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fix: raise ValueError on empty CNV HMM data instead of IndexError #1258

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fix: raise ValueError on empty CNV HMM data instead of IndexError #1258

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10 changes: 10 additions & 0 deletions malariagen_data/anoph/cnv_data.py
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Original file line number Diff line number Diff line change
Expand Up @@ -745,6 +745,11 @@ def plot_cnv_hmm_coverage_track(
debug("remove data where HMM is not called")
data = data.query("call_CN >= 0")

if len(data) == 0:
raise ValueError(
f"No CNV HMM data found for sample {sample_id!r} in region {region_prepped!r}."
)

debug("set up y range")
if y_max == "auto":
y_max_float = data["call_CN"].max() + 2
Expand Down Expand Up @@ -930,6 +935,11 @@ def plot_cnv_hmm_heatmap_track(
end = ds_cnv["variant_end"].values
n_windows, n_samples = cn.shape

if n_windows == 0:
raise ValueError(
f"No CNV HMM data found for region {region_prepped!r}."
)

debug("figure out X axis limits from data")
x_min = start[0]
x_max = end[-1]
Expand Down