Category Archives: Emacs

Viewing all the objects in R in a buffer in Emacs

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You also probably did not read the complete Emacs-Speaks-Statistics manual… ? By chance, I discovered a nice feature, called Rdired.
This command gives you a dired-buffer with all your objects. In this buffer you can view, edit and plot your R-objects. It is documented in chapter 12.9 of the manual.
 
Here is small example: In the buffer in the middle, you see the original code taken from the manual. I invoked ess-rdired and the lower buffer is shown. I then put the cursor on the line with the parameter s and hit “v”. This gave me the upper buffer
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Auto-Completion in Emacs, LaTeX and Gams

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The fun with Emacs is that you can discover new (or old) stuff that makes your life much easier on an almost weekly base. I was reading the manual on Emacs Speaks Statistics and discovered that there is a mode called auto-completion. I googled it, installed it and after some experimenting, I got it running. You can find it here. It comes with autocompletion for some programming languages (Python, Ruby, C+, etc.) but not for LaTeX, so I googled further and discovered an extension called auto-complete-latex (you can download it here.
Here are some screenshots: You just start
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Using Gams, R and LaTeX I

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Wow, I just discovered how easy it is to produce nice LaTeX tables from your Gams results. Usually I capture my model results in some parameters that are exported (using gdx or gdxxrw) to excel. Then I make my tables in Excel and use an excel add-in to export the table to LaTeX (I have written about this add-in in this blog). This works fine, but is tedious because as soon as my results are in excel, I can’t do things automatically and have to click my way to get my LaTeX tables.
Today, I was working on the parking
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Compiling LaTeX files to pdf: a second try

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In a previous topic, I showed how to use a macro to kill your pdf-reader when you compile LaTeX files. Most pdf-readerss do not allow to refresh a pdf-file after compilation, so you have to close the file in the pdf-reader before compiling. My solution was to kill the pdf-reader completely. A reader of my blog wrote that you can use Sumatra, a free pdf-reader, which allows to refresh your pdf-file.
I decided to give it a try, but I wanted to keep my normal pdf-reader for all other pdf-files, because it has lots of options like commenting etc. I
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Using the identifier-list in Gams-mode

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Gams-mode has lots of features and I am still amazed how powerful it is. I just discovered the use of the identifier-list (C-c C-a). I have a rather complex model with lots of include files and easily forget all the parameter names I use. Was it scale_mrd or mrd_scale? What was the name of the set HH or HHG? Here is where the identifier list comes in handy. Just hit C-c C-a and all the parameters, sets, variables appear as a new buffer.
 
 
 
 
You can change the way this information is listed. For example hit in
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