]> git.donarmstrong.com Git - mothur.git/blobdiff - sequence.cpp
added modify names parameter to set.dir
[mothur.git] / sequence.cpp
index f136426b327fdbd13d4143645b80cb060059325e..d6073d75da3ed630b27b626bbba8615d79b58858 100644 (file)
  *
  */
 
-using namespace std;
-
 #include "sequence.hpp"
 
 /***********************************************************************/
-
-Sequence::Sequence()  {}
-
+Sequence::Sequence(){
+       m = MothurOut::getInstance();
+       initialize();
+}
 /***********************************************************************/
-
 Sequence::Sequence(string newName, string sequence) {
-       name = newName;
-       if(sequence.find_first_of('-') != string::npos) {
+       try {
+               m = MothurOut::getInstance();
+               initialize();   
+               name = newName;
+        
+        m->checkName(name);
+               
+               //setUnaligned removes any gap characters for us
+               setUnaligned(sequence);
                setAligned(sequence);
        }
-       setUnaligned(sequence);
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "Sequence");
+               exit(1);
+       }                       
 }
+/***********************************************************************/
+Sequence::Sequence(string newName, string sequence, string justUnAligned) {
+       try {
+               m = MothurOut::getInstance();
+               initialize();   
+               name = newName;
+        
+        m->checkName(name);
+               
+               //setUnaligned removes any gap characters for us
+               setUnaligned(sequence);
+       }
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "Sequence");
+               exit(1);
+       }                       
+}
+
 //********************************************************************************************************************
+//this function will jump over commented out sequences, but if the last sequence in a file is commented out it makes a blank seq
+Sequence::Sequence(istringstream& fastaString){
+       try {
+               m = MothurOut::getInstance();
+       
+               initialize();
+        name = getSequenceName(fastaString);
+               
+               if (!m->control_pressed) { 
+                       string sequence;
+               
+                       //read comments
+                       while ((name[0] == '#') && fastaString) { 
+                               while (!fastaString.eof())      {       char c = fastaString.get(); if (c == 10 || c == 13){    break;  }       } // get rest of line if there's any crap there
+                               sequence = getCommentString(fastaString);
+                               
+                               if (fastaString) {  
+                                       fastaString >> name;  
+                                       name = name.substr(1);  
+                               }else { 
+                                       name = "";
+                                       break;
+                               }
+                       }
+                       
+                       while (!fastaString.eof())      {       char c = fastaString.get();  if (c == 10 || c == 13){ break;    }       } // get rest of line if there's any crap there
+                       
+                       int numAmbig = 0;
+                       sequence = getSequenceString(fastaString, numAmbig);
+                       
+                       setAligned(sequence);   
+                       //setUnaligned removes any gap characters for us                                                
+                       setUnaligned(sequence); 
+                       
+                       if ((numAmbig / (float) numBases) > 0.25) { m->mothurOut("[WARNING]: We found more than 25% of the bases in sequence " + name + " to be ambiguous. Mothur is not setup to process protein sequences."); m->mothurOutEndLine(); }
+               }
+               
+       }
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "Sequence");
+               exit(1);
+       }                                                               
+}
+//********************************************************************************************************************
+//this function will jump over commented out sequences, but if the last sequence in a file is commented out it makes a blank seq
+Sequence::Sequence(istringstream& fastaString, string JustUnaligned){
+       try {
+               m = MothurOut::getInstance();
+       
+               initialize();
+               name = getSequenceName(fastaString);
+               
+               if (!m->control_pressed) { 
+                       string sequence;
+               
+                       //read comments
+                       while ((name[0] == '#') && fastaString) { 
+                               while (!fastaString.eof())      {       char c = fastaString.get(); if (c == 10 || c == 13){    break;  }       } // get rest of line if there's any crap there
+                               sequence = getCommentString(fastaString);
+                               
+                               if (fastaString) {  
+                                       fastaString >> name;  
+                                       name = name.substr(1);  
+                               }else { 
+                                       name = "";
+                                       break;
+                               }
+                       }
+                       
+                       while (!fastaString.eof())      {       char c = fastaString.get();  if (c == 10 || c == 13){ break;    }       } // get rest of line if there's any crap there
+                       
+                       int numAmbig = 0;
+                       sequence = getSequenceString(fastaString, numAmbig);
+                       
+                       //setUnaligned removes any gap characters for us                                                
+                       setUnaligned(sequence); 
+                       
+                       if ((numAmbig / (float) numBases) > 0.25) { m->mothurOut("[WARNING]: We found more than 25% of the bases in sequence " + name + " to be ambiguous. Mothur is not setup to process protein sequences."); m->mothurOutEndLine(); }
+                       
+               }
+               
+       }
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "Sequence");
+               exit(1);
+       }                                                               
+}
+
 
+//********************************************************************************************************************
+//this function will jump over commented out sequences, but if the last sequence in a file is commented out it makes a blank seq
 Sequence::Sequence(ifstream& fastaFile){
-       
-       string accession;                               //      provided a file handle to a fasta-formatted sequence file, read in the next
-       fastaFile >> accession;                 //      accession number and sequence we find...
-       setName(accession);
+       try {
+               m = MothurOut::getInstance();
+               initialize();
+               name = getSequenceName(fastaFile);
+               
+               if (!m->control_pressed) { 
+                       
+                       string sequence;
+               
+                       //read comments
+                       while ((name[0] == '#') && fastaFile) { 
+                               while (!fastaFile.eof())        {       char c = fastaFile.get(); if (c == 10 || c == 13){      break;  }       } // get rest of line if there's any crap there
+                               sequence = getCommentString(fastaFile);
+                               
+                               if (fastaFile) {  
+                                       fastaFile >> name;  
+                                       name = name.substr(1);  
+                               }else { 
+                                       name = "";
+                                       break;
+                               }
+                       }
+                       
+                       //read real sequence
+                       while (!fastaFile.eof())        {       char c = fastaFile.get(); if (c == 10 || c == 13){  break;      }       } // get rest of line if there's any crap there
+                       
+                       int numAmbig = 0;
+                       sequence = getSequenceString(fastaFile, numAmbig);
+                       
+                       setAligned(sequence);   
+                       //setUnaligned removes any gap characters for us                                                
+                       setUnaligned(sequence); 
+                       
+                       if ((numAmbig / (float) numBases) > 0.25) { m->mothurOut("[WARNING]: We found more than 25% of the bases in sequence " + name + " to be ambiguous. Mothur is not setup to process protein sequences."); m->mothurOutEndLine(); }
+                       
+               }
 
-       char letter;
-       string sequence;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "Sequence");
+               exit(1);
+       }                                                       
+}
+//********************************************************************************************************************
+//this function will jump over commented out sequences, but if the last sequence in a file is commented out it makes a blank seq
+Sequence::Sequence(ifstream& fastaFile, string& extraInfo, bool getInfo){
+       try {
+               m = MothurOut::getInstance();
+               initialize();
+        extraInfo = "";
+               
+               name = getSequenceName(fastaFile);
+               
+               if (!m->control_pressed) {                      
+                       string sequence;
+            
+                       //read comments
+                       while ((name[0] == '#') && fastaFile) { 
+                               while (!fastaFile.eof())        {       char c = fastaFile.get(); if (c == 10 || c == 13){      break;  }       } // get rest of line if there's any crap there
+                               sequence = getCommentString(fastaFile);
+                               
+                               if (fastaFile) {  
+                                       fastaFile >> name;  
+                                       name = name.substr(1);  
+                               }else { 
+                                       name = "";
+                                       break;
+                               }
+                       }
+                       
+                       //read info after sequence name
+                       while (!fastaFile.eof())        {       
+                char c = fastaFile.get(); 
+                if (c == 10 || c == 13 || c == -1){  break;    }
+                extraInfo += c;
+            } 
+                       
+                       int numAmbig = 0;
+                       sequence = getSequenceString(fastaFile, numAmbig);
+                       
+                       setAligned(sequence);   
+                       //setUnaligned removes any gap characters for us                                                
+                       setUnaligned(sequence); 
+                       
+                       if ((numAmbig / (float) numBases) > 0.25) { m->mothurOut("[WARNING]: We found more than 25% of the bases in sequence " + name + " to be ambiguous. Mothur is not setup to process protein sequences."); m->mothurOutEndLine(); }
+               }
+        
+       }
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "Sequence");
+               exit(1);
+       }                                                       
+}
+//********************************************************************************************************************
+//this function will jump over commented out sequences, but if the last sequence in a file is commented out it makes a blank seq
+Sequence::Sequence(ifstream& fastaFile, string JustUnaligned){
+       try {
+               m = MothurOut::getInstance();
+               initialize();
+               name = getSequenceName(fastaFile);
+               
+               if (!m->control_pressed) { 
+                       string sequence;
+                       
+                       //read comments
+                       while ((name[0] == '#') && fastaFile) { 
+                               while (!fastaFile.eof())        {       char c = fastaFile.get(); if (c == 10 || c == 13){      break;  }       } // get rest of line if there's any crap there
+                               sequence = getCommentString(fastaFile);
+                               
+                               if (fastaFile) {  
+                                       fastaFile >> name;  
+                                       name = name.substr(1);  
+                               }else { 
+                                       name = "";
+                                       break;
+                               }
+                       }
+                       
+                       //read real sequence
+                       while (!fastaFile.eof())        {       char c = fastaFile.get(); if (c == 10 || c == 13){       break; }       } // get rest of line if there's any crap there
+                       
+                       int numAmbig = 0;
+                       sequence = getSequenceString(fastaFile, numAmbig);
+                       
+                       //setUnaligned removes any gap characters for us                                                
+                       setUnaligned(sequence); 
+                       
+                       if ((numAmbig / (float) numBases) > 0.25) { m->mothurOut("[WARNING]: We found more than 25% of the bases in sequence " + name + " to be ambiguous. Mothur is not setup to process protein sequences."); m->mothurOutEndLine(); }
+                       
+               }
+               
+       }
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "Sequence");
+               exit(1);
+       }                                                       
+}
+//********************************************************************************************************************
+string Sequence::getSequenceName(ifstream& fastaFile) {
+       try {
+               string name = "";
+               
+        fastaFile >> name;
+               
+               if (name.length() != 0) { 
+            
+                       name = name.substr(1); 
+            
+            m->checkName(name);
+            
+        }else{ m->mothurOut("Error in reading your fastafile, at position " + toString(fastaFile.tellg()) + ". Blank name."); m->mothurOutEndLine(); m->control_pressed = true;  }
+        
+               return name;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "getSequenceName");
+               exit(1);
+       }
+}
+//********************************************************************************************************************
+string Sequence::getSequenceName(istringstream& fastaFile) {
+       try {
+               string name = "";
+               
+        fastaFile >> name;
+               
+               if (name.length() != 0) { 
+            
+                       name = name.substr(1); 
+            
+            m->checkName(name);
+            
+        }else{ m->mothurOut("Error in reading your fastafile, at position " + toString(fastaFile.tellg()) + ". Blank name."); m->mothurOutEndLine(); m->control_pressed = true;  }
+        
+               return name;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "getSequenceName");
+               exit(1);
+       }
+}
+//********************************************************************************************************************
+string Sequence::getSequenceString(ifstream& fastaFile, int& numAmbig) {
+       try {
+               char letter;
+               string sequence = "";   
+               numAmbig = 0;
+               
+               while(fastaFile){
+                       letter= fastaFile.get();
+                       if(letter == '>'){
+                               fastaFile.putback(letter);
+                               break;
+                       }else if (letter == ' ') {;}
+                       else if(isprint(letter)){
+                               letter = toupper(letter);
+                               if(letter == 'U'){letter = 'T';}
+                               if(letter != '.' && letter != '-' && letter != 'A' && letter != 'T' && letter != 'G'  && letter != 'C' && letter != 'N'){
+                                       letter = 'N';
+                                       numAmbig++;
+                               }
+                               sequence += letter;
+                       }
+               }
+               
+               return sequence;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "getSequenceString");
+               exit(1);
+       }
+}
+//********************************************************************************************************************
+//comment can contain '>' so we need to account for that
+string Sequence::getCommentString(ifstream& fastaFile) {
+       try {
+               char letter;
+               string sequence = "";
+               
+               while(fastaFile){
+                       letter=fastaFile.get();
+                       if((letter == '\r') || (letter == '\n')){  
+                               m->gobble(fastaFile);  //in case its a \r\n situation
+                               break;
+                       }
+               }
+               
+               return sequence;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "getCommentString");
+               exit(1);
+       }
+}
+//********************************************************************************************************************
+string Sequence::getSequenceString(istringstream& fastaFile, int& numAmbig) {
+       try {
+               char letter;
+               string sequence = "";
+               numAmbig = 0;
+               
+               while(!fastaFile.eof()){
+                       letter= fastaFile.get();
        
-       while(fastaFile){
-               letter= fastaFile.get();
-               if(letter == '>'){
-                       fastaFile.putback(letter);
-                       break;
+                       if(letter == '>'){
+                               fastaFile.putback(letter);
+                               break;
+                       }else if (letter == ' ') {;}
+                       else if(isprint(letter)){
+                               letter = toupper(letter);
+                               if(letter == 'U'){letter = 'T';}
+                               if(letter != '.' && letter != '-' && letter != 'A' && letter != 'T' && letter != 'G'  && letter != 'C' && letter != 'N'){
+                                       letter = 'N';
+                                       numAmbig++;
+                               }
+                               sequence += letter;
+                       }
                }
-               else if(isprint(letter)){
-                       letter = toupper(letter);
-                       if(letter == 'U'){letter = 'T';}
-                       sequence += letter;
+               
+               return sequence;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "getSequenceString");
+               exit(1);
+       }
+}
+//********************************************************************************************************************
+//comment can contain '>' so we need to account for that
+string Sequence::getCommentString(istringstream& fastaFile) {
+       try {
+               char letter;
+               string sequence = "";
+               
+               while(fastaFile){
+                       letter=fastaFile.get();
+                       if((letter == '\r') || (letter == '\n')){  
+                               m->gobble(fastaFile);  //in case its a \r\n situation
+                               break;
+                       }
                }
                
+               return sequence;
        }
-
-       if(sequence.find_first_of('-') != string::npos){        //      if there are any gaps in the sequence, assume that it is
-               setAligned(sequence);                                                   //      an alignment file
+       catch(exception& e) {
+               m->errorOut(e, "Sequence", "getCommentString");
+               exit(1);
        }
-       setUnaligned(sequence);                                                         //      also set the unaligned sequence file
 }
-
 //********************************************************************************************************************
 
-string Sequence::convert2ints() {
+void Sequence::initialize(){
        
-       if(unaligned == "")     {       /* need to throw an error */    }
+       name = "";
+       unaligned = "";
+       aligned = "";
+       pairwise = "";
        
-       string processed;
+       numBases = 0;
+       alignmentLength = 0;
+       isAligned = 0;
+       startPos = -1;
+       endPos = -1;
+       longHomoPolymer = -1;
+       ambigBases = -1;
        
-       for(int i=0;i<unaligned.length();i++) {
-               if(toupper(unaligned[i]) == 'A')                        {       processed += '0';       }
-               else if(toupper(unaligned[i]) == 'C')   {       processed += '1';       }
-               else if(toupper(unaligned[i]) == 'G')   {       processed += '2';       }
-               else if(toupper(unaligned[i]) == 'T')   {       processed += '3';       }
-               else if(toupper(unaligned[i]) == 'U')   {       processed += '3';       }
-               else                                                                    {       processed += '4';       }
-       }
-       return processed;
-}
+}      
 
 //********************************************************************************************************************
 
@@ -85,7 +461,7 @@ void Sequence::setName(string seqName) {
 
 void Sequence::setUnaligned(string sequence){
        
-       if(sequence.find_first_of('-') != string::npos) {
+       if(sequence.find_first_of('.') != string::npos || sequence.find_first_of('-') != string::npos) {
                string temp = "";
                for(int j=0;j<sequence.length();j++) {
                        if(isalpha(sequence[j]))        {       temp += sequence[j];    }
@@ -95,13 +471,38 @@ void Sequence::setUnaligned(string sequence){
        else {
                unaligned = sequence;
        }
+       numBases = unaligned.length();
        
 }
 
 //********************************************************************************************************************
 
 void Sequence::setAligned(string sequence){
+       
+       //if the alignment starts or ends with a gap, replace it with a period to indicate missing data
        aligned = sequence;
+       alignmentLength = aligned.length();
+       setUnaligned(sequence); 
+
+       if(aligned[0] == '-'){
+               for(int i=0;i<alignmentLength;i++){
+                       if(aligned[i] == '-'){
+                               aligned[i] = '.';
+                       }
+                       else{
+                               break;
+                       }
+               }
+               for(int i=alignmentLength-1;i>=0;i--){
+                       if(aligned[i] == '-'){
+                               aligned[i] = '.';
+                       }
+                       else{
+                               break;
+                       }
+               }
+       }
+       isAligned = 1;  
 }
 
 //********************************************************************************************************************
@@ -112,6 +513,25 @@ void Sequence::setPairwise(string sequence){
 
 //********************************************************************************************************************
 
+string Sequence::convert2ints() {
+       
+       if(unaligned == "")     {       /* need to throw an error */    }
+       
+       string processed;
+       
+       for(int i=0;i<unaligned.length();i++) {
+               if(toupper(unaligned[i]) == 'A')                {       processed += '0';       }
+               else if(toupper(unaligned[i]) == 'C')   {       processed += '1';       }
+               else if(toupper(unaligned[i]) == 'G')   {       processed += '2';       }
+               else if(toupper(unaligned[i]) == 'T')   {       processed += '3';       }
+               else if(toupper(unaligned[i]) == 'U')   {       processed += '3';       }
+               else                                                                    {       processed += '4';       }
+       }
+       return processed;
+}
+
+//********************************************************************************************************************
+
 string Sequence::getName(){
        return name;
 }
@@ -119,9 +539,17 @@ string Sequence::getName(){
 //********************************************************************************************************************
 
 string Sequence::getAligned(){
-       return aligned;
+       if(isAligned == 0)      { return unaligned; }
+       else                            {  return aligned;  }
+}
+
+//********************************************************************************************************************
+
+string Sequence::getInlineSeq(){
+       return name + '\t' + aligned;   
 }
 
+
 //********************************************************************************************************************
 
 string Sequence::getPairwise(){
@@ -136,34 +564,210 @@ string Sequence::getUnaligned(){
 
 //********************************************************************************************************************
 
-int Sequence::getLength(){
-       if(unaligned.length() > aligned.length())
-               return unaligned.length();
-       return aligned.length();
+int Sequence::getNumBases(){
+       return numBases;
+}
+//********************************************************************************************************************
+
+int Sequence::getNumNs(){
+    int numNs = 0;
+       for (int i = 0; i < unaligned.length(); i++) {
+        if(toupper(unaligned[i]) == 'N') { numNs++; }
+    }
+    return numNs;
 }
 
 //********************************************************************************************************************
 
 void Sequence::printSequence(ostream& out){
-       string toPrint = unaligned;
-       if(aligned.length() > unaligned.length())
-               toPrint = aligned;
-       out << ">" << name << "\n" << toPrint << "\n";
+
+       out << ">" << name << endl;
+       if(isAligned){
+               out << aligned << endl;
+       }
+       else{
+               out << unaligned << endl;
+       }
 }
 
 //********************************************************************************************************************
 
-int Sequence::getUnalignLength(){
-       return unaligned.length();
+int Sequence::getAlignLength(){
+       return alignmentLength;
 }
 
 //********************************************************************************************************************
 
-int Sequence::getAlignLength(){
-       return aligned.length();
+int Sequence::getAmbigBases(){
+       if(ambigBases == -1){
+               ambigBases = 0;
+               for(int j=0;j<numBases;j++){
+                       if(unaligned[j] != 'A' && unaligned[j] != 'T' && unaligned[j] != 'G' && unaligned[j] != 'C'){
+                               ambigBases++;
+                       }
+               }
+       }       
+       
+       return ambigBases;
+}
+
+//********************************************************************************************************************
+
+void Sequence::removeAmbigBases(){
+       
+       for(int j=0;j<alignmentLength;j++){
+               if(aligned[j] != 'A' && aligned[j] != 'T' && aligned[j] != 'G' && aligned[j] != 'C'){
+                       aligned[j] = '-';
+               }
+       }
+       setUnaligned(aligned);
+}
+       
+//********************************************************************************************************************
+
+int Sequence::getLongHomoPolymer(){
+       if(longHomoPolymer == -1){
+               longHomoPolymer = 1;
+               int homoPolymer = 1;
+               for(int j=1;j<numBases;j++){
+                       if(unaligned[j] == unaligned[j-1]){
+                               homoPolymer++;
+                       }
+                       else{
+                               if(homoPolymer > longHomoPolymer){      longHomoPolymer = homoPolymer;  }
+                               homoPolymer = 1;
+                       }
+               }
+               if(homoPolymer > longHomoPolymer){      longHomoPolymer = homoPolymer;  }
+       }
+       return longHomoPolymer;
+}
+
+//********************************************************************************************************************
+
+int Sequence::getStartPos(){
+       if(startPos == -1){
+               for(int j = 0; j < alignmentLength; j++) {
+                       if((aligned[j] != '.')&&(aligned[j] != '-')){
+                               startPos = j + 1;
+                               break;
+                       }
+               }
+       }
+       if(isAligned == 0){     startPos = 1;   }
+
+       return startPos;
+}
+
+//********************************************************************************************************************
+
+void Sequence::padToPos(int start){
+
+       for(int j = startPos-1; j < start-1; j++) {
+               aligned[j] = '.';
+       }
+       startPos = start;
+
+}
+//********************************************************************************************************************
+
+int Sequence::filterToPos(int start){
+    
+    if (start > aligned.length()) { start = aligned.length(); m->mothurOut("[ERROR]: start to large.\n"); }
+    
+       for(int j = 0; j < start; j++) {
+               aligned[j] = '.';
+       }
+       
+    //things like ......----------AT become ................AT
+    for(int j = start; j < aligned.length(); j++) {
+        if (isalpha(aligned[j])) { break; }
+        else { aligned[j] = '.'; }
+    }
+    setUnaligned(aligned);
+    
+    return 0;
+    
+}
+//********************************************************************************************************************
+
+int Sequence::filterFromPos(int end){
+    
+    if (end > aligned.length()) { end = aligned.length(); m->mothurOut("[ERROR]: end to large.\n"); }
+    
+       for(int j = end; j < aligned.length(); j++) {
+               aligned[j] = '.';
+       }
+       
+    for(int j = aligned.length()-1; j < 0; j--) {
+        if (isalpha(aligned[j])) { break; }
+        else { aligned[j] = '.'; }
+    }
+    
+    setUnaligned(aligned);
+    
+    return 0;
+}
+//********************************************************************************************************************
+
+int Sequence::getEndPos(){
+       if(endPos == -1){
+               for(int j=alignmentLength-1;j>=0;j--){
+                       if((aligned[j] != '.')&&(aligned[j] != '-')){
+                               endPos = j + 1;
+                               break;
+                       }
+               }
+       }
+       if(isAligned == 0){     endPos = numBases;      }
+       
+       return endPos;
+}
+
+//********************************************************************************************************************
+
+void Sequence::padFromPos(int end){
+       //cout << end << '\t' << endPos << endl;
+       for(int j = end; j < endPos; j++) {
+               aligned[j] = '.';
+       }
+       endPos = end;
+       
 }
 
 //********************************************************************************************************************
 
+bool Sequence::getIsAligned(){
+       return isAligned;
+}
+//********************************************************************************************************************
+
+void Sequence::reverseComplement(){
+
+       string temp;
+       for(int i=numBases-1;i>=0;i--){
+               if(unaligned[i] == 'A')         {       temp += 'T';    }
+               else if(unaligned[i] == 'T'){   temp += 'A';    }
+               else if(unaligned[i] == 'G'){   temp += 'C';    }
+               else if(unaligned[i] == 'C'){   temp += 'G';    }
+               else                                            {       temp += 'N';    }
+       }
+       unaligned = temp;
+       aligned = temp;
+       
+}
+
+//********************************************************************************************************************
 
+void Sequence::trim(int length){
+       
+       if(numBases > length){
+               unaligned = unaligned.substr(0,length);
+               numBases = length;
+        aligned = "";
+        isAligned = 0;
+       }
+       
+}
 
+///**************************************************************************************************/