regridding and memory

[Benyang Tang <btang@xxxxxxxxxxxxxxxxxxxx>]

I don't know how to make sense of the following Ferret section.
 
I did 
list topo1[x=100,y=100]
three times. Every time the value changed; no calculation was performed on the variable.

The first list was 32.39, which was incorrect.
The second list was 4715, after I listed the variable topo1 in a range.
The third list was back to 32.39, after memory resizing.

Any suggestions? Thanks.

Benyang Tang

========================================
$ ferret -gif
        NOAA/PMEL TMAP
        FERRET v5.40  
        Linux 2.4.3-12smp - 02/19/02
        28-May-02 17:07     
yes? define axis/y=1:224:1/unit=meters oldY
yes? define axis/x=1:360:1/unit=meters oldX
yes? define grid/y=oldY/x=oldX oldG
yes? 
yes? FILE/VAR=topo/GRID=oldG/FORMAT=stream/type=r4/swap  "topog.dat"
yes? 
yes? define axis/y=1:224:2/unit=meters newY
yes? define axis/x=1:360:2/unit=meters newX
yes? define grid/y=newY/x=newX newG
yes? 
yes? define var topo1=topo[g=newG@ave]
yes? 
yes? list topo1[x=100,y=100]
             VARIABLE : TOPO[G=NEWG@AVE]
             FILENAME : topog.dat
             X (METERS): 99
             Y (METERS): 99
          32.39
yes? 
yes? list topo1[x=98:102,y=98:102]
             VARIABLE : TOPO[G=NEWG@AVE]
             FILENAME : topog.dat
             SUBSET   : 2 by 2 points (X (METERS)-Y (METERS))
               99     101   
               50     51
 99    / 50:  4715.  2782.
 101   / 51:    24.     6.
yes? 
yes? list topo1[x=100,y=100]
             VARIABLE : TOPO[G=NEWG@AVE]
             FILENAME : topog.dat
             X (METERS): 99
             Y (METERS): 99
          4715.
yes? set memory/size=100
 Cached data cleared from memory
yes? 
yes? list topo1[x=100,y=100]
             VARIABLE : TOPO[G=NEWG@AVE]
             FILENAME : topog.dat
             X (METERS): 99
             Y (METERS): 99
          32.39