Hi Junhwan, Sorry for the delayed response and the lack of documentation. multiplot_yt isn't working for you because you're overwriting the PlotCollection for each output. Plus, PlotCollections are designed to work on an individual output. There are two ways to use eps_writer with different outputs. 1. Write the images to disk, convert them to JPEG, and include them in the figure. I've uploaded the script that generated Figure 1 in http://arxiv.org/pdf/1011.2632.pdf to http://paste.yt-project.org/show/3135/ 2. Extract the plots from the PlotCollection into a list of plots. Then eps_writer can accept this list in the argument "yt_plots". I've uploaded an example to http://paste.yt-project.org/show/3135/ that generated Figure 5 in this paper http://arxiv.org/pdf/1206.1043.pdf I hope these examples clears things up, and let me know if this works for you. Cheers, John On 01/30/2013 04:32 PM, Jun-Hwan Choi wrote:

Hi yt user,

This question mostly goes to John Wise (maybe not). I try to use eps_writer module in the yt to generate a high-quality .eps figure. I attempt to make four phase plot (rho-T) from four different times (i.e. four different data output) But, I got the following error message:

File "Phase_eps.py", line 39, in <module> ep = eps.multiplot_yt(2,2,pc) File "/home/jhchoi/common/lib/python2.7/site-packages/yt-2.4-py2.7-linux-x86_64.egg/yt/visualization/eps_writer.py", line 1010, in multiplot_yt "x ncol(%d)." % (len(plot_col.plots), nrow, ncol) TypeError: not all arguments converted during string formatting

It look that there is a problem when I over write PlotCollection object for four different data output (or maybe not). How can I solve the issue? I paste my script at http://paste.yt-project.org/show/3112/ .

In addition, I would like to get more information/document about eps_writer. For example, I would like to write the time of four phase respectively. Where can I get the information about it?

Thank you in advance, Junhwan

-- -------------------------------------------------------------- Jun-Hwan Choi, Ph.D. Department of Physics and Astronomy, University of Kentucky Tel: (859) 897-6737 Fax: (859) 323-2846 Email: jhchoi@pa.uky.edu <mailto:jhchoi@pa.uky.edu> URL: http://www.pa.uky.edu/~jhchoi --------------------------------------------------------------

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-- John Wise Assistant Professor of Physics Center for Relativistic Astrophysics, Georgia Tech