Skip to main content
Became Hot Network Question
Became Hot Network Question
naming
Source Link
Vince
  • 20.3k
  • 16
  • 48
  • 65

How to check if a value in one geopandasGeoPandas df is in another geopandasGeoPandas df but avoiding iterating over each row

I have two dataframes, one with line features and another one with point features. Each point has the id of an object in the linefeatures-dataset as a value in a column.

Now I need to calculate the minimal distance between each point and its relevant line. For this I have to get the line-id from the point feature and then search it in the line-dataframe, and only then calculate the distance between the two geometries by using geopandas-methodGeoPandas method 'distance' like:

def min_distance(point, lines):
    return lines.distance(point).min()

df_points['min_dist_to_lines'] = df_points.geometry.apply(min_distance, args=(df_lines,))

However, before that, I need to check for the line ids. Is there a way to do this efficiently, without iterating both dfs? I have a modest size of data and can imagine, that the iterating will slow down the processing.

How to check if a value in one geopandas df is in another geopandas df but avoiding iterating over each row

I have two dataframes, one with line features and another one with point features. Each point has the id of an object in the linefeatures-dataset as a value in a column.

Now I need to calculate the minimal distance between each point and its relevant line. For this I have to get the line-id from the point feature and then search it in the line-dataframe, and only then calculate the distance between the two geometries by using geopandas-method 'distance' like:

def min_distance(point, lines):
    return lines.distance(point).min()

df_points['min_dist_to_lines'] = df_points.geometry.apply(min_distance, args=(df_lines,))

However, before that, I need to check for the line ids. Is there a way to do this efficiently, without iterating both dfs? I have a modest size of data and can imagine, that the iterating will slow down the processing.

How to check if a value in one GeoPandas df is in another GeoPandas df but avoiding iterating over each row

I have two dataframes, one with line features and another one with point features. Each point has the id of an object in the linefeatures-dataset as a value in a column.

Now I need to calculate the minimal distance between each point and its relevant line. For this I have to get the line-id from the point feature and then search it in the line-dataframe, and only then calculate the distance between the two geometries by using GeoPandas method 'distance' like:

def min_distance(point, lines):
    return lines.distance(point).min()

df_points['min_dist_to_lines'] = df_points.geometry.apply(min_distance, args=(df_lines,))

However, before that, I need to check for the line ids. Is there a way to do this efficiently, without iterating both dfs? I have a modest size of data and can imagine, that the iterating will slow down the processing.

deleted 24 characters in body
Source Link
i.i.k.
  • 1.9k
  • 10
  • 14

I have two dataframes, one with line features and another one with point features. Each point has the id of an object in the linefeatures-dataset as a value in a column.

Now I need to calculate the minimal distance between each point and its relevant line, so by the line-ID. For this I have to checkget the line-id infrom the relevant point data setfeature and then search it in the line-dataframe for the relevant, and only then calculate the distance between the two geomtiesgeometries by using the geopandas-method 'distance' like:

def min_distance(point, lines):
    return lines.distance(point).min()

df_points['min_dist_to_lines'] = df_points.geometry.apply(min_distance, args=(df_lines,))

However, before that, I need to check for the line ids. Is there a way to do this efficiently, without iterating both dfs? I have a modest size of data and can imagine, that the iterating will slow down the processing.

I have two dataframes, one with line features and another one with point features. Each point has the id of an object in the linefeatures-dataset as a value in a column.

Now I need to calculate the minimal distance between each point and its relevant line, so by the line-ID. For this I have to check the line-id in the relevant point data set and then search the line-dataframe for the relevant, and only then calculate the distance between the two geomties by using the geopandas like:

def min_distance(point, lines):
    return lines.distance(point).min()

df_points['min_dist_to_lines'] = df_points.geometry.apply(min_distance, args=(df_lines,))

However, before that, I need to check for the line ids. Is there a way to do this efficiently, without iterating both dfs? I have a modest size of data and can imagine, that the iterating will slow down the processing.

I have two dataframes, one with line features and another one with point features. Each point has the id of an object in the linefeatures-dataset as a value in a column.

Now I need to calculate the minimal distance between each point and its relevant line. For this I have to get the line-id from the point feature and then search it in the line-dataframe, and only then calculate the distance between the two geometries by using geopandas-method 'distance' like:

def min_distance(point, lines):
    return lines.distance(point).min()

df_points['min_dist_to_lines'] = df_points.geometry.apply(min_distance, args=(df_lines,))

However, before that, I need to check for the line ids. Is there a way to do this efficiently, without iterating both dfs? I have a modest size of data and can imagine, that the iterating will slow down the processing.

Source Link
i.i.k.
  • 1.9k
  • 10
  • 14

How to check if a value in one geopandas df is in another geopandas df but avoiding iterating over each row

I have two dataframes, one with line features and another one with point features. Each point has the id of an object in the linefeatures-dataset as a value in a column.

Now I need to calculate the minimal distance between each point and its relevant line, so by the line-ID. For this I have to check the line-id in the relevant point data set and then search the line-dataframe for the relevant, and only then calculate the distance between the two geomties by using the geopandas like:

def min_distance(point, lines):
    return lines.distance(point).min()

df_points['min_dist_to_lines'] = df_points.geometry.apply(min_distance, args=(df_lines,))

However, before that, I need to check for the line ids. Is there a way to do this efficiently, without iterating both dfs? I have a modest size of data and can imagine, that the iterating will slow down the processing.