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Python 2022-02-16 01:25:02
python dash plotly scatter draw a circle on the map
import plotly.express as px import geopandas as gpd import shapely.geometry import numpy as np import wget # download a zipped shapefile wget.download("https://plotly.github.io/datasets/ne_50m_rivers_lake_centerlines.zip") # open a zipped shap... Add solution -
Python 2021-10-17 06:02:04
python numpy how to empty array cycle
In [210]: %%timeit .....: l = [] .....: for i in xrange(1000): .....: l.append([3*i+1,3*i+2,3*i+3]) .....: l = np.asarray(l) .....: 1000 loops, best of 3: 1.18 ms per loop In [211]: %%timeit .....: a = np.empty((0,3), int) ........ Add solution -
Python 2021-10-05 15:14:04
scikit learn dataset into pandas dataframe
def answer_one(): import numpy as np import pandas as pd from sklearn.datasets import load_breast_cancer cancer = load_breast_cancer() data = np.c_[cancer.data, cancer.target] columns = np.append(cancer.feature_names, ["... Add solution -
Python 2021-09-16 11:17:03
labelencoder update
# train and test are pandas.DataFrame's and c is whatever column le = LabelEncoder() le.fit(train[c]) test[c] = test[c].map(lambda s: '<unknown>' if s not in le.classes_ else s) le.classes_ = np.append(le.classes_, '<unknown>') train[c] = le.t... Add solution -
Python 2021-09-08 19:59:03
how to append rows to a numpy matrix
import numpy as np arr = np.empty((0,3), int) print("Empty array:") print(arr) arr = np.append(arr, np.array([[10,20,30]]), axis=0) arr = np.append(arr, np.array([[40,50,60]]), axis=0) print("After adding two new arrays:") print(ar... Add solution -
Python 2021-08-30 05:06:02
plotly polyline map
import plotly.express as px import geopandas as gpd import shapely.geometry import numpy as np import wget # download a zipped shapefile wget.download("https://plotly.github.io/datasets/ne_50m_rivers_lake_centerlines.zip") # open a zipped shap... Add solution