Plot Module

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Plot workbench icon

Introduction

FreeCAD is able to perform plots using the matplotlib Python library. A module is provided to this end, as an external add-on in version 0.19 and as a core component from version 0.20 on. Older versions of FreeCAD are not covered in this documentation.

The produced plots offer the standard matplotlib tools to edit and save. On top of that, a Plot Workbench is provided as an external add-on offering more complete tools to edit the plot and save it. The add-on can be installed with the Add-on manager.

Module

The module can be invoked in a Python console or in a macro. The first thing you must do is importing the module. In FreeCAD 0.19 you must first install the Plot Workbench using the Add-on manager, and then you can import Plot by typing:

from freecad.plot import Plot

From FreeCAD 0.20 on plot module is already packaged within the program, so you don't need to install any add-on, but just type

from FreeCAD.Plot import Plot

After that, you can plot a straight line from (0,0) to (1,2) just simply typing

Plot.plot([0, 1], [0, 2])

You can find more complex examples in the Plot Basic tutorial and the Plot MultiAxes tutorial.

Herramientas

If you decide to install the Plot Workbench using the Add-on manager, you will have the following tools available to manage the plots created with the module:

Guardar gráfico: Guarda el gráfico en varios formatos, seleccionando el tamaño y resolución.
Ejes: Añade, elimina o edita los ejes.
Series: Edita el estilo de las series y establece su título.
Malla: Muestra/oculat la malla.
Legenda: Muestra/oculta la leyenda.
Títulos: Edita los títulos.
Posiciones: Posiciona los diferentes elementos, como títulos o legenda.

Scripting

Siendo el módulo de graficado una adaptación de matplotlib, usted puede hacer uso libremente de todas las posibilidades del mismo. Acuda a la sección ejemplos de scripting para saber más.