Flowchart Symbols¶
schemdraw provides basic flowcharting abilities.
The schemdraw.flow
module contains a set of functions for defining
flowchart blocks that can be added to schemdraw Drawings.
from schemdraw import flow
Flowchart blocks:
-
class
schemdraw.flow.
Square
(w=3, h=2)¶ Flowchart square
- Parameters
w – width
h – height
-
class
schemdraw.flow.
Subroutine
(w=3.5, h=2, s=0.3)¶ Flowchart subprocess box (box with extra vertical lines)
- Parameters
w – width
h – height
s – spacing of side lines
-
class
schemdraw.flow.
Data
(w=3, h=2, s=0.5)¶ Flowchart data or I/O block (parallelogram)
- Parameters
w – width
h – height
s – slant of parallelogram
-
class
schemdraw.flow.
Start
(w=3, h=2)¶ Flowchart start block (oval)
- Parameters
w – width
h – height
-
class
schemdraw.flow.
Connect
(r=0.75)¶ Flowchart connect block (circle)
- Parameters
r – radius
-
class
schemdraw.flow.
Decision
(w=4, h=2, **kwargs)¶ Flowchart decision block (diamond)
- Parameters
w – width
h – height
N – Label for North/Top point of diamond
E – Label for East/Right point of diamond
S – Label for South/Bottom point of diamond
W – Label for West/Left point of diamond
All flowchart symbols have four anchors named ‘N’, ‘S’, ‘E’, and ‘W’ for the
four directions. The schemdraw.elements.intcircuits.Ic
element can be used with the flowchart elements to create blocks with multiple inputs/outputs per side if needed.
Flowchart elements must be connected with Line, or Arrow, elements. The w and h parameters must be manually specified to size each block to fit any labels.
Decisions¶
To label the decision branches, the schemdraw.flow.Eecision
element takes keyword
arguments for each cardinal direction. For example:
decision = flow.Decision(W='Yes', E='No', S='Maybe', label='Question?')
See the Flowcharting Gallery for more examples.