Fix legend

seisman · seisman · commit 146e430ec74c · 2024-09-11T10:03:38.000+08:00
diff --git a/pygmt/src/legend.py b/pygmt/src/legend.py
@@ -94,6 +94,8 @@ def legend(
             specfile = ""
         case kind if kind == "file" and not is_nonstr_iter(spec):
             specfile = spec
+        case "stringio":
+            specfile = spec
         case _:
             raise GMTInvalidInput(f"Unrecognized data type: {type(spec)}")
 
