Informations about the components of an image object.
The operator ::get_channel_info gives information about the components of an image object. The following requests (Request) are currently possible:
'creator' Output of the names of the procedures which initially created
the component (not the object).
'type' Output of the type of image component ('byte', 'int1', 'int2',
'int4', 'real', 'direction', 'cyclic', 'complex', 'dvf', 'lut').
The component 0 is of type 'region' or 'xld'.
In the tuple Channel the numbers of the components about which
information is required are stated.
After carrying out ::get_channel_info, Information contains
a tuple of strings (one string per entry in Channel)
with the required information.
|
Object (input_object) |
object -> Hobject: HObject |
| Image object to be examined. | |
|
Request (input_control) |
string -> HTuple.char * |
| Required information about object components. | |
| Default value: 'creator' | |
| List of values: 'creator', 'type' | |
|
Channel (input_control) |
channel(-array) -> HTuple.long |
| Components to be examined (0 for region/XLD). | |
| Default value: 0 | |
| Suggested values: 0, 1, 2, 3, 4, 5, 6, 7, 8 | |
|
Information (output_control) |
string(-array) -> (HTuple.) char * |
| Requested information. | |
If the parameters are correct the operator ::get_channel_info returns the value H_MSG_TRUE. Otherwise an exception is raised.
Basic operators
