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By the way, it appears that the feynman diagrams appear in the wrong order using these method. You can avoid this using one metapost file per diagram. I automated the process by defining a new environment

\newenvironment{feynman}[1][1]{
\begin{fmffile}{fey_#1}
\begin{fmfgraph}(40,25)\fmfkeep{#1 ...

You could if you used one of the many free syncing services which are available online, e.g. dropbox, syncables or spider sync. They save previous versions of your files, so that if you make a mistake and overwrite your file you can reload it from their servers.

Done!

Since I couldn't find any answer on how to make texnic center interact with feynmp, I thought about asking how to make kile work with it instead. Turns out the solution is surprisingly fast, and works just fine with texnic center too.

As you can see here
http://tex.stackexchange.com ...

I'm trying to make some Feynman diagrams with the feynmp package, but I can't manage to get it to work properly with TeXnicCenter. I can produce them, but they don't get automatically included in the PDF. What I do now is:

Produce the Metapost file using the appropriate latex code.
Manually give ...

Mine won't close when i give the compile command a second time, and thus the compiler stops immediately. I have to close the pdf by hand for the compiler to work. Any ideas on how to fix it?

. I tried doing as astock said but it didn't work.

kaiserkarl13 wrote:You might have a look at the amsmath package and how it defines \DeclareMathOperator. That's a similar idea to what you're trying to do.

That's what I did, but couldn't figure out how it worked either. That's why I was asking about it.

I did find that useful, thankyou, though it wasn't what I wanted. I'll try to make myself clearer: Suppose I have a whole lot of derivatives to define in my source code. For example, suppose I want to define partial derivatives with respect to x,y,z,t and \alpha as \dex,\dey,\dez,\det,\dea. Usually ...

I want to define commands that work like DeclareMathOperator, allowing to deine other commands in a straightforward way.

E.G., I want to be able to write something like

\DeclarePartialDerivative{a}{\alpha}

and make it work like

\newcommand\dea[1]{\frac{\partial #1}{\partial \alpha}}

so that ...

Apparently, there is a number of reasons for the red arrow to disappear. I too had this problem and I solved as described here

http://www.latex-community.org/forum/vi ... =10#p47820

I had the same problem, but then i solved it. Going by trial and error, I realized that this feature doesn't work if the file name contains any dots (.) or whitespaces ( ). Underscores (_) seem fine though.

E.g., it didn't work naming the file "a.test" or "a test", but it did work if i called it "a ...