find images resolution

-

hi forum,

 

i have tried alert links if has 250 or 300 resolution. if pdf placed, script replying error message.

"object not support property or method actualppi"

 

how can omit check pdf , continue find other images resolution , alert.

 

 

 

var doc = app.activedocument;

var graphics = doc.allgraphics;

 

var image, horres, verres;

 

for (var = 0; < graphics.length; i++) {

     image = graphics[i];

     if(image.actualppi[0] ==300 ||

     image.actualppi[0] ==250){

alert ("images in 300 & 250 dpi");                 

          }

     

     }

 

 

thanks in advance forum...

for example check hasownproperty('actualppi') != false , start over



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