sci-vis What the research was showing, and why you could not see it

Pieces

Newest first. Five formats, in ascending order of how long they take.

  1. Explainer

    A third of it is gone, or nine tenths

    Three fluorescent labels in one piece of mouse tumour, fading across forty-seven frames. How much the vessels lost depends on whether you subtract the background first, and only one of the two answers is about the dye.

    · immunology, microscopy

  2. Explainer

    This image has twenty-seven channels and your figure has three

    Imaging mass cytometry records one channel per antibody. A page holds three colours before they stop being tellable apart, and even the three that cover the most leave half of what was stained unshown.

    · immunology, microscopy

  3. Explainer

    The same number twice, and two different cells

    Two frames twenty-four minutes apart hold the same amount of condensed chromatin, to within two pixels. One is a cell going into mitosis and the other is a cell coming out of it, and only the picture says which.

    · cell biology, microscopy

  4. Volume

    A third of this image is hiding something behind it

    A maximum projection turns 236 optical sections into one picture. Across a third of the area where there is anything to see, it is stacking two separate objects into a single pixel.

    · microscopy, cell biology

  5. Explainer

    What the sentence about an antibody leaves out

    An antibody is Y-shaped, with two arms that bind and a stem that signals. Every word of that is true, and the molecule is 69 Å thick in the direction the drawing throws away.

    · immunology, structural biology

  6. Spot check

    Both ends of this protein are the same colour

    The rainbow running along these structures encodes residue number, which really is ordered. Print it in greyscale and the first residue and the last arrive at the same tone.

    · structural biology, data visualisation

  7. Guide

    The figure with no text in it

    Your plotting tool probably converted your axis labels into drawings of letters. The picture is identical, and nobody can check it any more.

    · data visualisation, scientific publishing

  8. Guide

    SEM or SD?

    One of them describes your animals and one describes your confidence in an average. Collecting more animals shrinks only the second.

    · data visualisation, statistics

  9. Guide

    Jet

    The rainbow colourmap puts its brightest colour two thirds of the way up, and its top and bottom are nearly the same shade of dark.

    · data visualisation, microscopy

  10. Guide

    What your plotting library gives you by default

    matplotlib's second and third colours are the same colour to a red-blind reader. Three conditions is the most ordinary figure there is.

    · data visualisation, scientific publishing

  11. Guide

    What your journal checks, and what it does not

    Two publishers, the same 300 dpi, and only one of them asks whether anyone can tell your colours apart.

    · data visualisation, scientific publishing

  12. Interactive

    A figure is an instrument

    Which chart you choose changes what people take away. That is a measured effect, not a matter of taste.

    · data visualisation, perception