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Frequently Asked Questions

edit] Can ParaView stream my data sets (process then out-of-core) ?

ParaView:FAQ - KitwarePublic
VTK has some useful streaming features that allow you to process a large data set without ever having to load the entire data set into memory. ParaView has not yet been set up to take advantage of this VTK feature. I would suggest creating a visualization in ParaView using a smaller/lower resolution data set. You could then save out the pipeline into a Tcl script, add a streaming filter and use VTK to process the large data set.
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edit] How about bittorrent for the data sets?

World Wind FAQ - World Wind Wiki
Because of the size of the data used, and the limited amount of data users download of the total available data, it is unlikely that p2p would make much of a dent in the problem of serving that data.
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Can I edit data sets on the site?

Many Eyes : FAQ
Currently you cannot edit data. If you need to correct a mistake, upload a new version of your file. The reason we don'tallow editing is that changes can make other people's comments an bookmarks obsolete.
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What is the Dublin Core data model?

DCMI Frequently Asked Questions (FAQ)
The basic Dublin Core data model is defined by its 15 elements and the relationships defined between the resource-of-interest and whatever other resource is "in-scope" for DC. In particular, the "Relation" and "source" elements are used to indicate a connection with another resource of any type. "Creator", "Contributor" and "Publisher" elements relate the present resource to a party who has some responsibility for it.
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How about data sets that can be used with GMT ?

GMT - Frequently Asked GMT Questions
Lots of data from the US national data centers (NOAA, USGS, NGDC, NEIC) can be used with GMT, and they are all freely available from these centers and individuals via the internet. For Unix/Windows CD-R compilations of several Gb of Earth and Ocean science data, see Geoware's GMT Companion CD-R and DVD-R products.
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edit] How does ParaView render when running in parallel ?

ParaView:FAQ - KitwarePublic
Sort first (collection): Small objects can be collected to the first node and rendered locally. In this mode, the polygons are collected only when the source generating them is modified. Although this collection might take time, it is done only once and rendering is fast. Sort last (distributed rendering): In this mode, first, each process renders their scene, then these scenes are composited using the depth buffer. This is done every render.
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edit] How do I add my own vtk filter/reader to ParaView?

ParaView:FAQ - KitwarePublic
Read http://public.kitware.com/pipermail/paraview/2003-September/000290.html Adding a filter is very similar to adding readers. Read ParaView/GUI/Client/Resources/Filters.xml and ParaView/Servers/ServerManager/Resources/filters.xml in the source distribution. These are the default filters config files for ParaView.
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edit] How do I compile ParaView for Mac OS X?

ParaView:FAQ - KitwarePublic
Run ccmake. Set BUILD_SHARED_LIBS to ON; set VTK_USE_CARBON to OFF; set VTK_USE_X to ON; check that CMAKE_CXX_COMPILER is set to c++ and that CMAKE_C_COMPILER is set to gcc. Also make sure that OPENGL_INCLUDE_DIR is set to a directory that contains GL/gl.h, and set OPENGL_gl_LIBRARY and OPENGL_glu_LIBRARY accordingly. Then configure and generate. To build ParaView 2.4 on Mac OS X 10.
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edit] How do I specify the list of machines in the render server in ParaView 2.2 and later?

ParaView:FAQ - KitwarePublic
The list of machines making up the render server (or data server if the render server is connecting to the data server) is now specified in a configuration XML file (*.pvx) instead of in a separate machines file. The format for this portion of the XML file is shown below. The "<Machine ... />" line is repeated for each machine in the render server (with the Name specified appropriately for each machine). <?xml version="1.
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edit] How do I specify cave parameters in ParaView 2.2 and later?

ParaView:FAQ - KitwarePublic
Cave parameter specification has been moved from a separate cave configuration file into the XML configuration file (*.pvx). The format for specifying cave parameters in the XML file is shown below. The parameters will be specified for the render server if you are using separate data and render servers; otherwise specify the cave parameters for the server. The "<Machine ..
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edit] What file formats does ParaView support?

ParaView:FAQ - KitwarePublic
ParaView files: This is the default file format for ParaView. The data set created by this reader may be of any type supported by ParaView (polygonal, uniform rectilinear, nonuniform rectilinear, curvilinear, or unstructured). The file extension is .pvd. This format supports spatially partitioned and multi-block data. ParaView can write data files in this format. There are no modifiable parameters for reading ParaView files unless the file contains multiple time steps.
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Where can I get real time data on Wisconsin stream and river conditions?

Frequently Asked Questions (FAQ) - WDNR
The U.S. Geological Survey maintains a Real-Time Streamflow Data [exit DNR] site that covers selected Wisconsin streams.
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What is edit stream type?

FAQ & Feedback
It shows output stream type. MPEG-1 system is multiplexed data of video and audio streams. MPEG-1 video CD is similar to MPEG-1 system but it conforms to Video CD format. MPEG-2 PS and TS are another forms of multiplexed streams of audio and video streams. In the case of MPEG video/audio, two separate video and audio streams are output. In the case of MPEG video, only video stream is output.
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Since the core hangs in the airflow stream, is it restrictive?

Stainless Works
We recently did some dyno testing at Wheel to Wheel in Michigan on Mark Stiewlows new 400 CID, 600 HP engine. With S-tube Stainless Works mufflers and complete exhaust system, we were down 1 hp at peak, but made more average torque and horsepower than with no mufflers. With a chambered muffler that is approximately 6 DB quieter than our first muffler, we were down about 15 flywheel HP compared to open headers.
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How fast is rdiff-backup? Can it be run on large data sets?

rdiff-backup FAQ
rdiff-backup can be limited by the CPU, disk IO, or available bandwidth, and the length of a session can be affected by the amount of data, how much the data changed, and how many files are present. That said, in the typical case the number/size of changed files is relatively small compared to that of unchanged files, and rdiff-backup is often either CPU or bandwidth bound, and takes time proportional to the total number of files.
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Can I stream data out of a firewall?

Magellan Professional GPS
Yes, if your IS team has given your iCGRS IP address specific permission to stream out of the firewall. If the iCGRS unit sits behind a firewall, ask your information system administrator to open the HTTPS port (443) of the iCGRS' IP address. Then computers outside of the firewall will be able to access the iCGRS unit from a browser with https://xxx.xxx.xxx URL. (where xxx.xxx.xxx is the iCGRS' IP address).
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edit] What does "Save Data" entry in the file menu do when you are running more than one process ?

ParaView:FAQ - KitwarePublic
When running one process, "Save Data" creates a file from the current data set in ParaView. When running more than one process, save data creates spatially distributed files. Each process writes its own data in a file. A single meta-file pointing to these pieces is also created.
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edit] How large is the data set? Is it available for download?

World Wind FAQ - World Wind Wiki
Collectively the data sets are around 4.6 Terabytes. As such they are not available as a full package for localized download. There are, however, several data sets available for download as cache packs.
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edit] Q: How can I write data on NTFS partitions?

Using FAQ - Knoppix Documentation Wiki
Knoppix 5 supports write access for NTFS partitions using libntfs and fuse. While preliminary results show generally good stability and a low likelihood of data corruption on the NTFS partition, these libraries are still beta and there is risk of data loss and disk corruption (back up your data first). Knoppix (and the Linux kernel) can read NTFS partitions just fine, the danger is only present when attempting to write to it.
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edit] I cannot see my data, what do I do?

ParaView:FAQ - KitwarePublic
You can press the reset-view button at the top left corner of the application. This will change the view to best display all of the visible data. You can also press the "Set View to Data" button on the individual data objects "Display" pages. This will change the view to show the data in that individual data object.
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Can I edit data?

FAQ
Yes, the "Basic" and "Advanced" version support full data entry although some features may not be available depending on the original source of the data. For example, the TMG Research Log and Roles and Witnesses are viewable on the device but cannot be changed.
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What is the difference between the FNL and CDC Reanalysis data sets?

NOAA ARL Frequently Asked Questions
Is there a sanctioned way of retrieving the GFS data 4 times a day? I don't want to use the READY web interface in an automated script. http://www.windguru.cz/ is a good example of what I want to do, but with a subset of data a balloonist would find useful. I have been using the GFS model data to get soundings to assist me in the running of advanced gliding courses in Australia.
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How are uncatalogued data sets handled?

arbutus software | Mainframe Integration, Mainframe Legacy D...
Uncatalogued data sets are generally not “visible” to Arbutus Analyzer or LegacyLink™ ad hoc processes. Uncatalogued data sets can be made available by allocating them in the session JCL and accessing them based on a DDNAME.
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How frequently are data sets updated?

FAQ's
The rate at which new series (or new years) of statistical data are added to existing data varies. To find this information about a specific data set, follow the instructions in question #3. Most descriptions of data sets include year(s) of available data.
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Are data sets available for my project?

MGIS Program, University of Calgary
In some cases data sets may be available from your supervisor, but you should not assume that this is the case. We do actively seek research projects with government and industry, and in many cases, data is provided. If there is a company or organization you would like to work with, it is worth approaching them to see if they are amenable to a partnership, where they provide the data, and you provide the analysis and results.
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When will my data sets expire?

QAS Support - FAQs - Data
This is different for every QuickAddress data set. Please refer to the Country Data Information section of the relevant Country Information Guide.
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How often are data sets updated by QAS?

QAS Support - FAQs - Data
This differs for every QuickAddress data set available, see data update frequencies for a complete overview of all update frequencies available. Alternatively, consult the relevant Country Information Guide for more detailed information.
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How about bittorrent for the data sets?

World Wind FAQ - World Wind Wiki
Because of the size of the data used, and the limited amount of data users download of the total available data, it is unlikely that p2p would make much of a dent in the problem of serving that data.
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