1 | initial version |

Hi! You can find more details about pyplot here: x0.no/5yi3

You can try adding two lines to your code to get the axis intersected at (0,0), like this.

```
import matplotlib.pyplot as plt
plt.plot([1, 3, 2, 4])
plt.axhline(y=0)
plt.axvline(x=0)
plt.savefig('1.png')
```

Maybe creating the plots using functions from sage might be easier than using matplotlib.

2 | updated link |

Hi! You can find more details about pyplot here: x0.no/5yi3

You can try adding two lines to your code to get the axis intersected at (0,0), like this.

```
import matplotlib.pyplot as plt
plt.plot([1, 3, 2, 4])
plt.axhline(y=0)
plt.axvline(x=0)
plt.savefig('1.png')
```

Maybe creating the plots using functions from sage might be easier than using matplotlib.

3 | No.3 Revision |

Hi! You can find more details about pyplot here: x0.no/5yi3

You can try adding two lines to your code to get the axis intersected at (0,0), like this.

```
import matplotlib.pyplot as plt
plt.plot([1, 3, 2, 4])
plt.axhline(y=0)
plt.axvline(x=0)
plt.savefig('1.png')
```

This produces:

The original plot was:

Maybe creating the plots using functions from sage might be easier than using matplotlib.

**Edit**: Added images to illustrate difference and updated link.

Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.