can't read pdf stream using angularjs $resource -

can't figure out... doing wrong?

i following pdf stream server (it seems i'm receiving string array %pdf...) using $resource

data[0] = % data[1] = p data[2] = d data[3] = f ... 

i can't manage generate pdf file stream. code i'm using...

vm.downloadcertificate = function () {   var pdfcertificateservice = new pdfcertificatesservice()   pdfcertificateservice.$get({     certificateid: vm.certificate._id   }).then(function (data) {      var hiddenelement = document.createelement('a');     hiddenelement.href = 'data:application/pdf,' + encodeuri(data);     hiddenelement.target = '_blank';     hiddenelement.download = 'myfile.pdf';     document.body.appendchild(hiddenelement);     hiddenelement.click();   }) } 

please help! none of other posts have been helpfulso far.