René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Axes3D.view_init elevation issue between 270 and 360 degrees","articleBody":"### Bug report\r\n\r\n**Bug summary**\r\n\r\n\u003c!--A short 1-2 sentences that succinctly describes the bug--\u003e\r\nI want to make rotate a 3D plot using the `view_init `method. If the `azim` argument is used it makes a smooth rotation around the z-axis. However, if the `elev` argument is used the plot is flipped after the angle 270 degrees. This problem seems to come from the fact that the range [0:-90] does not give the same output as the range [270:360] while it should. Here are two outputs that should be the same for -15 and 345, but there are not.\r\n\r\n![345](https://user-images.githubusercontent.com/11176618/34902501-af08c20a-f7ea-11e7-9326-42e4e0f8eb27.png)\r\n![-15](https://user-images.githubusercontent.com/11176618/34902502-af18b994-f7ea-11e7-8d0f-971215223621.png)\r\n\r\n**Code for reproduction**\r\n\r\n```python\r\nimport matplotlib.pyplot as plt\r\nfrom matplotlib import cm\r\nfrom mpl_toolkits.mplot3d import axes3d\r\nfrom pylab import *\r\n\r\nelevation=345 #or -15\r\nangle=None\r\n\r\nfig = plt.figure()\r\nax = fig.add_subplot(111, projection='3d')\r\nX, Y, Z = axes3d.get_test_data(0.05)\r\ns = ax.plot_surface(X, Y, Z, cmap=cm.jet)\r\nax.view_init(elev = elevation, azim=angle)\r\nplt.axis('off')\r\n```\r\n\r\n\r\n**Matplotlib version**\r\n  * Operating system: Debian\r\n  * Matplotlib version: 2.1\r\n  * Matplotlib backend:TkAgg\r\n  * Python version: 2.7\r\n\r\nInstalled from pip\r\n\r\n","author":{"url":"https://github.com/amichaut","@type":"Person","name":"amichaut"},"datePublished":"2018-01-13T03:56:13.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/10241/matplotlib/issues/10241"}