feat(loaders): Set default PhysicalSizeUnit to µm (#728)

hms-dbmi · Nov 15, 2023 · a1a8007 · a1a8007
1 parent 51aca92
commit a1a8007
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Showing 2 changed files with 9 additions and 4 deletions.
diff --git a/.changeset/serious-plants-visit.md b/.changeset/serious-plants-visit.md
@@ -0,0 +1,5 @@
+---
+'@vivjs/loaders': patch
+---
+
+feat: Set default PhysicalSizeUnit to µm
diff --git a/packages/loaders/src/omexml.ts b/packages/loaders/src/omexml.ts
@@ -130,9 +130,9 @@ const PixelsSchema = z
       PhysicalSizeY: z.coerce.number().optional(),
       PhysicalSizeZ: z.coerce.number().optional(),
       SignificantBits: z.coerce.number().optional(),
-      PhysicalSizeXUnit: UnitsLengthSchema.optional(),
-      PhysicalSizeYUnit: UnitsLengthSchema.optional(),
-      PhysicalSizeZUnit: UnitsLengthSchema.optional(),
+      PhysicalSizeXUnit: UnitsLengthSchema.optional().default('µm'),
+      PhysicalSizeYUnit: UnitsLengthSchema.optional().default('µm'),
+      PhysicalSizeZUnit: UnitsLengthSchema.optional().default('µm'),
       BigEndian: z
         .string()
         .transform(v => v.toLowerCase() === 'true')
@@ -184,7 +184,7 @@ export function fromString(str: string) {
           .map(name => {
             const size = img.Pixels[`PhysicalSize${name}` as const];
             const unit = img.Pixels[`PhysicalSize${name}Unit` as const];
-            return size && unit ? `${size} ${unit}` : '-';
+            return size ? `${size} ${unit}` : '-';
           })
           .join(' x ');