[GRASS5] 5.7.1

Markus Neteler neteler at itc.it
Sun Dec 5 09:56:24 EST 2004


Helena,

I just made a test with lidaratm2.txt.gz from
http://mpa.itc.it/grasstutor/data_menu2nd.phtml

wc -l lidaratm2.txt
1158424 lidaratm2.txt

(-> 1.1 Mio points)

cat lidaratm2.txt | time v.in.ascii -z out=mypoints zcol=3 catcol=0 fs=',' columns='x double, y double, z double'

   97.05 user
   7.50  system
1:52.08  elapsed
...
0 swaps       <--- 750MB RAM


v.info mypoints
...
 |   Number of points:       1158424         Number of areas:      0          |
 |   Number of lines:        0               Number of islands:    0          |
 |   Number of boundaries:   0               Number of faces:      0          |
 |   Number of centroids:    0               Number of kernels:    0          |
 |                                                                            |
 |   Map is 3D:              1                                                |
 |   Number of dblinks:      0                                                |
 |                                                                            |
 |   Projection: Längen- und Breitengrad (zone 0)                             |
 |            N: 35.969        S: 35.950                                      |
 |            E: -75.621        W: -75.640                                    |
 |            B: -1.937        T: 200.935

cat /proc/cpuinfo |grep MHz
cpu MHz         : 2533.639

It's acceptable (since you have to do it one time only).

Did you try
 s.out.ascii file | v.in.ascii ... ?

Markus




More information about the grass-dev mailing list