Plotting help! Time is of the essence

[lordhyperfluxed]

Hello, I seem to be having an issue with plotting a figure correctly. it brings up the error that: ValueError: Image size of 1215624718x1259970318 pixels is too large. It must be less than 2^16 in each direction. The point is to plot the moon and Earth and plot a rocket flying around them in an orbit slingshot sorta way.

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Earth = plt.Circle((0, 0), 6378000, color ='g', label = 'Earth') Moon = plt.Circle((0, 384e6), 1737000, color ='grey', label='Moon') plt.gcf().add_artist(Earth) plt.gcf().add_artist(Moon) plt.plot(xlist, ylist, color='b', label='Journey') plt.legend(loc='lower right') plt.xlabel('x-position (m)') plt.ylabel('y-position (m)') plt.ylim((3.5e8, 4e8)) plt.xlim((-0.2e8,0.2e8)) plt.axis('equal') plt.grid() plt.show()

Could anyone help? Thanks for your time

[Larz60+]

it brings up the error that

It would be nice to know what 'it' is. I assume matplotlib?
Also, please show error traceback message unaltered and complete using BBcode tags

[lordhyperfluxed]

Sorry yes it is matplotlib, i'm new to python and this forum. i don't know what BBcode is but the full error for this section is below:


File "<ipython-input-9-3d28e2a5b1b3>", line 1, in <module>
runfile('C:/Users/Imad/Desktop/ex4.py', wdir='C:/Users/Imad/Desktop')

File "C:\ProgramData\Anaconda3\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 704, in runfile
execfile(filename, namespace)

File "C:\ProgramData\Anaconda3\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 108, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)

File "C:/Users/Imad/Desktop/ex4.py", line 341, in <module>
corners = ((x1, y1), (x2, y2))

NameError: name 'x1' is not defined

Traceback (most recent call last):

File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\formatters.py", line 341, in __call__
return printer(obj)

File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\pylabtools.py", line 244, in <lambda>
png_formatter.for_type(Figure, lambda fig: print_figure(fig, 'png', **kwargs))

File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\pylabtools.py", line 128, in print_figure
fig.canvas.print_figure(bytes_io, **kw)

File "C:\ProgramData\Anaconda3\lib\site-packages\matplotlib\backend_bases.py", line 2075, in print_figure
**kwargs)

File "C:\ProgramData\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 510, in print_png
FigureCanvasAgg.draw(self)

File "C:\ProgramData\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 396, in draw
self.renderer = self.get_renderer(cleared=True)

File "C:\ProgramData\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 417, in get_renderer
self.renderer = RendererAgg(w, h, self.figure.dpi)

File "C:\ProgramData\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 87, in __init__
self._renderer = _RendererAgg(int(width), int(height), dpi)

ValueError: Image size of 1215624718x1259970318 pixels is too large. It must be less than 2^16 in each direction.

<Figure size 432x288 with 2 Axes>


Thanks again!

[Larz60+]

i don't know what BBcode is but the full error for this section is below:

Click on the link: BBcode and learn please. Forum rules.

run migration (twice) shown in post 2

[lordhyperfluxed]

Like so?

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Earth = plt.Circle((0, 0), 6378000, color ='g', label = 'Earth') Moon = plt.Circle((0, 384e6), 1737000, color ='grey', label='Moon') plt.gcf().add_artist(Earth) plt.gcf().add_artist(Moon) plt.plot(xlist, ylist, color='b', label='Journey') plt.legend(loc='lower right') plt.xlabel('x-position (m)') plt.ylabel('y-position (m)') plt.ylim((3.5e8, 4e8)) plt.xlim((-0.2e8,0.2e8)) plt.axis('equal') plt.grid() plt.show()

Error:
  File "<ipython-input-9-3d28e2a5b1b3>", line 1, in <module>
    runfile('C:/Users/Imad/Desktop/ex4.py', wdir='C:/Users/Imad/Desktop')

  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 704, in runfile
    execfile(filename, namespace)

  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 108, in execfile
    exec(compile(f.read(), filename, 'exec'), namespace)

  File "C:/Users/Imad/Desktop/ex4.py", line 341, in <module>
    corners = ((x1, y1), (x2, y2))

NameError: name 'x1' is not defined

Traceback (most recent call last):

  File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\formatters.py", line 341, in __call__
    return printer(obj)

  File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\pylabtools.py", line 244, in <lambda>
    png_formatter.for_type(Figure, lambda fig: print_figure(fig, 'png', **kwargs))

  File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\pylabtools.py", line 128, in print_figure
    fig.canvas.print_figure(bytes_io, **kw)

  File "C:\ProgramData\Anaconda3\lib\site-packages\matplotlib\backend_bases.py", line 2075, in print_figure
    **kwargs)

  File "C:\ProgramData\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 510, in print_png
    FigureCanvasAgg.draw(self)

  File "C:\ProgramData\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 396, in draw
    self.renderer = self.get_renderer(cleared=True)

  File "C:\ProgramData\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 417, in get_renderer
    self.renderer = RendererAgg(w, h, self.figure.dpi)

  File "C:\ProgramData\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py", line 87, in __init__
    self._renderer = _RendererAgg(int(width), int(height), dpi)

ValueError: Image size of 1215624718x1259970318 pixels is too large. It must be less than 2^16 in each direction.

<Figure size 432x288 with 2 Axes>

[Larz60+]

Thank you.

[scidam]

You can try to continue with the following piece of code:

i

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mport matplotlib.pyplot as plt # ---------- Constants ---------- SCALE = 10**6 EARTH_RADIUS  = 6378000 / SCALE MOON_RADIUS = 1737000 / SCALE MOON_DIST = 384e6 / SCALE # -------------------------------   fig = plt.figure() ax = fig.add_subplot(111) Earth = plt.Circle((0, 0), EARTH_RADIUS, color='g', label = 'Earth') Moon = plt.Circle((0, MOON_DIST), MOON_RADIUS, color ='r', label='Moon') ax.add_artist(Moon) ax.add_artist(Earth) plt.xlabel('x-position (Mm)') plt.ylabel('y-position (Mm)') plt.xlim(-10 ** 7 / SCALE, 10**8 / SCALE) plt.ylim(-10 ** 7 / SCALE, 4* 10**8 / SCALE) ax.set_aspect('equal') plt.grid() plt.show()

AFAIK, Matplotlib is designed to make publication ready figures. It is possible to create
animation using Matplotlib, but it is not primarily designed for this.