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import unreal_engine as ue

# EPixelFormat defines the various pixel formats for a texture/image, we will use RGBA with 8bit per channel

from unreal_engine.enums import EPixelFormat

import matplotlib

# set the Agg renderer as we do not need any toolkit

matplotlib.use('Agg')

import matplotlib.pyplot as plt

# set texture/plot dimensions and dpi, ensure dpi is a float !

width = 1024

height = 1024

dpi = 72.0

# create a new figure with the specified sizes

fig = plt.figure(1)

fig.set_dpi(dpi)

fig.set_figwidth(width/dpi)

fig.set_figheight(height/dpi)

# plot a simple graph with a label on the y axis

plt.plot([1, 2, 3, 4])

plt.ylabel('some numbers')

# draw the graph (in memory)

fig.canvas.draw()

# create a texture in memory (will be saved later)

texture = ue.create_transient_texture(width, height, EPixelFormat.PF_R8G8B8A8)

# copy pixels from matplotlib canvas to the texture as RGBA

texture.texture_set_data(fig.canvas.buffer_rgba())

# save the texture

texture.save_package('/Game/FirstGraphTexture')

# open its editor

ue.open_editor_for_asset(texture)