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-rw-r--r--python/fatcat_web/graphics.py15
1 files changed, 8 insertions, 7 deletions
diff --git a/python/fatcat_web/graphics.py b/python/fatcat_web/graphics.py
index 56852627..5493d175 100644
--- a/python/fatcat_web/graphics.py
+++ b/python/fatcat_web/graphics.py
@@ -9,13 +9,14 @@ def ia_coverage_histogram(rows):
raw_years = [int(r[0]) for r in rows]
years = dict()
- for y in range(min(raw_years), max(raw_years)+1):
- years[int(y)] = dict(year=int(y), available=0, missing=0)
- for r in rows:
- if r[1]:
- years[int(r[0])]['available'] = r[2]
- else:
- years[int(r[0])]['missing'] = r[2]
+ if raw_years:
+ for y in range(min(raw_years), max(raw_years)+1):
+ years[int(y)] = dict(year=int(y), available=0, missing=0)
+ for r in rows:
+ if r[1]:
+ years[int(r[0])]['available'] = r[2]
+ else:
+ years[int(r[0])]['missing'] = r[2]
years = sorted(years.values(), key=lambda x: x['year'])