Solution
To know the type of elements in a cluster, we can base on the Type Descriptor of the elements in the cluster. We can see how to get the Type descriptor programmatically in the next picture:
Once we have the Type Descriptor we will know what kind of data is in our cluster using the next table:
| Data Type | Type Descriptor (numbers in hexadecimal) |
|---|
| 8-bit Integer | 0004 xx01 |
| 16-bit Integer | 0004 xx02 |
| 32-bit Integer | 0004 xx03 |
| 64-bit Integer | 0004 xx04 |
| Unsigned 8-bit Integer | 0004 xx05 |
| Unsigned 16-bit Integer | 0004 xx06 |
| Unsigned 32-bit Integer | 0004 xx07 |
| Unsigned 64-bit Integer | 0004 xx08 |
| Single-Precision, Floating-Point Number | 0004 xx09 |
| Double-Precision, Floating-Point Number | 0004 xx0A |
| Extended-Precision, Floating-Point Number | 0004 xx0B |
| Complex Single-Precision, Floating-Point Number | 0004 xx0C |
| Complex Double-Precision, Floating-Point Number | 0004 xx0D |
| Complex Extended-Precision, Floating-Point Number | 0004 xx0E |
| Enumerated 8-bit Integer | <nn>xx15 <k><k pstrs> |
| Enumerated 16-bit Integer | <nn>xx16 <k><k pstrs> |
| Enumerated 32-bit Integer | <nn>xx17 <k><k pstrs> |
| Single-Precision Physical Quantity | <nn>xx19 <k><k base-exp> |
| Double-Precision Physical Quantity | <nn>xx1A <k><k base-exp> |
| Extended-Precision Physical Quantity | <nn>xx1B <k><k base-exp> |
| Complex Single-Precision Physical Quantity | <nn>xx1C <k><k base-exp> |
| Complex Double-Precision Physical Quantity | <nn>xx1D <k><k base-exp> |
| Complex Extended-Precision Physical Quantity | <nn>xx1E <k><k base-exp> |
| Boolean | 0004 xx21 |
| String | 0008 xx30 <dim> |
| Path | 0008 xx32 <dim> |
| Picture | 0008 xx33 <dim> |
| Array | <nn>xx40 <k dims><element type descriptor> |
| Cluster | <nn>xx50 <k elems><element type descriptors> |
| Waveform | <nn>xx54 <waveform type><element type descriptors> |
| Refnum | <nn> <refnum type code> |
| Variant | <nn>xx53 |
If you want to know more about LabVIEW Type descriptors please check Related Links section