I am sorry, but it seems that I have a general misunderstanding in how
to implement a writer. I actually took vtkImageWriter as a guide to
writing some filter that takes an image as input and writes something to
the disk. Everything seems fine, but I can't test any further since the
RequestData method isn't called at all when I use the filter in the
Python Shell (I cannot acces it anywhere else by the way). I attached my
xml files.
When using imaging filters in Python you would write something like
this, after loading a volume:
smooth = GaussianSmooth3D()
Show()
With my writer, I am trying
writer = MeasureObjects()
Show/Update//Execute/GoGoGo/Write/Save/DoSomething/ ...
Nothing happens. No call to RequestData, which has a vtkErrorMacro just
in the beginning that would show me that it was called.
Best regards,
Christian
Utkarsh Ayachit wrote:
You did change your proxy to be a "WriterProxy" or subclass instead of
"SourceProxy" right?
Utkarsh
On Wed, Apr 7, 2010 at 11:02 AM, Christian Werner
<[email protected]> wrote:
Hi!
Thanks for the quick reply. I made it a writer and I am now able to access
the plugin in Python. That's great, but somehow it doesn't execute. I can
now set the FileName (which I forgot to mention in the xml), but I can't get
it executed. The plugin is derived from vtkImageAlgorithm, but the
RequestData method does not seem to be called. How do I trigger it?
Best regards,
Christian
Utkarsh Ayachit wrote:
Christian,
Any reason why you are not making it a writer? To me it doesn't seem
anything different than that except looks like you are not explicitly
specifying the filename (is it hard coded?).
Utkarsh
On Wed, Apr 7, 2010 at 7:16 AM, Christian Werner
<[email protected]> wrote:
Hi!
I just wrote a nice mapper which writes some data to the disk, taking a
volume as input. I thought I could access it from the "Filters" menu, but
this wasn't possible. In future, this mapper should be called from the
python shell, but there, it isn't known either:
help(MeasureObjects)
Traceback (most recent call last):
File "<console>", line 1, in <module>
NameError: name 'MeasureObjects' is not defined
The plugin-manager however says, that he loaded my plugin ("...is
definetely
a paraview plugin..."). It shows up as "loaded" when verifying this.
The plugin is not intended as a writer or something like that, it just
looks
at the input and writes something to the disk which Paraview couldn't use
for anything anyway. Here is my xml content:
<ServerManagerConfiguration>
<!-- This is the server manager configuration XML. It defines the
interface
to
our new filter. As a rule of thumb, try to locate the configuration
for
a filter already in ParaView (in
Servers/ServerManager/Resources/*.xml)
that matches your filter and then model your xml on it -->
<ProxyGroup name="mappers">
<SourceProxy name="MeasureObjects" class="vtkMeasureObjects"
label="MeasureObjects">
<Documentation
long_help="Measures objects (connected components) in a volume."
short_help="Classical measuring.">
This is classical object measuring filter.
</Documentation>
<InputProperty
name="Input"
command="SetInputConnection">
<ProxyGroupDomain name="groups">
<Group name="sources"/>
<Group name="filters"/>
</ProxyGroupDomain>
<DataTypeDomain name="input_type">
<DataType value="vtkImageData"/>
</DataTypeDomain>
</InputProperty>
<!-- End MeasureObjects -->
</SourceProxy>
</ProxyGroup>
</ServerManagerConfiguration>
If I define the plugin as a filter then Paraview complains about not
having
an output port.
Any suggestions?
Best regards,
Christian
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<ServerManagerConfiguration>
<!-- This is the server manager configuration XML. It defines the interface to
our new filter. As a rule of thumb, try to locate the configuration for
a filter already in ParaView (in Servers/ServerManager/Resources/*.xml)
that matches your filter and then model your xml on it -->
<ProxyGroup name="writers">
<WriterProxy name="MeasureObjects" class="vtkMeasureObjects" label="MeasureObjects">
<Documentation
long_help="Measures objects (connected components) in a volume."
short_help="Classical measuring.">
This is classical object measuring filter.
</Documentation>
<InputProperty
name="Input"
command="SetInputConnection">
<ProxyGroupDomain name="groups">
<Group name="sources"/>
<Group name="filters"/>
</ProxyGroupDomain>
<DataTypeDomain name="input_type">
<DataType value="vtkImageData"/>
</DataTypeDomain>
</InputProperty>
<StringVectorProperty
name="FileName"
command="SetFileName"
number_of_elements="1"
default_values="unknown">
</StringVectorProperty>
<!-- End MeasureObjects -->
</WriterProxy>
</ProxyGroup>
</ServerManagerConfiguration>
<ParaViewWriters>
<Writer name="SVD-Writer"
extensions="svd"
file_description="svd Files">
</Writer>
</ParaViewWriters>
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