Solara•3w ago

Change size of matplotlib fig

So I am using Mesa so create a simulation. In order to visualize it I am using the build in SolaraViz library to visualize the simulation. However I am facing a problem, the matplotlib graph that is being used to plot the simulation is too small. I've tried to scale the graph without success so far. The code used looks as following:

def agent_portrayal(agent):
    
    if (isinstance(agent, Car)):
        return {
        "color": "red",
        "marker": "8",  # hexagon
        "size": 50,
    }

def post_process(ax):
    ax.set_aspect("equal")
    ax.set_xticks([])
    ax.set_yticks([])
    ax.set_facecolor("gray")

SpaceGraph = make_space_component(
    agent_portrayal, post_process=post_process, draw_grid=False 
)
page = SolaraViz(
    model1,
    components=[SpaceGraph],
    model_params=model_params,
    name="Car Simulation",
)
page

def agent_portrayal(agent):
    
    if (isinstance(agent, Car)):
        return {
        "color": "red",
        "marker": "8",  # hexagon
        "size": 50,
    }

def post_process(ax):
    ax.set_aspect("equal")
    ax.set_xticks([])
    ax.set_yticks([])
    ax.set_facecolor("gray")

SpaceGraph = make_space_component(
    agent_portrayal, post_process=post_process, draw_grid=False 
)
page = SolaraViz(
    model1,
    components=[SpaceGraph],
    model_params=model_params,
    name="Car Simulation",
)
page

This creates the following dashboard (see included image) All I want is to make the matplotlib part (the part with the gray background and red hexagons) larger. Any help would be appriciated!

5 Replies

MaartenBreddels•3w ago

Hi! can you create a reporducible example at https://py.cafe ? That saves us a lot of time to reproduce what you have

PyCafe: Create & Share Streamlit, Dash and Python Apps Online.

Playground for Python web frameworks. Run and edit Python code snippets for web frameworks in a web browser.

Mighty_PigOP•3w ago

For sure, once I am back at my pc I'll create a example

Mighty_PigOP•3w ago

https://py.cafe/MightyPiggie/car-simulation-mesa-solara

PyCafe - Solara - Car Simulation with Mesa and Solara

Create & Share Streamlit, Dash and Python Apps Online.

MaartenBreddels•2w ago

import matplotlib.pyplot as plt
plt.rcParams["figure.figsize"] = (4, 2)

import matplotlib.pyplot as plt
plt.rcParams["figure.figsize"] = (4, 2)

This affects the image.. but making it larger does not make the figure size larger. I think you have to ask the mesa team for this.

Mighty_PigOP•2w ago

Mmmh thanks! So I just tried it and it seems it is what we wanted! Thanks again!

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Change size of matplotlib fig