$FreeBSD$

--- source/graph.c.orig	Wed Jul 24 00:01:06 2002
+++ source/graph.c	Wed Jul 24 00:01:07 2002
@@ -608,7 +608,7 @@
 void getDrawingScale()
 {
   float xoff, yoff;
-  float scl;
+  float iscl;	/* inverse scale */
   int width, height;
   int ww;
   int nx, ny, id;
@@ -630,25 +630,27 @@
   width = width / nx;
   height = height / ny;
 
-  if(state > HAVE_NOTHING){
-    scl  = 1./max(xmax-xmin,ymax-ymin);
-    xoff = -scl*(xmin+.5*(xmax-xmin)-.5/scl);
-    yoff = -scl*(ymin+.5*(ymax-ymin)-.5/scl);
-
-    xoff =  - xmin*scl*.85;
-    yoff =  - ymin*scl*.85;
-
-    ww = min(width, height);
-    Xscl  = (int) ((float)ww * 0.85 * scl);
-    Xxoff = (int) ww * xoff ;
-    Xyoff = (int) ww * yoff;
-    Xxoff += (int) (width -  ( Xscl*xmax +Xxoff))/2 + (id+nx-1)%nx *width;
-    Xyoff += (int) (height - ( Xscl*ymax +Xyoff))/2 + (int)(id/(nx+.5)) *height;
-  }
+  iscl  = max(xmax-xmin,ymax-ymin);
+  if (iscl != 0.0) {
+   if(state > HAVE_NOTHING) {
+/*  These are recalculated ??
+    xoff = .5-(xmin+.5*(xmax-xmin))/iscl;
+    yoff = .5-(ymin+.5*(ymax-ymin))/iscl;
+*/
+      xoff =  - xmin*.85/iscl;
+      yoff =  - ymin*.85/iscl;
+      ww = min(width, height);
+      Xscl  = (int) ((float)ww * 0.85 / iscl);
+      Xxoff = (int) ww * xoff ;
+      Xyoff = (int) ww * yoff;
+      Xxoff += (int) (width -  ( Xscl*xmax +Xxoff))/2 + (id+nx-1)%nx *width;
+      Xyoff += (int) (height - ( Xscl*ymax +Xyoff))/2 + (int)(id/(nx+.5)) *height;
+   }
 
   SetDrawArea(drawWindow);
   if(device == PS)
     psGetScale();
+  }
 }
 
 void getBoundaryScale(Widget w, void *data)