Handle null output case for vlm chart mxmn

2022-04-23 15:33:40 -04:00 · 2022-04-23 15:33:40 -04:00 · a752a22a4b
parent 55606cffbb
commit a752a22a4b
1 changed files with 3 additions and 1 deletions
--- a/piker/ui/_display.py
+++ b/piker/ui/_display.py
@ -104,7 +104,9 @@ def chart_maxmin(

    mx_vlm_in_view = 0
    if vlm_chart:
-        _, mx_vlm_in_view = vlm_chart.maxmin()
+        out = vlm_chart.maxmin()
+        if out:
+            _, mx_vlm_in_view = out

    return (
        last_bars_range,