diagonal section and integration handling difficulties

[Robert Landsberger <landsberger@xxxxxxxxxxxxxxxxxx>]

Dear Ferreters,

actually working with a oceanmodel calculating stream intensitys it 
occured to us to check the produced data by integrating the stream 
components u (longitude direction) and v
(latitude direction) along any diagonal line in the datafield.

First question concerning is:
Is there a standard way of gaining the requested output? Or has there 
been any programfile published yet to help us in this task?

And second:
During our calculation we come to a situation similar to the one in the 
append lines.
We take the vertical section out of the original data file and reduce 
the data to a 2 dimensional field (as you may see the depth ist 
integrated already)
So all we need do to is to integrate the x-axis and we compute the 
directed stream of water. The question is why do we gain correct output 
for the integration with an existing y-axis and the wrong output for the 
integration along the x-axis for the integration without y-axis? For 
this is what occurs if we do not do a clear zonal or meridional section.

Any help is welcome

Robert Landsberger (ZMAW Hamburg/Germany)


Problem scratch:
name     title                                                   
I         J         K         L
TEST1    V[Y=77,Z=@DIN]                   1:252     1:1       ...       
1:12
      (Z=0:4868)
TEST2    V[Y=77@AVE,Z=@DIN]       1:252      ...        ...       1:12
      (Z=0:4868)
TESU1    TEST1[X=@DIN]/(1E6)             ...       1:1       ...       1:12
      (X=46W(-46):17E, Z=0:4868)
TESU2    TEST2[X=@DIN]/(1E6)             ...        ...        
...       1:12
      (X=46W(-46):17E, Z=0:4868)

yes? list/l=1 tesu1
            VARIABLE : TEST1[X=@DIN]/(1E6)
                       X=46W(-46):17E, Z=0:4868
            FILENAME : keks.cdf
            LATITUDE : 77N
            TIME     : 01-JUL-1992 14:54
        -1.205
yes? list/l=1 tesu2
            VARIABLE : TEST2[X=@DIN]/(1E6)
                       X=46W(-46):17E, Z=0:4868
            FILENAME : keks.cdf
            TIME     : 01-JUL-1992 14:54
        -5.348