treat scientific numbers as string in getFieldType

src/mol-io/reader/cif/data-model.ts

@@ -300,7 +300,7 @@ export function getTensor(category: CifCategory, field: string, space: Tensor.Sp
 }
 
 export function getCifFieldType(field: CifField): Column.Schema.Int | Column.Schema.Float | Column.Schema.Str {
-    let floatCount = 0, scientificCount = 0, hasString = false, undefinedCount = 0;
+    let floatCount = 0, hasStringOrScientific = false, undefinedCount = 0;
     for (let i = 0, _i = field.rowCount; i < _i; i++) {
         const k = field.valueKind(i);
         if (k !== Column.ValueKind.Present) {
@@ -310,14 +310,11 @@ export function getCifFieldType(field: CifField): Column.Schema.Int | Column.Sch
         const type = getNumberType(field.str(i));
         if (type === NumberType.Int) continue;
         else if (type === NumberType.Float) floatCount++;
-        else if (type === NumberType.Scientific) scientificCount++;
-        else { hasString = true; break; }
+        else { hasStringOrScientific = true; break; }
     }
 
-    if (hasString || undefinedCount === field.rowCount) return Column.Schema.str;
     // numbers in scientific notation and plain text are not distinguishable
-    // keep as text if there is no other number type
-    if (scientificCount === field.rowCount) return Column.Schema.str;
-    if (floatCount > 0 || scientificCount > 0) return Column.Schema.float;
+    if (hasStringOrScientific || undefinedCount === field.rowCount) return Column.Schema.str;
+    if (floatCount > 0) return Column.Schema.float;
     return Column.Schema.int;
 }