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Add an option for a browser link column #23

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Add an option for a browser link column #23

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d748fd0
Adds an alternate link
m-mohr Jul 27, 2023
92a09cc
Code review
m-mohr Jul 31, 2023
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33 changes: 30 additions & 3 deletions stac_geoparquet/stac_geoparquet.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@
STAC_ITEM_TYPES = ["application/json", "application/geo+json"]

SELF_LINK_COLUMN = "self_link"
BROWSER_LINK_COLUMN = "browser_link"


def _fix_array(v):
Expand All @@ -31,7 +32,9 @@ def _fix_array(v):


def to_geodataframe(
items: Sequence[dict[str, Any]], add_self_link: bool = False
items: Sequence[dict[str, Any]],
add_self_link: bool = False,
add_browser_link: bool = False,
) -> geopandas.GeoDataFrame:
"""
Convert a sequence of STAC items to a :class:`geopandas.GeoDataFrame`.
Expand All @@ -43,6 +46,8 @@ def to_geodataframe(
----------
items: A sequence of STAC items.
add_self_link: Add the absolute link (if available) to the source STAC Item as a separate column named "self_link"
add_browser_link: Add an absolute link to an alternate HTML representation of the source STAC Item (if available)
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I think that this should explicitly document the conditions for this link being exracted:

  • The relation type must be alternate
  • The media type must be text/html
  • The href must be absolute (or whatever we're checking for. Fully qualified domain name?)

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Done :-)

as a separate column named "browser_link"
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I think sphinx wants subsequent lines indented a bit. Maybe 3 spaces.

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Added 3 spaces (but I'm not sure it has the intended effect?!).


Returns
-------
Expand All @@ -55,6 +60,7 @@ def to_geodataframe(
if k in item2:
raise ValueError("k", k)
item2[k] = v

if add_self_link:
self_href = None
for link in item["links"]:
Expand All @@ -66,6 +72,19 @@ def to_geodataframe(
self_href = link["href"]
break
item2[SELF_LINK_COLUMN] = self_href

if add_browser_link:
browser_href = None
for link in item["links"]:
if (
link["rel"] == "alternate"
and link["type"] == "text/html"
and urlparse(link["href"]).netloc
):
browser_href = link["href"]
break
item2[BROWSER_LINK_COLUMN] = browser_href

items2.append(item2)

# Filter out missing geoms in MultiPolygons
Expand Down Expand Up @@ -111,7 +130,15 @@ def to_geodataframe(
columns.remove(col)

gdf = pd.concat([gdf[columns], gdf.drop(columns=columns)], axis="columns")
for k in ["type", "stac_version", "id", "collection", SELF_LINK_COLUMN]:
string_columns = [
"type",
"stac_version",
"id",
"collection",
SELF_LINK_COLUMN,
BROWSER_LINK_COLUMN,
]
for k in string_columns:
if k in gdf:
gdf[k] = gdf[k].astype("string")

Expand Down Expand Up @@ -142,7 +169,7 @@ def to_dict(record: dict) -> dict:
for k, v in record.items():
v = _fix_array(v)

if k == SELF_LINK_COLUMN:
if k == SELF_LINK_COLUMN or k == BROWSER_LINK_COLUMN:
continue
elif k in top_level_keys:
item[k] = v
Expand Down