pantierra/efast-phenocam-validation
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Checked on NoData pixels for NDVI calculation.

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This commit is contained in:
Felix Delattre 2026-01-11 00:44:34 +01:00
parent 6741433228
commit 51e1e32049
1 changed files with 8 additions and 0 deletions
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8
ndvi.py
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@ -43,6 +43,8 @@ def _get_ndvi_value(ndvi_file, site_position):
value = float(samples[0][0]) value = float(samples[0][0])
if value != 0 and not np.isnan(value): if value != 0 and not np.isnan(value):
return value return value
# Return the raw value even if 0 or NaN for diagnostic purposes
return value
except Exception: except Exception:
pass pass
return None return None
@ -63,6 +65,12 @@ def _create_timeseries_for_dir(output_dir, site_position, source_name):
ndvi_value = _get_ndvi_value(ndvi_file, site_position) ndvi_value = _get_ndvi_value(ndvi_file, site_position)
if ndvi_value is None: if ndvi_value is None:
print(f"[NDVI-{source_name}] Warning: Could not sample {filename}") print(f"[NDVI-{source_name}] Warning: Could not sample {filename}")
elif ndvi_value == 0:
print(f"[NDVI-{source_name}] Warning: Could not sample {filename} (NoData)")
ndvi_value = None # Set to None for timeseries
elif np.isnan(ndvi_value):
print(f"[NDVI-{source_name}] Warning: Could not sample {filename} (NaN)")
ndvi_value = None # Set to None for timeseries
timeseries.append({"date": date, "filename": filename, "ndvi": ndvi_value}) timeseries.append({"date": date, "filename": filename, "ndvi": ndvi_value})