René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Show grid ticks on geographic plots","articleBody":"### Description\r\n\r\nCurrently, only `grid_lines` is supported for geographic plots.\r\nIt would be useful to add the `grid_ticks` for cleaner plot.\r\n\r\n### Steps to reproduce\r\n\r\n```python\r\nimport proplot as plot\r\n\r\nfig, axs = plot.subplots(proj='cyl')\r\naxs.format(land=True,\r\n           labels=True,\r\n           lonlines=20,\r\n           latlines=20,\r\n           gridminor=True,\r\n           lonlim=(-140, 60),\r\n           latlim=(-10, 50))\r\n```\r\n\r\n**Expected behavior**: [What you expected to happen]\r\n\r\nTicks without gridlines.\r\n\r\nI found one example showing ticks with Gridlines:\r\n```\r\nimport numpy as np\r\nimport matplotlib.pyplot as plt\r\nimport matplotlib.ticker as mticker\r\nimport cartopy.crs as ccrs\r\nfrom cartopy.mpl.ticker import LongitudeFormatter, LatitudeFormatter\r\n\r\ndlon, dlat = 60, 30\r\nxticks = np.arange(0, 360.1, dlon)\r\nyticks = np.arange(-90, 90.1, dlat)\r\n\r\nfig = plt.figure(figsize=(6,5))\r\nax = fig.add_subplot(1,1,1, projection=ccrs.PlateCarree(central_longitude=180))\r\nax.coastlines() #海岸线\r\n\r\ngl = ax.gridlines(crs=ccrs.PlateCarree(), draw_labels=False,linewidth=1, linestyle=':', color='k', alpha=0.8)\r\ngl.xlocator = mticker.FixedLocator(xticks)\r\ngl.ylocator = mticker.FixedLocator(yticks)\r\n\r\nax.set_xticks(xticks, crs=ccrs.PlateCarree())\r\nax.set_yticks(yticks, crs=ccrs.PlateCarree())\r\n\r\nax.xaxis.set_major_formatter(LongitudeFormatter(zero_direction_label=True))\r\nax.yaxis.set_major_formatter(LatitudeFormatter())\r\n```\r\n![image](https://user-images.githubusercontent.com/30388627/94339485-f0983500-002c-11eb-98e1-fcfee1c9500c.png)\r\n\r\n**Actual behavior**: [What actually happened]\r\nCan't let ticks show.\r\n![test_tick](https://user-images.githubusercontent.com/30388627/94339407-64860d80-002c-11eb-8b77-8b871b888e3b.png)\r\n\r\n\r\n\r\n### Proplot version\r\n\r\n`0.6.4`\r\n","author":{"url":"https://github.com/zxdawn","@type":"Person","name":"zxdawn"},"datePublished":"2020-09-26T11:19:56.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/227/proplot/issues/227"}