Radio Galaxy Zoo Talk

A color palette

  • mlpeck by mlpeck

    I didn't want to interrupt the "journal club" thread with a marginally relevant post, but you might be interested in this. I stumbled across a recently published R package called viridis, which according to the description is the new default color palette for matplotlib (the Python plotting package). Here's the package description:

    Port of the new Matplotlib default color map ('viridis') to R. This
    color map is designed in such a way that it will analytically be
    perfectly perceptually-uniform, both in regular form and also when
    converted to black-and-white. It is also designed to be perceived by
    readers with the most common form of color blindness.

    I'm not sure what "analytically perfectly perceptually-uniform" quite means, but I've tried this on some real continuous 3D data and it's quite effective (I have normal color vision by the way).

    I have to say I find the heat map color palette to be rather off-putting, which is one of several reasons I haven't really contributed any clicks to this project.

    Posted

  • 42jkb by 42jkb scientist, admin in response to mlpeck's comment.

    Thank you for this. We have noticed that the colour choice of RGZ may not have been a good one. We will investigate this new colour package. Another one that radio astronomers are moving towards is CUBEHELIX.

    Posted

  • Dolorous_Edd by Dolorous_Edd

    Just to give an idea how this color scheme looks

    right image is viridis color scheme

    enter image description here

    I like how all those color scehems give you a good ol' acid trip experience

    A nice presentation on YouTube

    Posted

  • 42jkb by 42jkb scientist, admin in response to Dolorous Edd's comment.

    That is much nicer than the 'before' image. Those are hard to look at.

    I think that this new colour scheme may be a good one for RGZ. Now we just have to find a good colour for the contours - this is usually where the problem lies.

    Posted