some emergent markets


grasshopper takes on picard + roving markets by jhuang
July 13, 2010, 5:48 pm
Filed under: Paris | Tags: , , , ,

My earlier post mentioned the abundance of Picard Surgelés all over Paris.  The question of relationships between the two large systems was intriguing.  So, here are some screenshots of a start of a GH definition in attempt to address this issue.

I used these high contrast bitmaps to extract data in Grasshopper: Picards [top] and Roving markets [bottom]

Then I brought them into Grasshopper, which gave me interesting patterns of both systems. Picards are in light gray and is in the lower half of the z-axis.

I then introduced meshes from the various height fields as seen above.

The next step will be a challenge.

The initial thought was to create a mega-mesh that stretched from the top half of the z-axis to the bottom half, which combined points of both systems.  I then tried to take the intersection between that mesh and a flat surface at the z-axis zero.  I hoped that the operation would give me curves that showed a larger pattern of interaction.  Unfortunately, I haven’t found a way to get a mesh to intersect with a surface yet.

So, the investigation continues….

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Infrastructural Ground by Daphne Lasky
July 12, 2010, 9:43 pm
Filed under: Uncategorized | Tags: , , ,

Spend enough time wandering Parisian markets, and you’re bound to notice the pop-up electrical outlets that dot the market plazas. Standard, well-functioning outlets, like the yellow one below, are all well and good, but I love it when I see an outlet cover that’s been pried up, sitting haphazardly at some odd angle.

We’re toying with some initial grasshopper investigations, and one thing I’ve been thinking about is how the ground plane might reveal the infrastructure buried underneath. If electricity is accessed through a field of point sources, might increased loads at certain points cause the ground to thicken?

The above drawing shows individual points shifting independently of one another. What if, however, heavily-used points began to subsume more minor access locations, meta-ball-style? One result (shown below in section) might be a faceted surface with a complex substructure:

Finally, are these operations additive only, or might they also become subtractive? For every action…



Market Activity Definition by Daphne Lasky
June 18, 2010, 2:19 pm
Filed under: Uncategorized | Tags: , ,

Here’s the definition (and the Rhino file and jpg) that drove the Market Activity animation. The file is annotated, so feel free to explore at-will. The definition is really a string of one repeated series of components, which I’m calling a “dispatch and shift utility.”

[click to enlarge]

As you can see from the screengrab, an aspect of a list of data (usually its length, etc, but in this example, it’s just a param slider..) is measured against an adjustable threshold. When the threshold is reached, the data passes through the dispatch component, only to be “Jittered.” Re-ordering the list this way is what lets you have umbrellas and people pop up willy nilly. Finally, Shift List + Param Slider makes more or less of the data visible.

The basic unit is pretty straightforward, but within the larger definition, there are several variations, and parts of it begin to become rather inelegant. Any thoughts on how it all could be streamlined?



we love shade by jhuang
June 16, 2010, 6:49 pm
Filed under: Rome | Tags: , , , ,

The shade created by the vendor umbrellas is a huge magnet during market hours and it begins to control movement in the piazza [see photos from a previous post].  Here is the beginning of a new layer of information to the previous “density fluctuations” definition.  The lighter shade of pink is the umbrella layer and the green square outlines are the shaded areas [responds to and is controlled by a sun definition].  The paths shift towards the shaded areas, which should create more clusters [metaballs] under the umbrellas.  Ideally, there would be one master slider for the various parameters [time of day, umbrella coverage, movement of people, etc.], but let’s hope that won’t be too much of a challenge.



Market Activity by Daphne Lasky
June 16, 2010, 5:49 pm
Filed under: Uncategorized | Tags: , , , , ,

At first glance, it seems all too obvious that everyone comes to the Campo de Fiori for the market. With its fruits and vegetables aplenty, tourists and locals alike must flock to the campo in search of whatever’s fresh and seasonal.

In reality, however, the market accounts for only 8 hours of campo activity a day. Why, then, is the piazza full of people ’round the clock?

I think the answer is that, as a painting teacher of mine used to say, people like to look at people.

When the market vendors arrive in piazza in the morning, the place is deserted. As they begin to set up and display their wares, a few brave souls venture out to make some early purchases. Over the course of the morning, the crowds grow, and the neighboring cafes open up. Pedestrians ogle the market goods, while seated espresso-sippers ogle passers-by.

By the time the market vendors begin packing up around 1:00, a lunchtime crowd packs the cafes. Once the piazza is empty, it is the cafe patrons themselves who are the performance for pedestrians to enjoy. This mutual people-watching continues through the aperitivo hour, and far into the night.

In all of this, the market plays the role of a catalyst, creating enough human activity that, by the time the sun grows hot, it has done its job, and can go home for a nice, cool rest.

[Poor definition-management skills means that the gh component to this post is a bit out-of-hand at the moment. Keep a look-out for a separate post with the definition download and some thinking about strategies for nesting actions…]



Coming Soon… by Daphne Lasky
June 15, 2010, 10:03 pm
Filed under: Uncategorized | Tags: ,

…I promise…



Density fluctuations | Campo de’ Fiori by jhuang
June 13, 2010, 7:53 pm
Filed under: Rome | Tags: , , , ,

This animation illustrates a more complex system of movement than the previously uploaded “density shifts.” With more paths through the piazza, the interaction of people start to cluster in less predictable places.

Rhino file | 100613-density fluctuations.3dm

GH file | 100613-density fluctuations.ghx