Change Log

v0.9.1 - 30-Jan-2021

  • Fixed missing module in setup.py.

v0.9 - 30-Jan-2021

  • Added optional SVG backend for drawing directly to an SVG image

  • Implemented method-chaining “fluent” interface for building elements

  • Added elements.style method for setting U.S. or European/IEC resistor style

  • Added parameter for drawing schematic on existing matplotlib axis

  • Added string parser for creating logic diagrams from expressions like “A or B”

  • Fixed zooming of arc segments

  • Added type annotations

  • Added Drawing.move method for moving cursor by dx and dy.

  • Drawing class implements += operator, so elements can be added by Drawing += Element()

  • Removed dependency on Numpy

  • Added Drawing.interactive` to allow element-by-element drawing with Matplotlib’s plt.ion().

  • New Elements:
    • CPE (Constant Phase Element)

    • Varactor

    • FuseIEEE

    • FuseIEC

    • SwitchRotary

    • SwitchReed

    • Jack

    • Plug

    • Ic555

    • IcDIP

    • SevenSegment

    • Outlet Elements

  • Deprecations:
    • Element.add_label is deprecated (use Element.label)

    • Drawing.loopI is deprecated (add a LoopCurrent element)

    • Drawing.labelI is deprecated (add a CurrentLabel element)

    • Drawing.labelI_inline is deprecated (add a CurrentLabelInline element)

v0.8 - 15-Aug-2020

  • Changed Header anchors to pinN for consistency with Ic.

  • Improved label placement with respect to anchor positions.

  • Prevent duplicate figures from showing in Jupyter Element representation

  • Improvements for headless server operation to prevent popup window

  • Added some undocumented features to documentation

  • Added Drawing.get_imagedata function for returning raw image bytes

  • Fixed pip installation issue with module capitalization. Must import lowercase schemdraw.

v0.7.1 - 26-Jun-2020

  • Bug fix: restore usage outside of Jupyter, so that Matplotlib window is shown when calling Drawing.draw().

v0.7 - 21-Jun-2020

  • Dropped support for Python 2. Now requires 3.7+.

  • Elements are now subclasses of Element. Previous (dict) element names are translated into new class names. Any user-defined elements will need to be converted to classes. The group_elements function is replaced with ElementDrawing class.

  • Allow fontsize or size keyword arguments interchangeably in Drawing and add_label

  • Updated flow.Decision to use keyword arguments for labeling decision branches

  • The Ic element label offset parameter changed from lblofst to lofst to avoid conflict with the main element label.

  • Direct access to Drawing.fig and Drawing.ax are no longer available. Instead, Drawing.draw() returns a schemdraw.Figure instance with fig and ax attributes.

  • Implemented Jupyter representation functions for both Drawing and Element classes.

  • New Elements:
    • Coax

    • Triax

    • SwitchDpst

    • SwitchDpdt

    • Relay

    • Optocoupler

    • Arrow

    • LineDot

    • Breaker

    • OrthoLines

    • RightLines

    • BusConnect

    • BusLine

    • Tag

    • Photoresistor

    • PhotoresistorBox

    • Thermistor

    • DiodeShockley

    • PotBox

    • RBoxVar

    • Solar

    • Neon

    • SourceSquare

    • AntennaLoop

    • AntennaLoop2

    • AudioJack

    • Tgate

    • Schmitt

    • SchmittNot

    • SchmittAnd

    • SchmittNand

v0.6.0, 11-Feb-2020

  • Refactored internals to allow more control over individual components of drawing. Should have no effect unless the user is accessing internal attributes of the Element object. This also adds the segments list to the Element object, which allows finer control over individual bits of the drawing.

  • Updated add_label so that “top” labels should always appear on top, regardless of flip/reverse

  • Swapped the direction of current sources, so that a current source with direction “up” has the arrow pointing up.

  • Added “zorder” parameter in the element definition dictionary and add method

  • Added elements.ic and elements.multiplexer functions as replacements to blackbox and mux. These include more functionality such as adjusting indiviudal pin rotation, color, and inverter bubbles.

  • Labels can be placed relative to an anchor position using the add_label method. This could be useful, for example, in labeling pin numbers on a logic gate or opamp.

  • Added new anchors to OPAMPs for power supply and offset nulls.

  • New Elements:
    • MIC

    • MOTOR

  • Documentation:
    • Upgraded documentation to Sphinx and moved to readthedocs.org at https://schemdraw.readthedocs.io/en/latest/.

    • Changed preferred import to import SchemDraw.elements as elm. Apparently some people still use import * with pylab; this suggestion will help avoid conflicts.

v0.5.0, 21-Jul-2019
  • Added flowcharting symbol methods to SchemDraw.flow module

  • Added signal processing symbols to SchemDraw.dsp module

  • Implemented fill parameter on Drawing.add to fill shapes and closed paths with a solid color

  • New elements:
    • Fuse

    • CapacitorVar,

    • DiodeTunnel

    • Jfet

    • Diac

    • Triac

    • SCR

v0.4.0, 03-Nov-2018
  • Fixed drawing of NOT and related gates to property extend the path

  • Fixed arrow translation when grouping elements

  • Fixed sidelabels and plabels of blackbox when empty

  • Fixed arc drawing due to change in Matplotlib 2.2 on asymmetric partial arcs

v0.3.0, 03-Jul-2017
  • Added function for drawing multiplexers/demultiplexers

  • Updates to labelI() method to allow reversing arrow and changing length

  • Add CSS to documentation

  • New elements:
    • PHOTODIODE

    • NFET4

    • PFET4

    • VSS

    • VDD

v0.2.2, 06-Mar-2016
  • Documentation updates

  • New elements:
    • Transformer

    • Josephson Junction (JJ)

v0.2.1, 03-May-2015
  • Fixed anchor names when element overwrites base anchor, such as BJT_PNP.

  • Added showplot keyword to draw() for non-interactive mode.

  • Added 2-collector BJT.

  • Documentation: added gallery of schematics.

v0.2.0, 29-Apr-2015
  • Added default line width argument to drawing() class. Default width is now 1.5.

  • Converted documentation to use all vector-based images

  • Added XKCD-mode example

  • New elements:
    • BATTERY

    • BAT_CELL

    • SPEAKER

    • BUTTON

    • BUTTON_NC

    • XTAL

    • MEMRISTOR,

    • SCHOTTKY

    • ZENER

    • LED2

v0.1.4, 30-Sep-2014
  • Add function to group several elements into one

  • Add blackbox() function to generate box elements with arbitrary inputs

  • Allow element definition to specify label alignment

  • Added linestyle to element kwargs and definition

  • New elements:
    • LED

    • OPAMP_NOSIGN

    • GAP_LABEL

    • ELLIPSIS

v0.1.3, 21-Sep-2014
  • Added logic gate elements

  • Added transparent and dpi options to save() function

  • Fixed issues with zooming and rotating elements with arcs

  • LaTeX typesetting uses sans-serif, regular fonts for consistency

v0.1.0, 25-Aug-2014
  • Initial Release