title: Entering data in AMPL
body: <p>I have a set such as: </p>
  
  <pre><code>set PRODUCTS  := p1 p2 p3 p4 p5 ;
  </code></pre>
  
  <p>Associated to this set I have some parameters, of the form:</p>
  
  <pre><code>param min_production {PRODUCTS} &gt;= 0;
  param max_production {PRODUCTS} &gt;= 0;
  </code></pre>
  
  <p>I want to fill these <code>param</code>s with a format where the set index is the col index, and the <code>param</code> name is the row index.</p>
  
  <p>Something like this:</p>
  
  <pre><code>#Data                       p1   p2   p3   p4   p5
  param min_production        20   10   20   20   30 ;
  param max_production       120  110  120  120  150 ;
  param min_stock_products    20   20   20   20   20 ;
  param max_stock_products   100   80   80  120  120 ;
  param price               6400 6000 5900 6250 6500 ;
  param unit_cost            800 1000  400  500 1000 ;
  param fixed_cost          1500 1500 1250 1500 1600 ;
  param stock_cost_products   20   20   10   25   30 ;
  param frac_demand_lost     0.4  0.4  0.4  0.4  0.4 ;
  </code></pre>
  
  <p>Is this possible? What is the syntax?</p>