specified cells from csv to matrix

[Suhad Faisal]

Hello 

I have a problem with reading a specific fields from csv file as in the following model : where I need to deal with just the pos_x, pos_y fields to assign them as a matrix cell but gama read them differently 

any advice to adjust it 

model Matrix

/* file my_csv_file <- csv_file("../includes/iris.csv",",");

init {

matrix data <- matrix(my_csv_file);

loop i from: 1 to: data.rows -1{

loop j from: 0 to: data.columns -1{

write "data rows:"+ i +" colums:" + j + " = " + data[j,i];

 */

 

global { 

file Peoplefile4<-file('../includes/41821.csv');

int i;

int j;

 

{  matrix data<- matrix(Peoplefile4);

    loop i from: 1 to:  data.rows

     {

       loop j from: 4 to: 5

        {  

          write "data rows:"+ i +" colums:" + j + " = " + data[j,i];

          

        create People from: data header:true  

        with:[i::int(read('pos_x')),j::int(read('pos_y'))];

        

        location<-data[i, j];             

       }

       

       }

       }   

  entities { species People

  {

  int i; 

  int j;

  aspect basepeople {draw circle(0.5) color:rgb("yellow") at:location;}

  }

}

experiment Citymatrix type: gui {

output { display disp 

{    

 

 species People   aspect: basepeople;

}    }

}    }

thanks in advance 

suhad

[Patrick Taillandier]

Hi,

Just a warning concerning CSV file: you should use US formatting for number: "3.5" and not "3,5" (french formatting).

Concerning the separator, you use the good one (by default, GAMA uses "," as separator) :

file Peoplefile4<-file('../includes/41821.csv', my_separator);

Cheers,

Patrick

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