AccessingtheBasemapObject.ipynb

AccessBasemapObject.ipynb

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      "source": "In a for loop situtation Basemap object cannot be querried by simple string passing. Objects are special data structure of python and it has to be querried by inbuilt classes such ```getattr``` based on [this](https://stackoverflow.com/questions/2612610/how-to-access-object-attribute-given-string-corresponding-to-name-of-that-attrib) for example below code compline there is no attribute named gridName in state2map"
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      "source": "for gridName in gridNames[0:1]:\n        fig     = plt.figure()\n        statepa = fig.add_subplot(111)\n        state2map = Basemap(epsg=24374,ellps = 'WGS84',llcrnrlon=stateshp3.minx[0]-0.2,llcrnrlat=stateshp3.miny[0]-0.2,urcrnrlon=stateshp3.maxx[0]+0.2,urcrnrlat=stateshp3.maxy[0]+0.2,lat_ts=0,resolution='i',suppress_ticks=True, ax=statepa)\n        state2map.readshapefile(gridName,gridName,color='none',zorder=2)\n        df_map1 = pd.DataFrame({'geometry': [Polygon(xy) for xy in state2map.gridName)]})",
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      "source": "Instead"
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      "source": "for gridName in gridNames[0:1]:\n        fig     = plt.figure()\n        statepa = fig.add_subplot(111)\n        state2map = Basemap(epsg=24374,ellps = 'WGS84',llcrnrlon=stateshp3.minx[0]-0.2,llcrnrlat=stateshp3.miny[0]-0.2,urcrnrlon=stateshp3.maxx[0]+0.2,urcrnrlat=stateshp3.maxy[0]+0.2,lat_ts=0,resolution='i',suppress_ticks=True, ax=statepa)\n        state2map.readshapefile(gridName,gridName,color='none',zorder=2)\n        df_map1 = pd.DataFrame({'geometry': [Polygon(xy) for xy in getattr(state2map, gridName)]})",
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      "source": "Doesn't complain and passes the attribute named as string gridName, it is good to know about the object in python by printing the compnents in it following [this](https://stackoverflow.com/questions/192109/is-there-a-function-in-python-to-print-all-the-current-properties-and-values-of) as follows to get only the attribute name in a object"
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      "source": "def dump(obj):\n      for attr in dir(obj):\n        print \"obj.%s\" % (attr)\n    \ndump(state2map)  ",
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      "source": "to get the value too"
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      "cell_type": "code",
      "source": "def dump(obj):\n      for attr in dir(obj):\n        print \"obj.%s = %s\" % (attr, getattr(obj, attr))",
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