Thursday, September 3, 2015

Releases 1.19.1 of Tioga and 0.13.1 of ctioga2

I've just released the versions 1.19.1 of Tioga and 0.13.1 of ctioga2. They both fix installation problems with recent versions of Ruby. Update as usual, though that isn't strictly necessary if you've managed to install them properly.
~ gem update tioga ctioga2

Saturday, June 13, 2015

Rescan-scsi-bus and slow DVD drives

For reasons that fail my, my internal SATA DVD drive is very seldom seen by the kernel at startup. My guess is that it takes very long to start, and the kernel doesn't wait that long before deciding that it had all SCSI devices, so it misses it. It's actually very annoying, since you can't use the drive at all. After digging around, I finally stumbled on the rescan-scsi-bus tool from the scsitools package. Running (as root, of course)
~ rescan-scsi-bus -w -l
(sometimes two or three times) is enough to get the device back up, with the /dev/dvd udev symlink.

Hope this'll help !

Thursday, June 11, 2015

Release 0.13 of ctioga2

Today is ctioga2's release. Unlike most other release, this one does not bring many visible features, but quite a few changes nevertheless, including:
  • finally customizable output PDF resolution, which was asked some time ago
  • ways to average successive Y values (for the same X value), setting the error bars to the standard deviation
  • handling of histograms with missing X values (SF issue #1)
  • improvements in the emacs mode (including contextual help)

As usual, the new version is available as a gem

~ gem update ctioga
Enjoy !

Sunday, June 7, 2015

Release 1.19 of Tioga

I've just released Tioga version 1.19. It fixes a couple of bugs, and finally brings the possibility to change the resolution of the target PDF file. A version of ctioga2 that needs this new feature should be published soon. Enjoy !

Monday, March 23, 2015

Release 0.12 of ctioga2

Out is the new version of ctioga2, which brings:
  • a much better handling of heterogeneous x,y coordinates in heat maps: ctioga2 now automatically splits the data into homogeneous segments;
  • control on the properties of the fill and the stroke of symbols (image)
  • decent improvement of error messages
  • and some bug fixes and other minor improvements
As usual, the new release is available as a gem:
~ gem update ctioga2
The website has also been decently improved, with now a search box for finding images in the gallery

Monday, January 26, 2015

Linux kernels for a macbook pro retina

I was unhappy about the recent Linux (3.14-3.16, and I think 3.17 too) kernels on my Macbook Pro Retina (15'), for a few reasons:

  • the nouveau graphics driver was not handling the graphics card very well (hangs when using the DRM after putting the computer to sleep once, garbage screen on various apps, slow 3D rendering), and I could never get the proprietary nvidia drivers to work (would give blank screen at boot time)
  • very unstable wireless (at least with my box home, but not with all the ones I've tried)
  • and the most painful was the need to recompile the kernel by hand, with the following modifications from stock debian kernel:
    +# CONFIG_X86_SYSFB is not set
    +# CONFIG_FB_SIMPLE is not set
    Without these modifications, the screen would be garbled some 5-6 seconds after boot (but SSH would still work, as far as I remember).
The latest 3.18-trunk kernel fixes essentially all the above problems, which is just great. Kudos to everyone involved ! Hope it helps...

Friday, January 2, 2015

Release 0.11 of ctioga2

The new year is starting with a new release of ctioga2, with a lot of new features, such as:

  • patterned fills (shown on the right)
  • loops in command files
  • a CSS-like styling system (with full XPATH support)
  • a backend for mathematical functions of two variables
  • the possibility to hide elements that have been drawn before, useful for making animations using output-now for instance
  • the possibility to have grid elements spanning two or more columns and/or rows
  • many other improvements and bug-fixes

The new release is of course available using rubygems:

~ gem update ctioga2

It can also be downloaded from sourceforge.

The possibilities of the new styling system are particularly interesting, and I'm working on ways to make it more powerful, and providing series of default style files that anyone could use as they want. Among other future changes, I want to improve the position of ticks, especially when using non-linear axes, and add functions to draw vector fields (though this still needs some thinking). Enjoy, and a happy new year to everyone !