diff --git a/modules/gmt/modgmt_internals.cpp b/modules/gmt/modgmt_internals.cpp
index 3cbe5b5..732e887 100644
--- a/modules/gmt/modgmt_internals.cpp
+++ b/modules/gmt/modgmt_internals.cpp
@@ -98,7 +98,8 @@ bool ProjectionRealSize(struct gmt_projection& p, double height)
  std::string wh;
  double w,h;
  double sw=p.width;
- size_t pos;
+ WordList wl;
+ WordList::const_iterator cw;
 
  gmtapi=GMT_Create_Session("ProjectionRealSize",2,GMTMODE,0);
  if(0==gmtapi) return false;
@@ -108,12 +109,12 @@ bool ProjectionRealSize(struct gmt_projection& p, double height)
  GMT_Destroy_Session(gmtapi);
  if(0!=ret) return false;
 
- pos=wh.find('\n');
- if(std::string::npos!=pos) wh.erase(pos);
- pos=wh.find_first_of(" \t",0,2);
- if(std::string::npos==pos) return false;
- if(!str2double(std::string(wh.c_str(),wh.c_str()+pos),&w)) return false;
- if(!str2double(wh.substr(pos+1),&h)) return false;
+ wl=Split(wh," \t\n");
+ if(2!=wl.size()) return false;
+ cw=wl.begin();
+ if(!str2double(*cw,&w)) return false;
+ cw++;
+ if(!str2double(*cw,&h)) return false;
  if(height>0.0)
  {
   p.width=height/h;
diff --git a/modules/gmt/modgmt_structs.h b/modules/gmt/modgmt_structs.h
index c232646..e163488 100644
--- a/modules/gmt/modgmt_structs.h
+++ b/modules/gmt/modgmt_structs.h
@@ -33,37 +33,36 @@ struct gmt_coord
  }
  bool Convert(const std::string& str)
  {
-  size_t bpos=0,pos=str.find(':');
-  if(std::string::npos==pos)
+  WordList wl;
+  WordList::const_iterator cw;
+  wl=Split(str,":",true);
+  if(1==wl.size()) // No dd:mm
   {
    isdeg=false;
    return str2double(str,&r);
   }
+  if(0==wl.size() || wl.size()>3) return false;
 
   isdeg=true;
   int64_t res;
 
   // degrees
-  if(! str2int(std::string(str.c_str(),str.c_str()+pos),&res) ) return false;
+  cw=wl.begin();
+  if(!str2int(*cw,&res)) return false;
   if(res>360 || res<-360) res%=360;
-  sign=(std::string::npos==str.find('-'));
+  sign=(std::string::npos==cw->find('-'));
   d=static_cast<uint16_t>(sign?res:-res);
   // minutes
-  bpos=pos+1;
-  pos=str.find(':',bpos);
-  if(std::string::npos==pos)
-  {
-   if(!str2int(str.substr(bpos),&res)) return false;
-   if(res<0 || res>=60) return false;
-   m=static_cast<uint8_t>(res);
-   s=0;
-   return true;
-  }
-  if(! str2int(std::string(str.c_str()+bpos,str.c_str()+pos),&res) ) return false;
+  cw++;
+  if(!str2int(*cw,&res)) return false;
   if(res<0 || res>=60) return false;
   m=static_cast<uint8_t>(res);
+  s=0;
+
   // seconds
-  if(! str2double(str.substr(pos+1),&s) ) return false;
+  cw++;
+  if(wl.end()==cw) return true; // No seconds
+  if(!str2double(*cw,&s) ) return false;
   if(s<0.0 || s>=60.0) return false;
   return true;
  }