fix(ts): fix matrix type for matrix.x.data: [null, null, null]
diff --git a/src/coord/matrix/MatrixModel.ts b/src/coord/matrix/MatrixModel.ts
index bcaae24..37fb1d5 100644
--- a/src/coord/matrix/MatrixModel.ts
+++ b/src/coord/matrix/MatrixModel.ts
@@ -169,7 +169,7 @@
// Do not use type `OrdinalRawValue` here. Number input is forbiden due to the possible confusion.
// e.g., if `matrix.x.data: [1, 2, 3]` is allowed, then querying `coord: [1, null]` will actually get
// the second column, since number represents the index (i.e. `MatrixXYLocator` or `OrdinalNumber`).
- value?: string;
+ value?: string | NullUndefined;
// column width (for x dimension) or row height (for y dimension).
// If not specified (null/undefined), auto calculate it.
// Only available on leaves, to avoid unnecessary complex.
