yutsuo
/
jupyter-notebooks
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
Browse Source

update

master
yutsuo 7 years ago
parent
203ae2def9
commit
1743d66f3d
4 changed files with 157 additions and 329 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 157
      Geotiff.ipynb
  2. 0
      HDF5.ipynb
  3. 205
      Untitled1.ipynb
  4. 124
      Untitled2.ipynb

157
Geotiff.ipynb
Unescape View File

@ -0,0 +1,157 @@
{
"cells": [
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"# First: read the geotiff image with GDAL.\n",
"from osgeo import gdal, osr\n",
"\n",
"gdal.UseExceptions()\n",
"\n",
"\n",
"fname = '/notebooks/resources/T22KHG_20190425T132241_TCI_smaller.tif'\n",
"\n",
"ds = gdal.Open(fname)\n",
"data = ds.ReadAsArray()\n",
"gt = ds.GetGeoTransform()\n",
"proj = ds.GetProjection()\n",
"\n",
"inproj = osr.SpatialReference()\n",
"inproj.ImportFromWkt(proj)\n",
"\n",
"print('\\n\\n## ds ##:\\n\\n' + str(ds))\n",
"print('\\n\\n## data ##:\\n\\n' + str(data))\n",
"print('\\n\\n## gt ##:\\n\\n' + str(gt))\n",
"print('\\n\\n## proj ##:\\n\\n' + str(proj))\n",
"print('\\n\\n## inproj ##:\\n\\n' + str(inproj))"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"scrolled": false
},
"outputs": [],
"source": [
"# Second: convert the WKT projection information to a cartopy projection.\n",
"import cartopy.crs as ccrs\n",
"\n",
"projcs = inproj.GetAuthorityCode('PROJCS')\n",
"print('\\n\\n## projcs ##:\\n\\n' + str(projcs))\n",
"\n",
"projection = ccrs.epsg(projcs)\n",
"print('\\n\\n## projection ##:\\n\\n' + str(projection))"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"# Third (and last): the figure.\n",
"import matplotlib.pyplot as plt\n",
"%matplotlib inline\n",
"\n",
"subplot_kw = dict(projection=projection)\n",
"fig, ax = plt.subplots(figsize=(9, 9), subplot_kw=subplot_kw)\n",
"\n",
"extent = (gt[0], gt[0] + ds.RasterXSize * gt[1],\n",
" gt[3] + ds.RasterYSize * gt[5], gt[3])\n",
"\n",
"img = ax.imshow(data[:3, :, :].transpose((1, 2, 0)), extent=extent, origin='upper')"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"import inspect\n",
"\n",
"for i in inspect.getmembers(ds):\n",
" # Ignores anything starting with underscore \n",
" # (that is, private and protected attributes)\n",
" if not i[0].startswith('_'):\n",
" # Ignores methods\n",
" if not inspect.ismethod(i[1]):\n",
" print(i)\n",
"print('\\n')\n",
"# dir(ds)"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"# # First: read the geotiff image with GDAL.\n",
"# from osgeo import gdal, osr\n",
"\n",
"# gdal.UseExceptions()\n",
"\n",
"\n",
"# fname = 'T22KHG_20190425T132241_TCI_smaller.tif'\n",
"\n",
"# ds = gdal.Open(fname)\n",
"# data = ds.ReadAsArray()\n",
"# gt = ds.GetGeoTransform()\n",
"# proj = ds.GetProjection()\n",
"\n",
"# inproj = osr.SpatialReference()\n",
"# inproj.ImportFromWkt(proj)\n",
"\n",
"# print(inproj)\n",
"\n",
"# # Second: convert the WKT projection information to a cartopy projection.\n",
"# import cartopy.crs as ccrs\n",
"\n",
"\n",
"\n",
"# projcs = inproj.GetAuthorityCode('PROJCS')\n",
"# print(projcs)\n",
"# projection = ccrs.epsg(projcs)\n",
"# print(projection)\n",
"\n",
"# # Third (and last): the figure.\n",
"# import matplotlib.pyplot as plt\n",
"# %matplotlib inline\n",
"\n",
"# subplot_kw = dict(projection=projection)\n",
"# fig, ax = plt.subplots(figsize=(9, 9), subplot_kw=subplot_kw)\n",
"\n",
"# extent = (gt[0], gt[0] + ds.RasterXSize * gt[1],\n",
"# gt[3] + ds.RasterYSize * gt[5], gt[3])\n",
"\n",
"# img = ax.imshow(data[:3, :, :].transpose((1, 2, 0)), extent=extent, origin='upper')"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.5.2"
}
},
"nbformat": 4,
"nbformat_minor": 2
}

0
Untitled.ipynb → HDF5.ipynb
Unescape View File

205
Untitled1.ipynb
View File

File diff suppressed because one or more lines are too long

124
Untitled2.ipynb
Unescape View File

@ -1,124 +0,0 @@
{
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [
{
"ename": "AttributeError",
"evalue": "'NoneType' object has no attribute 'RasterXSize'",
"output_type": "error",
"traceback": [
"\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
"\u001b[0;31mAttributeError\u001b[0m Traceback (most recent call last)",
"\u001b[0;32m<ipython-input-1-fe2196e9e159>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[1;32m 34\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 35\u001b[0m \u001b[0;31m#Get the dimentions of column and row\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 36\u001b[0;31m \u001b[0mnc\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mds\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mRasterXSize\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m 37\u001b[0m \u001b[0mnr\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mds\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mRasterYSize\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 38\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
"\u001b[0;31mAttributeError\u001b[0m: 'NoneType' object has no attribute 'RasterXSize'"
]
}
],
"source": [
"# pip install --user https://github.com/matplotlib/basemap/archive/master.zip\n",
"\n",
"import os\n",
"from mpl_toolkits.basemap import Basemap\n",
"import matplotlib.pyplot as plt\n",
"from osgeo import gdal\n",
"from osgeo import osr\n",
"import numpy as np\n",
"import math\n",
"\n",
"#Plot setup\n",
"fig= plt.figure(figsize=(10,8))\n",
"\n",
"ax = plt.subplot(111,aspect = 'equal')\n",
"plt.subplots_adjust(left=0.1, bottom=0.1, right=0.9, top=0.9, wspace=0, hspace=0)\n",
"\n",
"#Map setup\n",
"map = Basemap(resolution='f', projection='cyl', llcrnrlon=-75, llcrnrlat=-5, urcrnrlon=-46, urcrnrlat=0)\n",
"\n",
"parallels = np.arange(-50,50,1.)\n",
"meridians = np.arange(0,360,1)\n",
"\n",
"map.drawparallels(parallels,labels=[1,0,0,0],color='w', fontsize=10, fontweight='bold')\n",
"meri = map.drawmeridians(meridians,labels=[0,0,0,1],color='w', fontsize=10, fontweight='bold')\n",
"\n",
"#Load colormap and setup elevation contour levels\n",
"cmap=plt.get_cmap(\"jet\")\n",
"clevs = np.linspace(0, 305, 21)\n",
"\n",
"# Load GeoTiff data\n",
"raster = 'geo_dem_v2_52-50.tif'\n",
"\n",
"ds = gdal.Open(raster)\n",
"\n",
"#Get the dimentions of column and row\n",
"nc = ds.RasterXSize\n",
"nr = ds.RasterYSize\n",
"\n",
"#Read elevation data\n",
"data = ds.ReadAsArray()\n",
"\n",
"#Get Longitude and Latitude info\n",
"geotransform = ds.GetGeoTransform()\n",
"xOrigin = geotransform[0]\n",
"yOrigin = geotransform[3]\n",
"pixelWidth = geotransform[1]\n",
"pixelHeight = geotransform[5]\n",
"\n",
"#Generate Longitude and Latitude array\n",
"lons = xOrigin + np.arange(0, nc)*pixelWidth\n",
"lats = yOrigin + np.arange(0, nr)*pixelHeight\n",
"\n",
"#Contour plot\n",
"x, y = map(*np.meshgrid(lons, lats))\n",
"cs=map.contourf(x, y, data, clevs, cmap=cmap)\n",
"\n",
"map.drawparallels(parallels,labels=[1,0,0,0],color='k', fontsize=10, fontweight='bold')\n",
"meri = map.drawmeridians(meridians,labels=[0,0,0,1],color='k', fontsize=10, fontweight='bold')\n",
"\n",
"cb = map.colorbar(cs, 'bottom', size='5%', pad='10%')\n",
"\n",
"cb.set_label('Elevation (m)', fontsize=12, fontweight='bold')\n",
"cb.ax.tick_params(labelsize=10)\n",
"\n",
"plt.show()"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.5.2"
}
},
"nbformat": 4,
"nbformat_minor": 2
}
Write Preview
Loading…
Cancel
Save