Problem with r.cost?

[Rick Thompson]

Hello Grassers,
  Does anyone know why r.cost is behaving so much differently in 4.1 than
in 4.0. The manual entry in 4.0 makes sense, but after using 4.1 r.cost,
I get this result (from the Spearfish data set):


r.cost in=slope.sm ou=slope.sm.cost coor=594455,4915055


slope.sm

north: 4915190
south: 4914890
east: 594590
west: 594290
rows: 10
cols: 10
 30  30  26  25  27  25  22  12   9  22 
 32  31  26  23  22  17  10  11  21  30 
 33  30  25  19  14   6  14  22  29  35 
 30  27  22  13   3  12  21  27  33  36 
 25  25  15   5  13  22  26  28  32  34 
 23  23   9  15  22  27  27  27  30  31 
 23  20   7  18  22  26  25  26  28  29 
 27  23   5  17  20  22  21  23  24  24 
 29  27  13  13  21  24  23  21  20  22 
 28  28  23   8  16  24  27  28  26  26 


slope.sm.cost

135 105  87  76  67  57  51  51  60  75 
123  92  65  52  44  36  35  46  62  87 
105  79  53  33  26  24  34  52  74 101 
 92  63  42  26  18  17  30  54  84 119 
 78  53  33  23  18   0  24  51  81 114 
 72  49  33  33  31  25  35  61  90 120 
 75  54  41  50  53  51  61  72  99 128 
 86  61  47  58  74  75  84  95 107 131 
 98  70  56  60  77  98 106 113 125 140 
109  85  74  70  80 100 126 138 147 158 

Any help is appreciated.
------------------------------------------------------------------------
Rick Thompson-   Research Assistant           E-mail: rick at cast.uark.edu
Center for Advanced Spatial Technologies      Telephone: (501) 575-5736
Ozark Hall Rm. 12                             Fax: 575-3846 
University of Arkansas              
Fayetteville, AR 72701