How to draw ellipse

[Tariq Aziz]

I am new to GAMA. I want to use this platform for Fire simulation. I need to draw an ellipse to define the neighbourhood of a burning building.How i can draw an ellipse on a shapefile? (i have major and minor axis of ellipse) . And how to select buildings under that ellipse?

 

Thanks

 

Regars

Tariq 

[Patrick Taillandier]

HI,

First of all, you should ask your question on the GAMA general mailing
list to have more chance to get an answer. As far as I know, it is not
possible to define an ellipsoid geometry in GAMA. However, it should
be possible to add an new operator to build this kind of geometry.
Note that I currently have a problem with my computer (I have to use a
very old one ...) and I will not be able to define this new operator
before the beginning of March.

Cheers,

Patrick

2015-02-20 7:47 UTC+01:00, Tariq Aziz <tariq....@gmail.com>:

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[Patrick Taillandier]

Oups, sorry, I did not see that your message was posted on the GAMA mailing list. You can forget the first part of my message ;) .

Cheers,

Patrick

[Tariq Aziz]

ok fine . . . . one more thing if i draw a circle rather an ellipse, how  i can select buildings under the circle from shapefile? 

[Srirama Bhamidipati]

Hallo,

If you have the manual or see online wiki for operators like: inside, overlapping, agents_inside, covers etc

regards,

Srirama

[Tariq Aziz]

Hello

i have drawn a circle and now want to select buildings under this. I tried the following

species building {

string type ; 

rgb color <- #gray  ;

aspect base {

draw shape color: color ;

if wind_velocity =5 {}

draw circle(100) color: rgb('red') at: ignition_point empty:true {

list<buildings> buildings_inside -> {building inside self} ;

}

not sure that is it right to select buildings under the cirle? If yes then how i can see the output and one more thing that how to assign five different states to the selected buildings.

Please help

Thanks

[Srirama Bhamidipati]

Hallo,

this is not right. you have to use the geometry data type to make a circle and then make the circle an agent and then you can use one of the various spatial query operators to ask what is  inside or within etc etc. 

so you say 

geometry my_circle <- circle(radius); 

something like that, many examples in the model library. 

regards.

Srirama 

[Tariq Aziz]

Thanks

I try this one

On Thu, Mar 12, 2015 at 3:46 PM, Srirama Bhamidipati <b.sr...@gmail.com> wrote:

Hallo,

this is not right. you have to use the geometry data type to make a circle and then make the circle an agent and then you can use one of the various spatial query operators to ask what is below or inside or within etc etc. 

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