Deltares / Deltares/imod-python

Add selection function to assign points to an existing geodataframe

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Dominant language
Python
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41
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21h 8m
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Description

In GitLab by @Huite on Oct 7, 2022, 11:51

This is currently a little cumbersome:

selection = imod.select.points_values(da, x=gdf.geometry.x, y=gdf.geometry.y)
df = selection.to_dataframe()
gdf["values"] = df["values"]

Would be nicer to do:

new_gdf = imod.select.points_values_geodataframe(da, gdf)

And since we read IPFs as dataframes:

new_df = imod.select.points_values_dataframe(da, df, x="x-coord", y="y-coord")

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start from imod.select.points_values and the GeoDataFrame and DataFrame usage shown in the issue. Trace how point selections are returned, then verify that the requested GeoDataFrame and DataFrame entry points produce objects with the sampled values attached to the supplied data.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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