There is no official FindGSL.cmake module in the cmake distribution to “automagically” find the Gnu Scientific Library on Windows, Linux and Mac OS X. I have written such a module which works for my configurations, but might not cover all GSL installation on all OS. But you can modify it to fit your needs.
Sometimes one wants to download a source package or similar from sourceforge with curl and not with the browser, e.g. in a script where one wants to download a package automatically. It turns out, that due the latest changes in the download system of sourceforge this is not straightforward. Continue reading Use curl to download a file from sourceforge (mirror)
SciTE is a great text editor – in fact I tested a lot of text editors on Linux, Windows and Mac OS X, but always come back to SciTE since it is comfortable but still fast and small. Everytime I install SciTE on a machine I change the settings so that they fit my need. It’s time to post them somewhere, so that I modify SciTE the next time faster ;). Continue reading My User options file for SciTE
In order to prepare Linux executables for distribution, it’s a good idea to compile the executable in an old Linux distribution. Thus it depends only on “old” versions of libraries and the executable should work on most distributions out there (which provide newer but backward compatible libraries). E.g. Dialogblocks, a RAD for wxWidgets, is built in Debian Etch. If you don’t have a spare computer lying around it’s a good idea to install Debian Etch in a virtual machine like VirtualBox. Continue reading Install Debian Etch as guest in Virtualbox
The most frequented blog entries here are about installing Gnuplot on Ubuntu Linux or Mac OS X. These entries are still valid for the newer Ubuntu versions. But Gnuplot newest version 4.4.0 was already released, and in this release there are cairo based pdf and png terminals provided. So you don’t need the pdflib anymore. Below you’ll find updated instructions to compile and install Gnuplot 4.4.0 with wxt and pdfcairo terminal. These instructions were tested on Ubuntu 8.04 (Hardy Heron) and Ubuntu 9.10 (Karmic Koala) and should also work on 8.10 (Intrepid Ibex) and 9.04 (Jaunty Jackalop). Continue reading Install Gnuplot 4.4.0 on Ubuntu Linux
In research sometimes you want to make a movie from single images, like plots from experimental data or from calculation to visualize changes or so on. In order to achieve this you can use ffmpeg. First you have to create the images and save them, where the images need to have a continuous number in the filename, e.g. img0001.png, img0002.png, …, …img5467.png. Take care that there is no image missing and that you have enough zeroes in front of the image number, so that the files are in the correct order. Continue reading Create a movie file from single image files (png, jpegs)
If you have your own Ubuntu server running you may encounter the maximal file size upload limit in php scripts which is set to 2Mb as default. In order to change that we first have a look what the size actually is. In
/var/www (standard www directory) create a file called
info.php with the following content:
<?php // Show all information, defaults to INFO_ALL phpinfo(); ?>
There is a new beta version of VirtualBox for Mac OS X available and installing Ubuntu Gutsy Gibbon worked like a charm (in opposition to Parallels). The only problem I encountered was, that it was not possible to mount a directory from the Mac OS X host in the guest system with either the internal mechanism (Folder sharing) and just directly via samba. In the latter case I could mount the host directory and could view it once, but than the mount was always busy and I had no access anymore. But I found another solution: sshfs. Here is a short introduction how to do that:
I again have updated these instructions for Gnuplot 4.4.0 RC1 and newer Ubuntu versions. Find them in this post.
Some months ago I wrote a small Howto about installing Gnuplot on Ubuntu Feisty Fawn with readline, pdf and wxWidgets terminal support. It turned out, that this howto was of interest for many people, since this blog post was the most visited until Gutsy Gibbon came out – and the readline problem was obviously solved, since it works now if you install the standard Gnuplot package. Still the pdf and wxWidgets terminal are not compiled in by default, therefore I wrote a new (shorter) howto about including this terminals.
So here are the instructions: Continue reading Install gnuplot on Ubuntu Gutsy Gibbon
I use an Ubuntu server as a work-horse for my calculations and connect from my desktop-pc with ssh to the server. For some applications (gnuplot =) this is really slow altough it’s over LAN. I found on the internet some instructions to improve this situation: instead of the AES cipher the arcfour and blowfish ciphers perform much better and switching on compression also doesn’t hurt. Therefore one should use
ssh -c arcfour,blowfish-cbc -XC host.com
to connect to with ssh. And guess what? This really improves the situation, especially for gnuplot. Thanks Samat!