fix NaN不应返回有值

linlang171 · linlang171 · commit 49d45b92dd07 · 2025-09-02T19:37:50.000+08:00
debug 20265
diff --git a/src/scale/helper.ts b/src/scale/helper.ts
@@ -151,7 +151,7 @@ function normalize(
     // Dont use optional arguments for performance consideration here.
 ): number {
     if (extent[1] === extent[0]) {
-        return 0.5;
+        return isNaN(val) ? NaN : 0.5;
     }
     return (val - extent[0]) / (extent[1] - extent[0]);
 }

Original file line number	Diff line number	Diff line change
`@@ -151,7 +151,7 @@ function normalize(`
`151`	`151`	`// Dont use optional arguments for performance consideration here.`
`152`	`152`	`): number {`
`153`	`153`	`if (extent[1] === extent[0]) {`
`154`		`- return 0.5;`
	`154`	`+ return isNaN(val) ? NaN : 0.5;`
`155`	`155`	`}`
`156`	`156`	`return (val - extent[0]) / (extent[1] - extent[0]);`
`157`	`157`	`}`