Contains two functions that utilize the "TranslateDna.js" functionality

MickMaguire · MickMaguire · commit c43beff97896 · 2012-12-14T12:56:30.000Z
The JavaScript functions contained here can be called in Google
spreadsheets as user-defined functions provided that the script file
"TranslateDna.js" is available.
diff --git a/dna_translate_udf.js b/dna_translate_udf.js
@@ -0,0 +1,40 @@
+/*global TranslateDna: false */
+/*
+ Follwing functions require the script file "TranslateDna.js".
+ They can be called in Google spreadsheets as user-defined functions 
+ Example Invocations as user-defined functions:
+ =getTripletsFromDNA(A1, "|")
+ =getAminoAcidsFromDNA(A1,"|")).
+
+Code has been checked in JSLint
+*/
+// Concatenate the result of breaking up the input sequence into triplets with
+// a user specified concatenation string and return the concatenated output.
+function getTripletsFromDNA(dnaSeq, concatStr) {
+    'use strict';
+    var trans = new TranslateDna(dnaSeq);
+    return trans.getTriplets().join(concatStr);
+}
+// Return the amino acid translation of the input sequence as a concatenated string.
+// The array of amino acids can contain inner arrays when a given nucleotide triplet
+// contains ambiguous characters such as "R".  These array elements are detected by
+// the "Array.isArray()" check and are processed separately by being concatenated with an empty
+// string and are converted to lower case.
+function getAminoAcidsFromDNA(dnaSeq, concatStr) {
+    'use strict';
+    var trans = new TranslateDna(dnaSeq),
+        aminoAcids = trans.getAminoAcids(),
+        elementCount = aminoAcids.length,
+        i,
+        mixedAminoAcids,
+        processedAminoAcids = [];
+    for (i = 0; i < elementCount; i += 1) {
+        if (Array.isArray(aminoAcids[i])) {
+            mixedAminoAcids = aminoAcids[i].join('').toLowerCase();
+            processedAminoAcids.push(mixedAminoAcids);
+        } else {
+            processedAminoAcids.push(aminoAcids[i]);
+        }
+    }
+    return processedAminoAcids.join(concatStr);
+}
