geopandas

问题 Here is a sample of the data I am trying to visualize Prince Edward Island 2.333 Manitoba 2.529 Alberta 2.6444 British Columbia 2.7902 Saskatchewan 2.9205 Ontario 3.465 New Brunswick 3.63175 Newfoundland and Labrador 3.647 Nova Scotia 4.25333333333 Quebec 4.82614285714 Nunavut NaN Yukon NaN Northwest Territories NaN I want to visualize the data by colouring each province according to the number it is associated with. When I do this, the Nan's are coloured like the minimum value of the

问题 I was trying to compare the size of two polygons by plotting them in one figure. For example, I want to put Kansas on top of Texas. however, because the two polygons share the same CRS, so when I was trying to plot them in one figure, they are separated with each one stay at their positions based on the CRS. I was wondering how to change my code (see below) to let Kansas (polygon) stay in Texas (polygon). Thanks. kansas = gpd.read_file("kansas.shp") texas = gpd.read_file("texas.shp") ax =

问题 I am new at spatial analysis, but I cant find this answer anywhere. I have a list of post codes in CRS coordinates, latitude and longitude, and London's Boroughs shape file in OSN coordinates, and I would like to map them together, but this is what happens. This is the head of the postcodes london_post_codes.head() Out[81]: postcode latitude longitude 0 WD6 1GS 51.658021 -0.255663 1 WD17 1LA 51.660366 -0.397525 2 WC2N 6LE 51.509413 -0.121676 3 WC2N 6NA 51.508363 -0.124454 4 WC2N 6ND 51.508216

问题 I am new at spatial analysis, but I cant find this answer anywhere. I have a list of post codes in CRS coordinates, latitude and longitude, and London's Boroughs shape file in OSN coordinates, and I would like to map them together, but this is what happens. This is the head of the postcodes london_post_codes.head() Out[81]: postcode latitude longitude 0 WD6 1GS 51.658021 -0.255663 1 WD17 1LA 51.660366 -0.397525 2 WC2N 6LE 51.509413 -0.121676 3 WC2N 6NA 51.508363 -0.124454 4 WC2N 6ND 51.508216

问题 I am plotting a shape file with Geopandas. Additionally im Adding Points of a dataframe (see picture). Now im trying to add a legend (at the right of the original plot) for the point. I dont really know how to do that! Plot import pandas as pd import numpy as np import matplotlib.pyplot as plt import geopandas as gpd import test variable = 'RTD_rtd' df = test.getdataframe() gdf = gpd.GeoDataFrame( df, geometry=gpd.points_from_xy(df.NP_LongDegree, df.NP_LatDegree)) fp = "xxx" map_df = gpd.read

问题 I am plotting a shape file with Geopandas. Additionally im Adding Points of a dataframe (see picture). Now im trying to add a legend (at the right of the original plot) for the point. I dont really know how to do that! Plot import pandas as pd import numpy as np import matplotlib.pyplot as plt import geopandas as gpd import test variable = 'RTD_rtd' df = test.getdataframe() gdf = gpd.GeoDataFrame( df, geometry=gpd.points_from_xy(df.NP_LongDegree, df.NP_LatDegree)) fp = "xxx" map_df = gpd.read

问题 I would like to create an accurate buffer of 5 miles around a coordinate, my current code is: cpr_gdf['p_buffer']=cpr_gdf['coordinates'].buffer(5*(1/60)) The coordinates column was created with this code: cpr_df['coordinates']=list(zip(cpr_df.sample_longitude_decimal,cpr_df.sample_latitude_decimal)) cpr_df['coordinates']=cpr_df['coordinates'].apply(Point) cpr_gdf=gpd.GeoDataFrame(cpr_df,geometry='coordinates',crs={'init' :'epsg:4326'}) Thanks for any help! 回答1: You need to convert to an equal

问题 Using this map of NYC I'd like to change Manhattan to be bright blue. But when I change the individual patch color of Manhattan all the other patch colors change too. This was unexpected to me. How do you change the color of one individual patch? from matplotlib import pyplot as plt import geopandas as gpd nybb = gpd.GeoDataFrame.from_file('nybb.shp') nybb_plot = nybb.plot() for p_ny in nybb_plot.patches: p_ny.set_color("#111111") p_ny.set_alpha(0.6) for line in nybb_plot.lines: line.set

问题 Using this map of NYC I'd like to change Manhattan to be bright blue. But when I change the individual patch color of Manhattan all the other patch colors change too. This was unexpected to me. How do you change the color of one individual patch? from matplotlib import pyplot as plt import geopandas as gpd nybb = gpd.GeoDataFrame.from_file('nybb.shp') nybb_plot = nybb.plot() for p_ny in nybb_plot.patches: p_ny.set_color("#111111") p_ny.set_alpha(0.6) for line in nybb_plot.lines: line.set

问题 Using this map of NYC I'd like to change Manhattan to be bright blue. But when I change the individual patch color of Manhattan all the other patch colors change too. This was unexpected to me. How do you change the color of one individual patch? from matplotlib import pyplot as plt import geopandas as gpd nybb = gpd.GeoDataFrame.from_file('nybb.shp') nybb_plot = nybb.plot() for p_ny in nybb_plot.patches: p_ny.set_color("#111111") p_ny.set_alpha(0.6) for line in nybb_plot.lines: line.set