Heat map and deco model name

Rick Walsh rickmwalsh at gmail.com
Mon Sep 12 23:40:36 PDT 2016


On 12 September 2016 at 07:57, Anton Lundin <glance at acc.umu.se> wrote:

> On 01 September, 2016 - Robert Helling wrote:
>
> > Hi,
> >
> > finally, here are the two patches I prepared in recent holiday days in
> southern France without wifi access. I will send them as soon as my laptop
> sees the internet again.
> >
>
> > From 25ca4a02c7b17e2ba6fa849db81da8b1e67baca1 Mon Sep 17 00:00:00 2001
> > From: "Robert C. Helling" <helling at atdotde.de>
> > Date: Sun, 28 Aug 2016 00:09:22 +0200
> > Subject: [PATCH 1/2] Introduce heat map
> > To: subsurface at subsurface-divelog.org
> >
> > This replaces the tissue percentage graph that probably nobody ever
> > understood with a heat map like the one used in the discussion
> > of bubble model deco. The information shown is the same but the
> > saturation is now in the color while the dissue determines the y
> > position.
> >
>
> Here's the link to Simon Mitchell's talk, where the idea came from:
> https://youtu.be/UY61E49lyos?t=2090
>
>
> I've now taken a look at these graphs and I really like what i see.
>
> One opportunity for improvement is the color scale. I rather liked Simon
> Mitchell's scale with light blue -> purple -> down to black for tissues
> taking on gas, and black -> green -> yellow -> red for supersaturated
> tissues off gassing. Those feels like they have a more intuitive
> meaning.
>
> The heat map graph is great.  I agree the heat map scale used in the
presentation was very nice.  I've tried to create something similar in the
attached patch, which applies on top of Robert's.  The attached jpgs are of
a screenshot showing the same dive with heatmap, before and after my patch.


>
> Another thing which would be really nice is to fix it so you can zoom
> into the heat map plot without it "splitting" into 16 different bars.
> We might need someone with a better Qt magic wand here. Tomaz? =)
>
> I definitely can't claim to have a Qt magic wand, but I fluked a spell,
and made it zoom ok with the second patch.

Rick
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