionCall#93; cat
(44)
*11.1-22*
(38, 40, 42)`"]]
built-in:cat["`Built-In:
cat`"]
style built-in:cat stroke:gray,fill:lightgray,stroke-width:2px,opacity:.8;
46{{"`#91;RString#93; #34;Product#58;#34;
(46)
*12.5-14*`"}}
48(["`#91;RSymbol#93; product
(48)
*12.17-23*`"])
50{{"`#91;RString#93; #34;
#34;
(50)
*12.26-29*`"}}
52[["`#91;RFunctionCall#93; cat
(52)
*12.1-30*
(46, 48, 50)`"]]
0 -->|"defined-by"| 1
0 -->|"defined-by"| 2
2 -->|"argument"| 1
2 -->|"returns, argument"| 0
2 -.->|"reads, calls"| built-in:_-
linkStyle 4 stroke:gray;
3 -->|"defined-by"| 4
3 -->|"defined-by"| 5
5 -->|"argument"| 4
5 -->|"returns, argument"| 3
5 -.->|"reads, calls"| built-in:_-
linkStyle 9 stroke:gray;
6 -->|"defined-by"| 7
6 -->|"defined-by"| 8
8 -->|"argument"| 7
8 -->|"returns, argument"| 6
8 -.->|"reads, calls"| built-in:_-
linkStyle 14 stroke:gray;
9 -->|"defined-by"| 10
9 -->|"defined-by"| 11
11 -->|"argument"| 10
11 -->|"returns, argument"| 9
11 -.->|"reads, calls"| built-in:_-
linkStyle 19 stroke:gray;
12 -->|"defined-by"| 20
16 -->|"reads"| 9
18 -->|"reads, argument"| 16
18 -->|"reads, argument"| 17
18 -.->|"reads, calls"| built-in:-
linkStyle 24 stroke:gray;
19 -->|"returns, argument"| 18
19 -.->|"reads"| built-in:_
linkStyle 26 stroke:gray;
20 -->|"reads, argument"| 13
20 -->|"reads, argument"| 19
20 -.->|"reads, calls"| built-in::
linkStyle 29 stroke:gray;
24 -->|"reads"| 0
24 -->|"reads"| 23
24 -->|"CD-True"| 36
linkStyle 32 stroke:gray,color:gray;
25 -->|"reads"| 12
25 -->|"CD-True"| 36
linkStyle 34 stroke:gray,color:gray;
26 -->|"reads, argument"| 24
26 -->|"reads, argument"| 25
26 -.->|"reads, calls"| built-in:_
linkStyle 37 stroke:gray;
26 -->|"CD-True"| 36
linkStyle 38 stroke:gray,color:gray;
27 -->|"reads"| 6
27 -->|"CD-True"| 36
linkStyle 40 stroke:gray,color:gray;
28 -->|"reads, argument"| 26
28 -->|"reads, argument"| 27
28 -.->|"reads, calls"| built-in:_
linkStyle 43 stroke:gray;
28 -->|"CD-True"| 36
linkStyle 44 stroke:gray,color:gray;
23 -->|"defined-by"| 28
23 -->|"defined-by"| 29
29 -->|"argument"| 28
29 -->|"returns, argument"| 23
29 -.->|"reads, calls"| built-in:_-
linkStyle 49 stroke:gray;
29 -->|"CD-True"| 36
linkStyle 50 stroke:gray,color:gray;
31 -->|"reads"| 3
31 -->|"reads"| 30
31 -->|"CD-True"| 36
linkStyle 53 stroke:gray,color:gray;
32 -->|"reads"| 12
32 -->|"CD-True"| 36
linkStyle 55 stroke:gray,color:gray;
33 -->|"reads, argument"| 31
33 -->|"reads, argument"| 32
33 -.->|"reads, calls"| built-in:_
linkStyle 58 stroke:gray;
33 -->|"CD-True"| 36
linkStyle 59 stroke:gray,color:gray;
30 -->|"defined-by"| 33
30 -->|"defined-by"| 34
34 -->|"argument"| 33
34 -->|"returns, argument"| 30
34 -.->|"reads, calls"| built-in:_-
linkStyle 64 stroke:gray;
34 -->|"CD-True"| 36
linkStyle 65 stroke:gray,color:gray;
35 -->|"argument"| 29
35 -->|"returns, argument"| 34
35 -.->|"reads, calls"| built-in:_
linkStyle 68 stroke:gray;
35 -->|"CD-True"| 36
linkStyle 69 stroke:gray,color:gray;
36 -->|"argument"| 12
36 -->|"reads, argument"| 20
36 -->|"argument, non-standard-evaluation"| 35
36 -.->|"reads, calls"| built-in:for
linkStyle 73 stroke:gray;
40 -->|"reads"| 0
40 -->|"reads"| 23
40 -.->|"reads"| built-in:sum
linkStyle 76 stroke:gray;
44 -->|"argument"| 38
44 -->|"reads, argument"| 40
44 -->|"argument"| 42
44 -.->|"reads, calls"| built-in:cat
linkStyle 80 stroke:gray;
48 -->|"reads"| 3
48 -->|"reads"| 30
52 -->|"argument"| 46
52 -->|"reads, argument"| 48
52 -->|"argument"| 50
52 -.->|"reads, calls"| built-in:cat
linkStyle 86 stroke:gray;
Loading
(The analysis required 13.9 ms (including parse and normalize, using the r-shell engine) within the generation environment.)
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