| Re: ENVI_INIT_TILE tiling problem [message #66070 is a reply to message #65628] |
Fri, 10 April 2009 03:07  |
nitinkgeo
Messages: 2
Registered: April 2009
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Junior Member |
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On Mar 14, 11:11 pm, "Jeff N." <jeffnettles4...@gmail.com> wrote:
> On Mar 14, 9:10 am, a.l.j.f...@gmail.com wrote:
>
>
>
>> I'm using interpolation to fill some holes in elevation data. Because
>> of memory limitations I'm trying Envi's tiling capability for the
>> first time! My code compiles OK, but when I run it (I have it embedded
>> in an Envi User Function) I get this error in my IDL window:
>
>> % Variable is undefined: F_NS.
>> % Execution halted at: ENVI_INIT_TILE
>
>> Here is the offending section of code. I have no idea where F_NS is
>> (I'd understand if it was simply NS, i.e. number of samples) and
>> despite searching I cannot deduce what is wrong or how to fix it. Does
>> anyone have any ideas?? BTW, the elevation data has a single band and
>> my_pos is set to [0].
>
>> tile_id=ENVI_INIT_TILE(output_DSM, my_pos)
>> FOR i=0, num_tiles-1 DO BEGIN
>> tile_data_interp=ENVI_GET_TILE(tile_id, i)
>
>> ;Processing within Tiling
>
>> tile_data_interp = REPLICATE(0.0, dims[2], dims[4])
>> tile_data_interp = TRI_SURF(output_DSM, /REGULAR, XGRID=[1, 1],
>> YGRID=[1, 1], NX=dims[2], NY=dims[4])
>
>> ; Close Tiling
>
>> ENDFOR
>> ENVI_TILE_DONE, tile_id
>
> I would check to make sure that the first argument to ENVI_INIT_TILE
> is supplied correctly. You should be giving it the FID of the input
> file, but the "output_DSM" doesn't sound like an input FID to me. In
> fact, since you use it as an argument to TRI_SURF it looks like
> output_DSM has to be an actual data array. So i think you're giving
> ENVI_INIT_TILE an incorrect argument.
Hi Jeff this is Nitin, I am a Research Scholar, and i am also facing
same kind of problem during creation of DEM from geoeye pan data(I am
using ENVI 4.6). When i run the process in lower level(5th level),
process runs smoothly and result come out. but when i run the process
in Maximum level(8th) at the end of the process a error appears as
"Array dimension is must be greater than 0"
will you suggest me, why this kind of error is occurring, is it due to
heavy data size.
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