[ferret_users] vertical cross section along a ship track

[aleksi.nummelin@xxxxxxxxxxxxxxx]

HI

Here is some more info about my problem (see my previous 
message on the bottom):

whole error message:

**ERROR: dimensions improperly specified: 9999999 words 
were requested.
 *** NOTE: Check for unspecified limits on an ABSTRACT 
axis
 *** NOTE: Use the SHOW GRID command to see the axes

I tried to specify abstract axis but obviously it didn't 
work .  I can also plot the ship track,
so I guess the problem is not  track itself.

One of the tracks I tried to use:

yes? LET/QUIET xlon1 = 22
yes? LET/QUIET xlon2 = 24
yes? LET/QUIET xlon3 = 28
yes? LET/QUIET ylat1 = 59.5
yes? LET/QUIET ylat2 = 59.7
yes? LET/QUIET ylat3 = 60.2
yes? LET/QUIET XLEG1 = xlon1 + (L-1)*(xlon2-xlon1)
yes? LET/QUIET XLEG2 = xlon2 + (L-1)*(xlon3-xlon2)/3
yes? LET/QUIET YLEG1 = ylat1 + (L-1)*(xlon2-xlon1)
yes? LET/QUIET YLEG1 = ylat1 + (L-1)*(ylat2-ylat1)
yes? LET/QUIET YLEG2 = ylat2 + (L-1)*(ylat3-ylat2)/3
yes? LET/QUIET XTRACK = IF L LE 2 THEN XLEG1 ELSE XLEG2
yes? LET/QUIET YTRACK = IF L LE 2 THEN YLEG1 ELSE YLEG2

I thought the problem might be the variable L so I tried I 
and J and even A (wich was my own variable),
but none of them worked.

My PREVIOUS MESSAGE:

Hi!

I have tried to make a vertical profile along a ship 
track, but I get just this:

ERROR: dimensions improperly specified: 9999999 words were 
requested.

I have used script

LET slantV = samplexy(V,xtrack,ytrack)
FILL/LEVELS=(-1,1,0.1)/VLIMITS=0:100 slantV

V is variable (meridional velocity). According to users 
guide this should work,
and it does when I make a profile along a simple line,
so do you have any ideas what I'm doing wrong when trying 
to plot along a ship track?

Thanks (for previous answers too)!

 - ALEKSI NUMMELIN -