Hi Morgan,

It looks like yt installed correctly, actually. The 'yt' command line interface is a way to quickly examine datasets. As the help prompt you pasted indicates, you need to pair the 'yt' command with a subcommand in order to do anything. For example:

$ yt plot IsolatedGalaxy/galaxy0030/galaxy0030

Will make three plots of Density slices through the IsolatedGalaxy dataset (which you can download from yt-project.org/data). There are a number of other subcommands, you can get more information on them using 'yt --help'.

While yt's command line interface is good for looking quickly at a dataset, it's not so great for in-depth analysis. For that, you'll want to make an ipython notebook or python script using yt's python interface. Here is a brief introduction to using yt from python:

http://yt-project.org/doc/orientation/first_steps.html

Also see the bootcamp notebooks:

http://yt-project.org/doc/bootcamp.html

Hope that helps, please let us know if you have any more questions.

-Nathan

On Fri, Jun 21, 2013 at 10:56 AM, Morgan Presley <mpresley@princeton.edu> wrote:

I tried to install yt using the commands:

$ wget http://hg.yt-project.org/yt/raw/stable/doc/install_script.sh

$ bash install_script.sh

It seemed to install fine, but when I tried to run the activate script, I got the following error:

$ source /Users/mpresley/yt-x86_64/bin/activate

(yt-x86_64)anantes-651-1-49-78:~ mpresley$ yt
usage: yt [-h] [--config CONFIG] [--paste] [--paste-detailed] [--detailed]
[--rpdb] [--parallel]

{help,bootstrap_dev,bugreport,hop,hub_register,hub_submit,instinfo,load,mapserver,pastebin,pastebin_grab,upload_notebook,plot,render,rpdb,notebook,serve,reason,stats,update,upload_image}

...
yt: error: too few arguments

I tried just deleting the files and re-doing the installation, but I encountered the same error. I am installing on iOS 10.7.5 and have attached the install log. Thanks for any help.

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