Any difference between grid spatial grid from asc file?

[Etienne DELAY]

Hi all, 

I have developed a model based on abstract environment where each agents create a cell list overlapping a perception cone (like in the model library). 

Now I work on real spatial data so I create my initial grid from an asc file as Patrick said. But now my perception reflex doesn't work any more ...

it looks like that : 

reflex perception {

perceived_area <- (cone((180+heading)-3#km,(180+heading)+3#km) intersection world.shape) intersection circle(perception_distance);

if (perceived_area != nil) {

myVisibility <- dem_file overlapping perceived_area;

}

 

}

myVisibility stay desperately empty !! So is there any difference between grid create from  :

grid veg_cell width: 100 height: 100 neighbors: 8 {}

And 

grid dem_cell file:dem_file {}

Or overlapping function work differently ? 

E.

[Patrick Taillandier]

Hi,

You just test to replace the file by the grid in the computation of myVisibility:

myVisibility <- dem_file overlapping perceived_area; -> myVisibility <- dem_cell overlapping perceived_area;

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[Etienne DELAY]

Arg !! Shame ! 

Thank you Patrick you will be proud of my beautiful model ;-)

Le vendredi 21 juillet 2017 13:40:08 UTC, Patrick Taillandier a écrit :

Hi,

You just test to replace the file by the grid in the computation of myVisibility:

myVisibility <- dem_file overlapping perceived_area; -> myVisibility <- dem_cell overlapping perceived_area;

2017-07-21 14:50 GMT+02:00 Etienne DELAY <abce...@gmail.com>:

Hi all, 

I have developed a model based on abstract environment where each agents create a cell list overlapping a perception cone (like in the model library). 

Now I work on real spatial data so I create my initial grid from an asc file as Patrick said. But now my perception reflex doesn't work any more ...

it looks like that : 

reflex perception {

perceived_area <- (cone((180+heading)-3#km,(180+heading)+3#km) intersection world.shape) intersection circle(perception_distance);

if (perceived_area != nil) {

myVisibility <- dem_file overlapping perceived_area;

}

 

}

myVisibility stay desperately empty !! So is there any difference between grid create from  :

grid veg_cell width: 100 height: 100 neighbors: 8 {}

And 

grid dem_cell file:dem_file {}

Or overlapping function work differently ? 

E.

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