1 files changed, 22 insertions, 0 deletions
diff --git a/src/bltGrElem.C b/src/bltGrElem.C
index 6414c4a..7754b3e 100644
--- a/src/bltGrElem.C
+++ b/src/bltGrElem.C
@@ -27,6 +27,7 @@
  *	WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
+#include <math.h>
 #include <float.h>
 #include <stdlib.h>
 
@@ -37,6 +38,8 @@
 
 using namespace Blt;
 
+// Class ElemValues
+
 ElemValues::ElemValues()
 {
   type = SOURCE_VALUES;
@@ -54,6 +57,25 @@ ElemValues::~ElemValues()
     delete [] values;
 }
 
+void ElemValues::findRange()
+{
+  if (nValues<1 || !values)
+    return;
+
+  min = DBL_MAX;
+  max = -DBL_MAX;
+  for (int ii=0; ii<nValues; ii++) {
+    if (isfinite(values[ii])) {
+      if (values[ii] < min)
+	min = values[ii];
+      if (values[ii] > max)
+	max = values[ii];
+    }
+  }
+}
+
+// Class Element
+
 Element::Element(Graph* graphPtr, const char* name, Tcl_HashEntry* hPtr)
 {
   graphPtr_ = graphPtr;