I always get a java.lang.StackOverflowError when executing a tree step.
Here is an example from the Music Festival sample data:
def g = graph.traversal(); g.V().has("genre", "Folk").out().tree();
Gives me the following error:
Error: Error encountered evaluating script def g = graph.traversal(); g.V().has("genre", "Folk").out().tree(); with reason java.lang.StackOverflowError
I have noticed that the gremlin version on IBM Graph is:
3.0.1-incubating
There have been some other posts stating that there is a bug in this version with respect to the tree step.
At this point I have two questions
Will IBM Graph be upgrading to a version of Gremlin that fixes this issue?
Is there any workaround for getting a tree representation of a traversal path?
#yo3jones yes IBM Graph will be upgrading to a later version of Gremlin that fixes that.
For now the only suggestion the folks in TP are making is to use path and restruct the result as a tree on the client side. Checkout this JIRA https://issues.apache.org/jira/browse/TINKERPOP-732
Related
enter image description hereWhy does the fuction Utf8Helper::setCollatorLanguage in arangodb sdk always return false?
It is at fault ERROR ERROR in the Collator: : createInstance < > : U_FILE_ACCESS_ERRORï¼›And It's lead to failed to initialise ICU; ICU_DATA= "F:\\work_lc\\arangodb-2.6\\Build32\\bin\\..\\\\share\\arangodb\\";This project where to copy from others, it can be used, but i'm not,I just wonder what configuration file not produced
You need to make shure, ICU is able to load its locale database.
See our cookbook regarding windows compilation how to achieve this.
Please note that ArangoDB 2.6 is way out of date, and you should work with a more recent version.
More recent versions will also provide better error messages in such situations via the windows event log.
I'm trying to load the example Graph of the Gods file that is distributed with Titan with the loadGraphSON function. I have executed the following steps and are working with Titan 0.5.4 with Hadoop 2.
Downloaded and unpacked a fresh Titan 0.5.4 with Hadoop 2.
Started Titan, Rexster, Cassandra, ElasticSearch with the command bin/titan.sh -c cassandra-es start
Run Gremlin with: bin/gremlin.sh
Open a new TitanFactory instance with the required settings: g = TitanFactory.open('conf/titan-cassandra-es.properties')
Then I tried to load the Graph of the Gods from the examples-directory with g.loadGraphSON("examples/graph-of-the-gods")
I do not get an error, but trying to show all vertices with g.V returns nothing. Am I executing the rights steps here, or am I doing something wrong?
Note that this question was answered on the Aurelius Graphs Mailing List:
https://groups.google.com/d/msg/aureliusgraphs/FiCvX891r6g/BkmWj3xc3ikJ
Basically:
1) the filename should be examples/graph-of-the-gods.json
2) you can also use GraphOfTheGodsFactory.load(g) which will also create indexes and type definitions
I'd say the second point above would be the preferred manner in which to load Graph of the Gods.
If you're not setting up a Titan Hadoop job, you could try using the Blueprints GraphSON reader to load graph data. See https://github.com/tinkerpop/blueprints/wiki/GraphSON-Reader-and-Writer-Library
In a Gremlin shell it looks a bit like this:
inStream = new FileInputStream("../examples/graph-of-the-gods.json")
GraphSONReader.inputGraph(g, inStream)
I came back to a Unity game that I was working on a couple of weeks ago, using version 4.6.1. After upgrading to version 5.0 and converting the project, there was an error in the following line:
Sprite.Create(plusTexture, Rect(toRightBoundry, 0, plusTexture.width, plusTexture.height), rightPos);
The image is imported as a single Sprite , 150 pixels per unit, pivoted at the center, using a bilinear filter. The import mode is compression , with a max size of 1024. Given those conditions and the fact that this piece of code was not altered since the working version and also after confirming that all values passed are valid, the following error is found at runtime:
"!hasError"
I have researched in the forums and cannot find a solution for this, mostly topics that end in the developers asking for a bug report. Is anyone familiar with how to solve this issue ?
Thanks in advance and have a nice day
it looks like an error do to unresolved merge conflicts from sprite atlas meta file of the resource file. We were getting a few funny named errors lie"aabb is not define" "!hasError" and something WIPPE. On of them was due to artist not resolving conflicts on a mesh meta file
I am trying to use the Sphinx4 library for speech recognition, but I cannot seem to figure out the correct combination of acoustic model-dictionary-language model. I have tried out various combinations and I get a different error every time.
I am trying to follow the tutorial on http://cmusphinx.sourceforge.net/wiki/tutorialsphinx4. I do not have a config.xml as I would if I was using ConfigurationManager instead of Configuration, because there is no perceivable way of passing the location of the config file to the Configuration itself (ConfigMgr takes it as an argument to the constructor); and that might be my problem right there. I just do not know how to point to one, and since the tutorial says "It is possible to configure low-level components of the application through XML file although you should do that ONLY IF you understand what is going on.", I assume having a config.xml file is not compulsory.
Combining the latest dictionary (7b - obtained from Sourceforge) with the latest acoustic model (cmusphinx-en-us-5.2.tar.gz - from SF again) and the language model (cmusphinx-5.0-en-us.lm.gz - from SF again) results in NullPointerException in startRecognition. The issue is similar to the problem here: sphinx-4 NullPointerException at startRecognition, but the link given in the answer no longer works. I obtained 0.7a from SF (since that is the dict the link seems to point at), but I am getting even earlier in the execution Error loading word: ;;; when I use that one. I tried downloading latest models and dict from the Github repo, that results in java.lang.IndexOutOfBoundsException: Index: 16128, Size: 16128.
Any help is much appreciated!
You need to use latest code from github
http://github.com/cmusphinx/sphinx4
as described by tutorial
http://cmusphinx.sourceforge.net/wiki/tutorialsphinx4
Correct models (en-us) are already included, you should not replace anything. You should not configure any XML files, use samples as provided in the sources.
i am trying to read dicom images without using imageviewer and i came across VtkGdmReader.. when i am trying to execute it, its giving me an error:
code => vtkGdmReader example
error C2039: 'SetInput' : is not a member of 'vtkTexture'
error C2039: 'SetInput' : is not a member of 'vtkPolyDataMapper'
please can any one tell me why am i facing this problem, is this error related to vtk version ? if so then how can i go about it ?
please help me resolving the problem..
As said in the comments, this error is related to the VTK version. SetInput() was removed in VTK 6.
You can either work in VTK 5 or update the code. If you decide to update it, this error gets fixed by replacing SetInput() with either SetInputData() or SetInputConnection() with a few modifications. You should use SetInputConnection() if you want the filters to go through the pipeline.
As an example of fixing the errors you mentioned, you should replace the following lines in the code you provided:
VTKtexture->SetInput(ima); and
VTKplaneMapper->SetInput(VTKplane->GetOutput());
to:
VTKtexture->SetInputConnection(reader->GetOutputPort()); and
VTKplaneMapper->SetInputConnection(VTKplane->GetOutputPort());
In the second modification (VTKplaneMapper), note that we just changed GetOutput() to GetOutputPort(), while in the first one (VTKtexture) we completely changed the argument passed to SetInputConnection(). That happens because data objects (such as ima) no longer have dependency on pipeline objects (such as algorithms and executives). In this case, we give the algorithm that generated that data object as the argument - if you look for it, you can see the line vtkImageData* ima = reader->GetOutput();, you just have to replace GetOutput() by GetOutputPort() as we did in the second modification.
I recommend looking into the VTK Wiki's VTK 6 Migration pages (and guide) for more information on this error and other errors that you might run into.