Fix: improve log-scale error message wording

cbrethick · web-flow · commit d2d77e9f8d1f · 2026-04-04T18:44:08.000+05:30
diff --git a/lib/matplotlib/ticker.py b/lib/matplotlib/ticker.py
@@ -2484,8 +2484,7 @@ def tick_values(self, vmin, vmax):
                 vmin = self.axis.get_minpos()
 
             if vmin <= 0.0 or not np.isfinite(vmin):
-                raise ValueError(
-                    "Data has no positive values, and therefore cannot be log-scaled.")
+                raise ValueError("Data cannot be log-scaled because all values are <= 0.")
 
         if vmax < vmin:
             vmin, vmax = vmax, vmin
