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Sudan Darfur data and mapping #387

Merged
merged 28 commits into from
Mar 18, 2024
Merged

Sudan Darfur data and mapping #387

merged 28 commits into from
Mar 18, 2024

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ivanzvonkov
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@ivanzvonkov ivanzvonkov commented Feb 15, 2024

Datasets

This PR processes the latest data from CEO as of 2024-02-14 for Sudan Darfur.

The anonymized reference samples used in GEE are saved directly in maps/Sudan folder:

Reference Sample Distribution

I investigated label distributions across different regions and years here: https://github.com/nasaharvest/crop-mask/blob/update-Sudan-data/maps/Sudan/Darfur_2022_2023_label_distribution.ipynb
Here's a summary table
image

New 2022 Mask (V3)

I used 40% of points from GedarefDarfurAlJazirah2022 to train the model, and 60% for evaluation.
The mask was created with this script: https://github.com/nasaharvest/crop-mask/blob/update-Sudan-data/maps/Sudan/Darfur_2022_mask
The asset is stored here: https://code.earthengine.google.com/?asset=users/izvonkov/Sudan/Darfur2022_cropmask_v3
The script now outputs per region confusion matrices (unweighted by area)
image

New 2023 Mask (V4)

Used 40% of points GedarefDarfurAlJazirah2023 to train model, and 60% for evaluation.
Added more crop corrective labels to this one too.
The mask was created with this script: https://github.com/nasaharvest/crop-mask/blob/update-Sudan-data/maps/Sudan/Darfur_2023_mask
The asset is stored here: https://code.earthengine.google.com/?asset=users/izvonkov/Sudan/Darfur2023_cropmask_v4
Here are the confusion matrices for this one
image
Map has a little bit of trouble with West Darfur in this year.

Area Estimation + Confidence Interval in GEE

I thought it'd be convenient to compute area in GEE to speed up reporting.
Initial script here: https://github.com/nasaharvest/crop-mask/blob/update-Sudan-data/maps/Sudan/Darfur_area_estimate
This script could use a serious review

Area Estimate Output

  • Sample based generally matches earlier result
  • CIs are pretty big
    image

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@ivanzvonkov
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Forgot to mention 2023 V4 now uses data starting from March 2023

@hannah-rae
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@ivanzvonkov Do you plan to update this with your new area estimation GEE code?

@ivanzvonkov ivanzvonkov merged commit 4c04f2a into master Mar 18, 2024
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@ivanzvonkov ivanzvonkov deleted the update-Sudan-data branch March 18, 2024 16:21
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3 participants