106 lines
3.0 KiB
Plaintext
106 lines
3.0 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"Tick Labels\n",
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"-----------\n",
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"\n",
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"This example demonstrates adding tick labels to maps on rectangular\n",
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"projections using special tick formatters."
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"import cartopy.crs as ccrs\n",
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"from cartopy.mpl.ticker import LongitudeFormatter, LatitudeFormatter\n",
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"import matplotlib.pyplot as plt\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"\n",
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"\n",
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"def main():\n",
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" fig = plt.figure(figsize=(8, 10))\n",
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"\n",
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" # Label axes of a Plate Carree projection with a central longitude of 180:\n",
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" ax1 = fig.add_subplot(2, 1, 1,\n",
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" projection=ccrs.PlateCarree(central_longitude=180))\n",
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" ax1.set_global()\n",
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" ax1.coastlines()\n",
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" ax1.set_xticks([0, 60, 120, 180, 240, 300, 360], crs=ccrs.PlateCarree())\n",
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" ax1.set_yticks([-90, -60, -30, 0, 30, 60, 90], crs=ccrs.PlateCarree())\n",
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" lon_formatter = LongitudeFormatter(zero_direction_label=True)\n",
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" lat_formatter = LatitudeFormatter()\n",
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" ax1.xaxis.set_major_formatter(lon_formatter)\n",
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" ax1.yaxis.set_major_formatter(lat_formatter)\n",
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"\n",
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" # Label axes of a Mercator projection without degree symbols in the labels\n",
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" # and formatting labels to include 1 decimal place:\n",
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" ax2 = fig.add_subplot(2, 1, 2, projection=ccrs.Mercator())\n",
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" ax2.set_global()\n",
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" ax2.coastlines()\n",
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" ax2.set_xticks([-180, -120, -60, 0, 60, 120, 180], crs=ccrs.PlateCarree())\n",
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" ax2.set_yticks([-78.5, -60, -25.5, 25.5, 60, 80], crs=ccrs.PlateCarree())\n",
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" lon_formatter = LongitudeFormatter(number_format='.1f',\n",
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" degree_symbol='',\n",
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" dateline_direction_label=True)\n",
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" lat_formatter = LatitudeFormatter(number_format='.1f',\n",
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" degree_symbol='')\n",
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" ax2.xaxis.set_major_formatter(lon_formatter)\n",
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" ax2.yaxis.set_major_formatter(lat_formatter)\n",
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"\n",
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" plt.show()\n",
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" "
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"main()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": []
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.8.5"
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"nbformat": 4,
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