![](/i/fill.gif) |
![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
From: Ron Mayer
Subject: Sphere reflecting crimes over a checkered plane
Date: 25 Oct 2004 04:40:57
Message: <417cbc19@news.povray.org>
|
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
This is my first "sphere reflecting [crimes] over a checkered [with a
grid of city streets] plane" posting.
PinMaps are a relatively common technique where investigators and
criminologists place pins in maps to help visualize where crimes occur.
Here, each pin represents a crime event, where the height of the pin
represents the time-of-day that the crime occurred. I oriented all
the pins to face the camera, and angled them slightly so multiple events
at the exact same location can be seen.
Ron
Any feedback / suggestions appreciated. I'm clearly not shooting for
photorealism here - but any ideas about making the data easier to
visualize would be much appreciated.
Post a reply to this message
Attachments:
Download 'good6b_pinmap_with_icons.png.jpg' (87 KB)
Preview of image 'good6b_pinmap_with_icons.png.jpg'
![good6b_pinmap_with_icons.png.jpg](/povray.binaries.images/attachment/%3C417cbc19%40news.povray.org%3E/good6b_pinmap_with_icons.png.jpg?ttop=441697&toff=5950&preview=1)
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
From: Ron Mayer
Subject: Re: Sphere reflecting crimes over a checkered plane
Date: 25 Oct 2004 04:46:56
Message: <417cbd80@news.povray.org>
|
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Another crime visualization.
In this case using blobs to make the highest concentration areas of
crime easily visible by making it look like blood - or strawberry
jelly :) - spilled on the map.
Again, advice on how to better convey information or visualize the data
would be appreciated.
In particular, I want to make the volume of a blob roughly proportional
to the number or severity of events that occurred inside it; but with
the blob parameters I can't seem to find an easy way to make 100 events
have a 10x bigger blob than 10 events without 1x blobs vanishing. Maybe
I need a low threshold or something? I'm not sure.
[PS: the crime data is fake, so just because you see stuff on your house
doesn't mean you should feel in danger]
Post a reply to this message
Attachments:
Download 'good1_blood.png.jpg' (88 KB)
Preview of image 'good1_blood.png.jpg'
![good1_blood.png.jpg](/povray.binaries.images/attachment/%3C417cbd80%40news.povray.org%3E/good1_blood.png.jpg?ttop=441697&toff=5950&preview=1)
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
From: Ron Mayer
Subject: Re: Sphere reflecting crimes over a checkered plane
Date: 25 Oct 2004 04:56:10
Message: <417cbfaa@news.povray.org>
|
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Yet another technique.
In this case each block represents a crime event and the way they stack
up makes it very easy to see which areas have the most crimes.
The second example uses no lights but "glowing" (ambient) blocks so the
lighter colored areas of the map are the more dangerous.
Comments about which of the techniques (pins, blobs, or blocks) make the
data easiest to visualize are appreciated - as would be any ideas
regarding other things I might try.
Thanks in advance.
Post a reply to this message
Attachments:
Download 'good8_hotblocks_trends.png.jpg' (76 KB)
Download 'lighting_exp_blocks.png.jpg' (54 KB)
Preview of image 'good8_hotblocks_trends.png.jpg'
![good8_hotblocks_trends.png.jpg](/povray.binaries.images/attachment/%3C417cbfaa%40news.povray.org%3E/good8_hotblocks_trends.png.jpg?ttop=441697&toff=5950&preview=1)
Preview of image 'lighting_exp_blocks.png.jpg'
![lighting_exp_blocks.png.jpg](/povray.binaries.images/attachment/%3C417cbfaa%40news.povray.org%3E/lighting_exp_blocks.png.jpg?ttop=441697&toff=5950&preview=1)
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
I definitly love the bloody one !
One thing, though : couldn't you fing a map with a better resolution (or
maybe it is just the jpg compression) ? I think it spoils a bit the
whole image. But the idea is great great great !
--
"Je ne deteste que les bourreaux" -- Albert Camus
Pour m'ecrire un mail, veuillez retirer PASDEPUB de mon adresse ;)
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
From: Paolo Gibellini
Subject: Re: Sphere reflecting crimes over a checkered plane
Date: 25 Oct 2004 07:59:57
Message: <417ceabd@news.povray.org>
|
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Cool!
The "chupa chups" one is my preferred.
How about using little or big gangsters?
;-)
Paolo
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Ron Mayer <rm_### [at] cheapcomplexdevices com> wrote:
> Comments about which of the techniques (pins, blobs, or blocks) make the
> data easiest to visualize are appreciated - as would be any ideas
> regarding other things I might try.
>
> Thanks in advance.
I personally think that the lighted boxes gives me the best picture of the
data. The main problem with it is that the map is now very difficult to
see. You might want to consider mapping (heh) the colors to a
higher-contrast scheme in your map image. Here is a (pretty poor, but
useful) example I whipped up in Photoshop, using a Yahoo map.
- dan B hentschel
Post a reply to this message
Attachments:
Download 'contrast-mapping.png' (271 KB)
Preview of image 'contrast-mapping.png'
![contrast-mapping.png](/povray.binaries.images/attachment/%3Cweb.417cf2507c315a76a3fcf12a0%40news.povray.org%3E/contrast-mapping.png?ttop=441697&toff=5950&preview=1)
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
One more question - in my radiosity one (the second image with blocks) I
get all these random circles about an inch in diameter up on the top of
the map where I thought it would be dark.
Are those bad radiosity settings? Anyone able to guess in whicch way
they were wrong?
Ron Mayer wrote:
> Yet another technique.
>
> In this case each block represents a crime event and the way they stack
> up makes it very easy to see which areas have the most crimes.
>
> The second example uses no lights but "glowing" (ambient) blocks so the
> lighter colored areas of the map are the more dangerous.
>
> Comments about which of the techniques (pins, blobs, or blocks) make the
> data easiest to visualize are appreciated - as would be any ideas
> regarding other things I might try.
>
> Thanks in advance.
>
> ------------------------------------------------------------------------
>
>
> ------------------------------------------------------------------------
>
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Noe Falzon wrote:
> I definitly love the bloody one !
> One thing, though : couldn't you fing a map with a better resolution (or
> maybe it is just the jpg compression) ? I think it spoils a bit the
> whole image. But the idea is great great great !
I see what you're saying, and I think it's a combination of both effects
that are affecting the image.
Regarding the resolution of the map, this flyover animation has a much
higher-res map:
http://maps.forensiclogic.com/sac_flyover.wmv
but the .wmv compression artifacts were even worse than the .jpg
artifacts in the still pictures I posted. In larger .png images the
cubes look much sharper and easy to recognise as well - but at least for
a first pass I wanted to spare people the bandwidth. Hopefully I'll
incorporate people's suggestions and post a less compressed version of
whatever the best approach might be.
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |