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[[_TOC_]]
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# VisIt
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Download [VisIt](https://visit-dav.github.io/visit-website/index.html) (an Open Source, interactive, scalable, visualization, animation and analysis tool) in version 3.3.x or higher. It, by default, supports W-DATA format.
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# Opening file
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## Opening file
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When opening the file you need to select metadata file of W-DATA format, i.e. file `*.wtxt`. An example is shown below.
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*Note*: When you select `*.wtxt` file and click open VisIt should automatically use `wdata` plugin, as it is by default assigned to `wtxt` file extension. You can also select it manually using the option `Open file as type` and selecting WData.
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# Example plot
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## Example plot
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Here you can download sample data here: [example-vortices.tar.gz](uploads/2ddded58f7b17f150a32eca65a0dce6f/example-vortices.tar.gz)
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To check if VisIt works correctly, try to open the example data:
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| ... | ... | @@ -28,3 +30,22 @@ You can also create a host file by using in VisIt: `Options->Host files`. |
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When a host file is provided to visit, assign to it the server should be visible on the list of hosts in `Open file` dialog box:
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# Opening remote files using `sshfs`
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As an alternative option, you can `sshfs` utility (`ssh file system`). With this tool, you can mount remote locations on your local computer. For example, the command below will mount the remote folder (`dwarf.if.pw.edu.pl:/home/gabrielw`) in the local folder (`/home/gabrielw/sshfs/dwarf/home`):
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```
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sshfs dwarf.if.pw.edu.pl:/home/gabrielw /home/gabrielw/sshfs/dwarf/home
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```
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This method is less efficient than working in client-server mode; however, it allows one to visualize data located on remote systems without an installed visit tool and without downloading the data.
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# Common problems
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## VisIt cannot find a suitable plugin when trying to open `wtxt` file.
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1. Check on the list of provided plugins (option `Open file as type` when opening file) if WData plugin is installed. If not, download version 3.3.x or higher or install the plugin manually; see [here](VisIt plugin compilation).
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2. There is a problem with permissions. Add read permission to your wdata set, for example by:
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```
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chmod a+r *
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```
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