AW: [GRASS-user] v.in.ascii error: G_realloc

[Praktikant/in2 ARP]

>-----Ursprüngliche Nachricht-----
>Von: Maciej Sieczka [mailto:tutey at o2.pl]
>Gesendet am: Mittwoch, 16. August 2006 16:00
>An: Praktikant/in2 ARP
>Cc: 'grassuser at grass.itc.it'
>Betreff: Re: [GRASS-user] v.in.ascii error: G_realloc
>
>I can't help you with v.surf.rst then. But maybe you could try the
>nnbathy tool from nn library (if natural neighbor interpolation suits
>your needs). It should let you interpolate a huge raster, and requires
>only simple x,y,z ASCII input.
>
>1. download nn.tar.gz from http://www.marine.csiro.au/~sakov/
>2. tar xzvf nn.tar.gz
>3. cd nn
>4. ./configure
>5. make
>6. gcc -o nnbathy nnbathy.c -g -O2 -Wall -pedantic -I. -DNN_SERIAL
>libnn.a -lm
>7. chmod u+x ./nnbathy
>
>Copy the nnbathy executable to a directory listed in your PATH.
>
>Run it as:
>
>nnbathy -W 0 -P alg=nn -n "$cols"x"$rows" -x "$west" "$east" -y "$north"
>"$south" -i your_huge_xyz_input > interpolated_xyz_output
>
>where cols, rows, east etc. are your region settings obtained with
>g.region -g.
>
>Now import interpolated_xyz_output directly as a raster with r.in.xyz or
>see lines 155-165 of my r.surf.nnbathy (on Grass WIKI) for how to
>transform it into Grass ascii raster to be imported with r.in.ascii.
>
>Refer to nnbathy help screen for details.
>
>Let me know if it worked.
>
>Maciek

Thanks a lot for your help Maciek.

I`ve done everything as described. But when I run

nnbathy -W 0 -P alg=nn -n 300x300 -x 605450 606050 -y 232550 231950 -i dtm >
interpolated_xyz_output

I get an error: Speicherzugriffsfehler (I think its something like
segmentation fault in English)

Maybe there is an error in my input line?

I also tried r.in.xyz and r.surf.nnbathy.
r.in.xyz is working fine. But when I use the created raster I get the error:

r.stats:  100%

nnbathy IN ACTION - MAY TAKE SOME TIME

PLEASE STAND BY UNTIL 'ALL DONE' IS PRINTED

CONVERTING nnbathy OUTPUT TO GRASS RASTER

ERROR: Data conversion failed at row 1, col 1

ALL DONE

Best regards

Michael